A BUILDING STRUCTURE

Abstract

 The disclosure relates to a building structure (1), such as in industrial, office or car parking buildings, comprising an detachable assembly system (10) configured to detachably hold at least two concrete plates (20,30), which are arranged end to end, to each other to form at least part of a floor (2) of the building structure (1). The assembly system (10) comprises one or more separate connecting members (50) and connecting elements (60) and one or more separate fasteners (70,71), which separate connecting elements and fasteners are configured to be detachably fastened to the concrete plates to detachably support and hold each concrete plate in place in the building structure (1).

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a building structure. More specifically, the disclosure relates to a building structure as defined in the independent claim.

BACKGROUND ART

[0002] Demountable buildings exist on the market since many decades.

[0003] A known such solution for demountable buildings using metal structure combined with prefabricated concrete decks exists in this technical sector and is provided by CAR PARKS (NL, Chamber of Commerce 08090634), Park'Up Systems or Park-and-Play from France.

[0004] A problem with the solutions of the prior art is that transferred loads between the concrete deck or slab elements induce differential deformations and movements between the elements and may cause leakage issues and reduce durability of the erected building.

[0005] A problem with the solutions of the prior art is compatibility problems related to fabrication and erection tolerances when buildings are demounted and the elements are re-erected in a different location for another building, where the position in space is different.

[0006] A problem with the solutions of the prior art is that the building elements making up the building/building structure are damaged when demounted as those solutions do not allow simple dissociation of materials (building/building structure of metal/steel and concrete elements) without damaging the building elements.

[0007] A problem with the solutions of the prior art is that building elements, such as concrete deck plates are difficult to handle and transport as they comprise integral additional reinforcing beams.

[0008] There is thus a need for improved detachable building structures being fit for high level circular economy business concepts for demountable buildings.

SUMMARY OF THE INVENTION

[0009] It is an object of the present disclosure to mitigate, alleviate or eliminate one or more of the above-identified deficiencies and disadvantages in the prior art and solve at least the above-mentioned problem. According to a first aspect there is provided a building structure, such as in industrial, functional, office or car parking buildings, comprising at least two detachable horizontal support beams and an detachable assembly system configured to detachably support/hold at least one concrete plate, which is arranged on the horizontal support beams to form at least part of a floor of the building structure, each concrete plate comprising a first end, a second end, a third end, a fourth end, an underside and a top side forming the upper floor surface, wherein each concrete plate end of each concrete plate comprises one or more integrated connectors at the underside, and the assembly system comprises one or more separate connecting members and one or more separate fasteners, which separate connecting members and fasteners are configured to be detachably fastened to the integrated connectors of the concrete plate to detachably support and hold each concrete plate in place when lying with the first concrete plate end on a first horizontal support beam and lying with the second concrete plate end on a second horizontal support beam of the building structure, wherein the assembly system further comprises at least a first spacer element being arranged on the first horizontal support beam and at least a second spacer element being arranged on the second horizontal support beam, the spacer elements being configured to align with the joint between each concrete plate and the horizontal support beams and to correctly position each concrete plate in relation to the horizontal support beams when laid out on the horizontal support beams and detachably assembled to the horizontal support beams as the floor.

[0010] According to some embodiments, the detachable assembly system is configured to detachably support/hold at least two concrete plates, which are arranged end to end to each other and on the horizontal support beams to form at least part of the floor of the building structure, and the assembly system comprises one or more connecting elements and one or more separate fasteners, which separate connecting members and elements and fasteners are configured to be detachably fastened to the integrated connectors of the concrete plates to detachably support and hold each concrete plate in place when lying with the first concrete plate end on the first horizontal support beam and lying with the second concrete plate end on the second horizontal support beam, wherein the assembly system further comprises at least the first spacer element being arranged on the first horizontal support beam and at least the second spacer element being arranged on the second horizontal support beam, the spacer elements being configured to align with the joint between at least the two concrete plates and to correctly position each concrete plate in relation to the horizontal support beams, each other and one or more of other concrete plates when laid out on the horizontal support beams and detachably assembled together as the floor.

[0011] According to some embodiments, each integrated connector is embedded in each underside of each concrete plate at different positions at the concrete plate ends and with the same orientation for all integrated connectors of each concrete plate in parallel with one or two of the concrete plate ends.

[0012] According to some embodiments, each integrated connector is elongated and embedded in each underside of each concrete plate at different positions at the concrete plate ends and with the same orientation for all integrated connectors of each concrete plate in parallel with one or two of the concrete plate ends.

[0013] According to some embodiments, the first concrete plate end is arranged opposite and in parallel with the second concrete plate end and the third concrete plate end is arranged opposite and in parallel with the fourth concrete plate end, and the first and second concrete plate ends are arranged perpendicularly to the third and fourth concrete plate ends, wherein the integrated connectors of each concrete plate are arranged orientated in parallel with each other and in parallel with either the first and second concrete plate ends or the third and fourth concrete plate ends.

[0014] According to some embodiments, the first concrete plate end is arranged opposite and in parallel with the second concrete plate end and the third concrete plate end is arranged opposite and in parallel with the fourth concrete plate end, and the first and second concrete plate ends are arranged perpendicularly to the third and fourth concrete plate ends, wherein the integrated connectors of each concrete plate are elongated and arranged orientated in parallel with each other and in parallel with either the first and second concrete plate ends or the third and fourth concrete plate ends.

[0015] According to some embodiments, the building comprises at least one further or third horizontal support beam and at least one further concrete plate laid out with the first end on the first horizontal support beam or on the second horizontal support beam of the building structure and laid out with the second end on the second or the first horizontal support beam end to end with adjoining other concrete plates forming joints between the concrete plate ends, and the concrete plates comprises end/edge corners that thereby adjoin and form a Tor cross-shaped joint between two or four concrete plates that align with the first or second or other spacer elements having a T- or cross-shape.

[0016] According to some embodiments, each separate connecting member is a metal clamp with only one through hole configured to receive a fastener, which clamp is L-shaped and the through hole is made in one of the legs of the L-shape and extends in a direction being substantially parallel with or is parallel with the extension of the other leg of the L-shape.

[0017] According to some embodiments, each separate connecting member is configured to detachably clamp a concrete plate end to a horizontal support beam by means of its L-shape engaging the underside of the concrete plate end (and/or the integrated connector depending on its orientation) with one leg and engaging the horizontal support beam with the other leg after being thread onto a fastener by means of the through hole and after the nut of the fastener is thread onto the fastener and tightened.

[0018] According to some embodiments, each spacer element is fixedly attached to a detachable horizontal support beam at locations adapted to the dimensions of the concrete plate(s). This is to control the layout and detachable assembly of the concrete plate(s). According to some embodiments, each spacer element is fixedly attached to and distributed along a detachable horizontal support beam at locations adapted to the dimensions of the concrete plate(s). This is to control the layout and detachable assembly of the concrete plate(s) by guiding/centering the end(s) and/or corner(s) of each concrete plate and/or guiding/centering the end(s) and/or corner(s) of each concrete plate relative the end(s) and/or corner(s) of adjoining other concrete plates laid on the horizontal support beam(s).

[0019] According to some embodiments, the detachable assembly system comprises deformation bearing and/or wear protection layered between the concrete plate ends and the horizontal beams when the concrete plates are detachably assembled as parts of the floor.

[0020] According to some embodiments, each separate connecting element is a metal plate or a metal U-profile corresponding to a small part of a beam configured to extend over the concrete plate ends at a joint between two concrete plates and to extend over the joint itself.

[0021] According to some embodiments, each separate connecting element comprises at least two through holes, preferably between four to twenty through holes.

[0022] According to some embodiments, each through hole of the connecting element is configured to receive a fastener and is located in the connecting element to align at least one of the through holes with at least one integrated connector of one of the concrete plates and to align at least one other through hole with at least one integrated connector of another concrete plate to enable introducing the fasteners through the through holes and out below the connecting element to detachably fasten the connecting element to both concrete plates by threading on and tightening the nuts to the fasteners from below the connecting element to hold the concrete plates together end to end.

[0023] According to some embodiments, each through hole of the connecting element is elongated or oblong or a slit, and each through hole is orientated with its larger dimension in a direction being perpendicular to the extension of the integrated connectors of a concrete plate.

[0024] According to some embodiments, each concrete plate comprises at least two integrated connectors at each concrete plate end. According to some embodiments, each concrete plate comprises at least two integrated connectors at/on at least two of the concrete plate ends and at least four integrated connectors at each of the other two concrete plate ends.

[0025] The disclosed solution provides a totally demountable system without any risk damaging the construction elements in the so-called upcycling. This is possible due to a system of 100% reversible mechanical connections of the entities making up the building structure. The building structure and its detachable entities provides a demountable construction system in a sustainable way and ensures that proper transfer of forces and control of differential deformations between the construction elements and durability of joints between concrete plates, as due by the usage of the building. For example, in car parking buildings, when cars pass from one concrete plate to the next, the differential vertical deflection is limited between adjacent concrete plates by this building structure avoiding long term disorders, such as the degradation of the joint material or the ends/edges of the concrete plates, as the individual concrete plates are linked together as one homogeneous "supportive floor or flat beam" in itself after assembly. The building structure and its detachable entities provides an additional advantage by solving issues related to fabrication and erection tolerances of a demountable building structure as all geometrical imprecisions and positioning tolerances of the building structure and concrete plates need to be absorbed without jeopardizing any the functionality of the complete structure. A reason being that building elements, such as metal and/or steel elements and concrete elements both are not made with perfectly precise dimensions. Fabrication tolerances, temperature, erection tolerances and other factors play a role and influence the final exact geometrical dimensions of entities and of their exact location in space in a building and the building structure which is solved by providing entities cooperating together when detachably assembled and disassembled, which enable to position all entities including concrete plates and other detachable parts in the desired way by "absorbing" all usual tolerances, separately and independently from the fixation devices, such as connecting elements/members and fasteners in a non-destructive way. This also enables having joints between concrete plates that do not have to be supported by additional horizontal support beams, e.g. extending perpendicularly to the other horizontal support beams, being part of the building in itself or strengthening beams being an integral part of the concrete plates.

[0026] The disclosed solution provides at least the following advantages: a building structure that is detachably assembled or disassembled without structural composite effect by usage of a special tolerance adjustment by means of spacer element(s) and connecting member(s) and element(s) and fasteners for the positioning and fixation of the concrete plates; and dissociation of the positioning and the fixation functions of the concrete plates which are put down on top of, and detachably fixed to the horizontal beams of the building structure, and is configured for buildings with several floors and storeys.

[0027] The disclosed solution provides at least the following advantage: concrete plates of transportable size (respecting standard truck size) with integrated connectors.

[0028] The disclosed solution provides at least the following advantages: reversible connecting members/elements and fasteners enabling to have unsupported joints between concrete plates, which limit differential deflection of individual concrete plates and transfer the loads between the different parts/entities and building elements of the building structure, and ensure improved durability of the joints between concrete floor plates in terms of water tightness at the top side and upper face and fire resistance at the underside and lower face of the concrete plates.

[0029] The disclosed solution provides at least the following advantage: demounting of the parts or entities/elements making up the building structure without any damages (i.e. upcycling for circular economy value), and for clean dissociation of the materials being a mixture of parts made of concrete or metal, such as steel, or made of both concrete and metal (to enable cradle-to-cradle approach).

[0030] The disclosed solution provides at least the following advantages: replaceable joint tightening products in the form of separate connecting members/elements and fasteners as they are detachable and replaceable joint water sealants and/or fire protection products as they are easily assembled and disassembled by the thereby achieved repeatable detachability of the floor of the building structure and its joints.

[0031] The disclosed solution provides at least the following advantages: reversible connecting members and elements and fasteners; improved tolerances absorption by spacer elements being added as part of the horizontal support beam top flanges to receive and position the concrete plates correctly and safely and in a robust repeatable way; dissociation of positioning and fixation entities, such as the spacer elements and the connecting members/elements and fasteners, that enables a clean dissociation of the entities/elements making up the building structure(s) and its floor(s), and provides damage free demounting and full value preservation for second life cycle when erecting the building structure(s) and all of the parts making it/them up at another site or to convert for example a parking or industrial building into an office building instead and vice versa.

[0032] The disclosed solution provides at least the following advantages: The fixation elements (the connecting members and elements and fasteners, preferably being metal and/or steel profiles and/or elements) at the underside of the concrete plate(s) provide the possibility of easily affixing building technologies (cable trays, tubes, smart devices like parking indicators, etc.), e.g. lighting supports or signalization (traffic signs, other signs), without having to cut or drill in (and thereby damaging) the concrete plate(s). This ensures that the concrete plate(s) can remain totally undamaged after assembly/reassembly and disassembly. In a current standard building, such local small drilling and/or cutting actions and/or fixations are simply standard, but in reality it incur damage to the concrete and/or metal/steel building elements. With the disclosed connections, such secondary technologies fixed to the disclosed building structure can easily be demounted/maintained/exchanged as being detachably fixed with the disclosed reversible integrated connectors and connecting members/elements and fasteners that detachably link the concrete plate(s) together and to the other framework of the building, such as horizontal support beams without damaging them at assembly and when demounting them. The solution of the disclosure facilitates this assembly and disassembly work and contributes to the circularity of building technologies. Another advantage is that no additional support beams being part of the building have to be placed below the joints of the concrete plates extending perpendicular to the two horizontal support beams as the connecting elements achieve this support by linking each concrete plate together mechanically with adjoining and therefore all the other concrete plates.

[0033] The present disclosure will become apparent from the detailed description given below. The detailed description and specific examples disclose preferred embodiments of the disclosure by way of illustration only. Those skilled in the art understand from guidance in the detailed description that changes and modifications may be made within the scope of the disclosure.

[0034] Hence, it is to be understood that the herein disclosed disclosure is not limited to the particular component parts of the device described or steps of the methods described since such device and method may vary. It is also to be understood that the terminology used herein is for purpose of describing particular embodiments only, and is not intended to be limiting. It should be noted that, as used in the specification and the appended claim, the articles "a", "an", "the", and "said" are intended to mean that there are one or more of the elements unless the context explicitly dictates otherwise. Thus, for example, reference to "a unit" or "a building structure" or "the building structure" or "the unit" may include several devices or a whole system or a whole building or one or more parts making it up, and the like. Furthermore, the words "comprising", "including", "containing" and similar wordings does not exclude other elements or steps.

[0035] Terminology - The term "building structure" is to be interpreted as being at least one, in a non-destructive way, detachable part of a building, such as a floor and/or Mezzanine in an industrial, office, car parking or medical care building, or could be a whole building, e.g. if only made as a smaller and/or temporary one floor building for car or motorcycle or bicycle parking or the like, or being at least one, in a non-destructive way, detachable part of a floor or a Mezzanine of any of the above types of building structures and/or buildings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above objects, as well as additional objects, features and advantages of the present disclosure, will be more fully appreciated by reference to the following illustrative and nonlimiting detailed description of example embodiments of the present disclosure, when taken in conjunction with the accompanying drawings.

Figure 1 shows a left perspective view of a detachable building structure according to an embodiment of the present disclosure and a right perspective view of a detachable building structure according to another embodiment of the present disclosure.

Figure 2 shows in perspective an exploded view of the detachable building structure to the left in fig. 1 according to an embodiment of the present disclosure.

Figure 3 shows a perspective view of the detachable building structure of fig. 2 according to an embodiment of the present disclosure.

Figure 4A shows a top view of a part or area or section of the detachable building structure of fig. 3 according to an embodiment of the present disclosure.

Figure 4B shows a top view of a part or area or section of the detachable building structure of fig. 3 according to an embodiment of the present disclosure.

Figure 5 shows in perspective a bottom view of an underside of the detachable building structure of fig. 4A according to an embodiment of the present disclosure (such a bottom view of the underside of the detachable building structure of fig. 4B would in principle look similar but with some differently designed elements, e.g. plates instead of U-shaped profiles or irons).

Figure 6A shows in perspective a view with some details removed for clarity to be able to see embedded entities of components making up at least a part of the building structure of figs. 1 to 5, in particular entities within the encircled sections A and A1+A2 in figs. 4A and 4B according to an embodiment of the present disclosure.

Figure 6B shows in perspective a view of an entity before other entities are assembled or after some entities are disassembled as parts of the building structure of figs. 1 to 5, in particular a center entity seen in fig. 6A and within the encircled sections A and A1+A2 in figs. 4A and 4B to position entities, when assembled according to an embodiment of the present disclosure.

Figure 6C shows a side view in cross-sectional view along the horizontal support I-beam in a direction to the left in fig. 6A of a joint of at least two concrete plates at the center entity in fig. 6B of a part of the building structure of figs. 1 to 5 according to an embodiment of the present disclosure.

Figure 7 shows a side view in cross-sectional view along an horizontal support I-beam of figs. 4A and 4B within the encircled sections A3 of an detachable assembly of at least two concrete plates to the horizontal support I-beam being part of the building structure of figs. 1 to 5 according to an embodiment of the present disclosure.

Figure 8A shows in perspective a view with details removed for clarity to be able to see embedded entities of components and a connecting element on the underside of a concrete plate making up at least a part of the building structure of figs. 1 to 5, in particular entities within the encircled sections B1-B3 in fig. 4A according to an embodiment of the present disclosure.

Figure 8B shows a side view in cross-sectional view along the connecting element of figs. 5 and 8A according to an embodiment of the present disclosure.

Figure 8C shows a side view in cross-sectional view of the embedded entities and connecting element of fig. 8B but in a perpendicular direction thereto on the underside of a joint of at least two concrete plates according to an embodiment of the present disclosure.

Figure 8D shows a planar view of the connecting element of figs. 5 and 8A to 8C according to an embodiment of the present disclosure.

Figure 9A shows a side view in cross-sectional view of embedded entities and connecting elements on the underside of a joint of a concrete plate making up at least a part of the building structure of figs. 1 to 5, in particular entities within the encircled sections C1-C2 in fig. 4B according to an embodiment of the present disclosure.

Figure 9B shows a side view in cross-sectional view of the embedded entities and connecting element of fig. 9A but in a perpendicular direction thereto on the underside of a joint of at least two concrete plates according to an embodiment of the present disclosure.

Figure 9C shows a planar view of the connecting element of figs. 4B and 9A to 9B according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

[0037] The present disclosure will now be described with reference to the accompanying drawings 1 to 9C, in which preferred example embodiments of the disclosure are shown. The disclosure may, however, be embodied in other forms and should not be construed as limited to the herein disclosed embodiments. The disclosed embodiments are provided to fully convey the scope of the disclosure to the skilled person.

[0038] Figure 1 shows a first aspect of this disclosure with a detachable, in a non-destructive/non-damaging way, building structure 1 being part of or a whole demountable building, such as an industrial or car parking building structure in the view to the left or an office building structure in the view to the right. The building structure 1 comprises at least two detachable horizontal support beams 3, 4 and a detachable assembly system 10. The detachable assembly system 10 is configured to detachably support and hold at least one concrete plate 20, 30 to the detachable horizontal support beams 3, 4. The concrete plate 20, 30 is configured to lay with its ends on and be non-destructive, i.e. non-damaging assembled to the horizontal beams 3, 4 to form at least part of a detachable floor 2 of the demountable building structure 1. The detachable assembly system 10 is configured to detachably support and hold at least two concrete plates 20, 30 to each other and the detachable horizontal support beams 3, 4. The concrete plates 20, 30 are arranged end to end and non-destructive, i.e. non-damaging assembled to each other and the horizontal beams 3, 4 to form at least part of a detachable floor 2 of the demountable building structure 1. Figure 2 shows the detachability of the floor 2 via the horizontal support beams 3, 4 and the concrete plate(s) 20, 30. Figure 2 shows only one larger plate 20, 30 in the middle of the floor 2 laid out between the other smaller concrete plates but in other embodiments, there could be more or no such larger concrete plates laid out. In some embodiments, the horizontal support beams 3, 4 are detachably and non-destructive/non-damaging assembled to vertical standing pillars/columns 5, which vertical standing pillars 5 also are detachably and non-destructive/non-damaging assembled to the horizontal support beams 3, 4. The number of horizontal support beams 3, 4 and vertical standing pillars 5 and their locations depend on several parameters, such as type and size of building 1 and how many storeys or levels the building has, i.e. its height.

[0039] Figure 3 shows the principle of the detachability of the building structure 1 with at least five storeys with a "cut-out" "building brick" in an embodiment with two levels or floors 2 and two layers of associated concrete plates 20, 30 (one layer for each floor), and two pairs of the detachable horizontal support beams 3, 4 (one upper pair and one lower pair) and two pairs of the detachable vertical pillars 5 (one pair furthest to the right and one pair closest to the remaining building 1). In some embodiments, the detachable vertical pillars 5 have a height corresponding to the height of each "building brick" of fig. 3 or a height corresponding to substantially the full height of the whole building 1.

[0040] The demountable building structure 1 of figs. 1 to 3 are shown in some embodiments of figs. 4A and 4B in more detail disclosing the non-destructively detachable structure and way of assembly and disassembly by means of the assembly system 10. In figs. 4A and 4B, the detachable assembly system 10 as part of making up a demountable building structure 1 is shown from above in top views. In figs. 4A and 4B, each concrete plate 20, 30 comprises a first end or edge 21, 31, a second end or edge 22, 32, a third end or edge 23, 33, a fourth end or edge 24, 34, an underside 25, 35 (the underside(s) are not shown in these figs. but in figs. 5, 6C, 7, 8B to 8D, and 9A to 9C), and a top side 26, 36 forming at least a part or section of the upper floor surface of the demountable floor 2. In some embodiments, each concrete plate 20, 30 is square, i.e. quadratic or rectangular, with four corners 27, 37.

[0041] In figs. 4A, 4B of the top of the detachable floor section 2 and in fig. 5 of the bottom or underside of the detachable floor section or floor 2, each concrete plate end 21-24, 31-34 of each concrete plate 20, 30 is shown comprising one or more integrated connectors 40, 41 at the underside 25, 35 of each concrete plate. The concrete plates 20, 30 are put or laid out onto the horizontal support beams 3, 4 in a pattern similar to tiles of the floor 2 with their first and second ends/edges 21, 22, 31, 32 on the horizontal support beams at assembly and removed in a reversible way when detachably demounted. The first and second ends and edges 21, 22, 31, 32 of the concrete plates 20, 30 are shorter in length than the third and fourth ends and edges 23, 24, 33, 34 of the concrete plates in this disclosure but could have substantially the same or the same length in other non-shown embodiments.

[0042] In some embodiments, the first concrete plate end 21, 31 is arranged opposite and extends in parallel with the second concrete plate end 22, 32. In some embodiments, the third concrete plate end 23, 33 is arranged opposite and extends in parallel with the fourth concrete plate end 24, 34. In the disclosure, the first and second concrete plate ends 21, 22, 31, 32 extend perpendicularly to the third and fourth concrete plate ends 23, 24, 33, 34. In some embodiments, the integrated connectors 40, 41 of each concrete plate 20, 30 are elongated and arranged orientated in parallel with each other and in parallel with either the first and second concrete plate ends 21, 22, 31, 32 or the third and fourth concrete plate ends 23, 24, 33, 34. In the shown embodiments of e.g. figs. 4A and 4B, the concrete plates 20, 30 have the same shape and size while in fig. 2 the concrete plates have differing sizes and shapes, e.g. relationship 2:1 in width/breadth meaning that the larger ones have doubled width compared to the narrower ones but all have the same length. The concrete plates 20, 30 are dimensioned such that the concrete plates is able to be assembled together similar to LEGO^® bricks with different sizes and shapes but with separate fastening details of a common assembly system 10 that provides a mutual interface fitting and holding the concrete plates 20, 30 together when laid out and detachably assembled together in a foreseeable and repeatable and non-destructive way enabling an improved recycling of all the entities making up the building structure 1.

[0043] Each integrated connector 40, 41 is an elongated hollow profile or beam with a substantially U- or C-shaped cross-section or U- or C-shaped cross-section shown in figs. 6A, 7, 8A to 8C, 9A and 9B. Each integrated connector 40, 41 is embedded by being cast into an end or edge of each concrete plate 20, 30 with its orifice or mouth of the U- or C-shape exposed and facing out or downwards from the concrete plate 20, 30 to be accessible and engageable by one or more separate fasteners 70, 71, such as one or more T-shaped threaded bolts 70, each bolt 70 being connectable to a nut 71, see figs. 6A, 7, 8A to 8C, 9A and 9B. Each integrated connector 40, 41 is similar to a U- or C-shaped telpher beam into which each T-shaped head of the bolt 70 is introduced in a direction perpendicular to the extension of the integrated connector 40, 41 and the plane of the concrete plate 20, 30 until the full height or thickness of the bolt head is inside the U- or C-shaped cavity or channel of the integrated connector 40, 41 and then the bolt 70 is turned 90° to engage and "hang" with its outer edges on inner edges or rims of the orifice or mouth of the U- or C-shaped opening of the integrated connector 40, 41. The integrated connectors 40, 41 could have a length between 20 cm to 200 cm or preferably between 50 cm to 120 cm. Each integrated connector 40, 41 is fixated in the concrete plate 20, 30 after being casted in by studs or anchors 42. The numbers of anchors 42 depends on the length of the integrated connector 40, 41 but are between three to seven but could be less or more depending on the needed dimensions. The assembly system 10 comprises one or more separate connecting members 50 and connecting elements 60 and one or more such separate fasteners 70, 71. Each integrated connector 40, 41 is elongated and embedded in each underside 25, 35 of the concrete plate 20, 30 at different positions at/along the concrete plate ends 21 - 24, 31 - 34. Each integrated connector 40, 41 is elongated and embedded in each underside 25, 35 of the concrete plate 20, 30 with the same orientation for all integrated connectors in parallel with one or two of the concrete plate ends 21 - 24, 31 - 34. In the embodiments of figs. 4A, 4B, 5, 6A, 7, 8A to 8C, 9A and 9B, each integrated connector 40, 41 is elongated and embedded in each underside 25, 35 of the associated concrete plate 20, 30 with the same orientation for all integrated connectors substantially in parallel or in parallel with any of the third and fourth concrete plate ends 23, 24, 33, 34. In the embodiments shown in figs. 4A, 4B, 5, 6A, 7, 8A to 8C, 9A and 9B, each integrated connector 40, 41 is elongated and embedded in each underside 25, 35 of the associated concrete plate 20, 30 with the same orientation for all integrated connectors substantially perpendicular or perpendicular to any of the first and second concrete plate ends 21, 22, 31, 32.

[0044] In the embodiment of fig. 4A, there is shown four connecting members 50 at the second end 22 of the left concrete plate 20 in the second lowest row of concrete plates 20, 30 and three connecting members 50 at the first end 31 of the other concrete plate 30 to the left in the same row. The number of integrated connectors 40, 41, connecting members 50 and elements 60 may differ between concrete plates 20, 30 depending on the size and type of building 1 and the number of levels, but preferably, each concrete plate 20, 30 comprises at least two integrated connectors 40, 41 at each end 21 - 24, 31 - 34 and is adapted to be detachably connected with at least two or more connecting members 50 and associated fasteners and nuts 70, 71 at the first and second ends 21, 31, 22, 32 to the horizontal beams 3, 4. In some embodiments, each concrete plate 20, 30 comprises at least two integrated connectors 40, 41 at each end 21 - 24, 31 - 34 and is adapted to be detachably connected with at least one or more connecting elements 60 and associated fasteners and nuts 70, 71 to at least one or two adjoining ends of other concrete plates.

[0045] In some embodiments, see e.g. figs. 4A, 4B, 5, 6A, 7, 8A to 8C, 9A and 9B, the separate connecting members 50 and elements 60 and fasteners 70, 71 are detachably fastened to the integrated connectors 40, 41 of the concrete plates 20, 30. This enable detachably supporting and holding each concrete plate 20, 30 in place when lying with the first concrete plate end 21, 31 on a first horizontal support beam 3 and lying with the second concrete plate end 22, 32 on a second horizontal support beam 4 of the building structure 1.

[0046] In figs. 5, 8A, 8B, 8C, 8D, an embodiment of the connecting element 60 as a U-shaped beam or iron is shown. In fig. 8D, this U-shaped connecting element 60 is shown in a planar view from below. In figs. 9A, 9B and 9C, an embodiment of the connecting element 60 as a plate is shown. In fig. 9C, this U-shaped connecting element 60 is shown in a planar view. The U-shaped connecting element 60 is referred to as sections B1, B2 and B3 in fig. 4A shown with dotted lines in that fig. as being placed under the concrete plates 20, 30 forming the floor 2. The plate shaped connecting element 60 is referred to as sections C1 and C2 in fig. 4B shown with dotted lines in that fig. as being under the concrete plates 20, 30 forming the floor 2.

[0047] In figs. 4A, 5, 8A to 8C, the U-shaped connecting element 60 is configured to be detachably attached with three bolts 70 and three nuts 71 on one end to one first concrete plate 20 or 30 and detachably attached with three bolts 70 and three nuts 71 on the other end to one second concrete plate 30 or 20. In figs. 4B, 9A and 9B, the plate shaped connecting element 60 is configured to be detachably attached with ten bolts 70 and ten nuts 71 in two rows (one row comprising five bolts and five nuts) on one end to one first concrete plate 20 or 30 and detachably attached with ten bolts 70 and ten nuts 71 in two rows (one row comprising five bolts and five nuts) on the other end to one second concrete plate 30 or 20. In the embodiment of fig. 4A, the concrete plates 20, 30 therefore have at least one, but two shown integrated connectors 41 at/along each third and fourth end 23, 24, 33, 34 in a row to which the bolts 70 and nuts detachably fasten the U-shaped connecting element 60. In the embodiment of fig. 4B, the concrete plates 20, 30 therefore have at least two, but four shown integrated connectors 41 at/along each third and fourth end 23, 24, 33, 34 in a row to which the bolts 70 and nuts detachably fasten the plate shaped connecting element 60. In other embodiments, the U-shaped connecting element 60 could also be detachably attached with the same number of fasteners and nuts and integrated connectors 41 as for the plate shaped connecting element and the concrete plates 20, 30 be accordingly adapted to different configurations by casting in one integrated connector at each location along its third and second ends 23, 24, 33, 34 as in fig. 4A or two integrated connectors 41 at each location along its third and second ends 23, 24, 33, 34 as in fig. 4B.

[0048] In figs. 4A and 4B, a double arrow at the lower part of the fig. symbolises the direction of driving if the floor 2 is part of a parking building 1, whereby the detachable attachment by means of the assembly system 10 of the disclosure means that for example when a car passes from below in figs. 4A and 4B over the concrete plates 20, 30 the lowest concrete plate 20 to the left or 30 to the right is "mechanically linked" to the next concrete plate 20 or 30 and also subsequent concreted plates further up in figs. 4A and 4B, so that the load from the car is in fact "shared" by all the concrete plates 20, 30 together, the same goes if the car drives in the other direction improving the sturdiness and prolonging the life span of all parts of the building structure 1 when assembled.

[0049] The concrete plates 20, 30 can be laid out and detachably assembled in any suitable pattern, such as with two or more first concrete plates 20 side by side or with two or more second concrete plates 30 side by side or with two first concrete plates 20 with their third and fourth ends 23 and 24 forming a joint and their first and second ends 21, 22 forming joints with the first and second ends 31, 32 of the second concrete plates 30. This layout pattern of concrete plates 20, 30 forming the detachable floor 2 as shown on figs. 1, 2, 4A, 4B and 5, i.e. this is freely selectable, the same goes for the numbering of concrete plates as the laying out of them is possible to do independently of where each concrete plate is laid due to the fact that they are interchangeable relative each other and the assembly system 10 is adapted for any concrete plate being laid in any location.

[0050] In some embodiments, as for example shown in figs. 4A, 4B, 6A, 6B, 6C and referred to as sections A + A1 + A2 for clarity, the assembly system 10 comprises at least a first spacer element 80 arranged on the first horizontal support beam 3 and at least a second spacer element 80 arranged on the second horizontal support beam 4. The spacer element 80 is configured to align with a joint between at least two concrete plates 20, 30 and to correctly position each concrete plate in relation to each other and one or more of the other concrete plates when laid out on the horizontal support beams 3, 4 and detachably assembled together as the floor 2 of figs. 2, 5, 4A and 4B. In figs. 4A and 4B, each spacer element 80 is located in a joint between two concrete plates 20 to the left as section A1 + A2. In figs. 4A and 4B, each spacer element 80 is located in a joint between four concrete plates formed between the adjoining corners 27, 37 of the concrete plates, two first concrete plates 20 to the left of the corner joint and two second concrete plates 30 to the right of the corner joint as section A. As the concrete plates 20 and 30 are configured in the same way, the spacer element 80 can be placed in any joint between any two or more concrete plates in other embodiments. In an embodiment, each spacer element 80 is fixedly attached to an detachable horizontal support beam 3, 4 at locations adapted to the dimensions of the concrete plates 20, 30 to control the layout and detachable assembly of the concrete plate(s) and the movements of the concrete plate(s) when loaded from above, e.g. by a car driving over it/them. In some embodiments, each spacer element 80 is cross-shaped or T-shaped (not shown) or I-/plate-shaped (not shown) to be able to fit between differently shaped joints, such as joints that end close to a wall of a building 1 and the spacer element 80 as seen in figs. 4A and 4B furthest to the left as the leftmost arm or leg of the cross-shape of the spacer element 80 does not have to extend to the left, instead, it could be non-existing so that only the arms of the cross extending upwards and downwards and to the right in these figs. exist.

[0051] In some embodiments, e.g. as shown in figs. 4A, 4B, 6A, 6B and 6C, the spacer element 80 is arranged symmetrically on the horizontal beam 2, i.e. in the middle of its upper flange as seen across its width.

[0052] In some embodiments, e.g. as shown in figs. 1, 2 and 3, the building and/or building structure 1 comprises at least one further or third horizontal support beam 3, 4. In some embodiments, e.g. as shown in figs. 1, 2 and 3, the building and/or building structure 1 comprises at least one further or third horizontal support beam 3, 4 and at least two further concrete plates 20, 30 laid out with their first ends 21, 31 on the first horizontal support beam 3 or on the second horizontal support beam 4 of the building structure 1 and laid out with their second ends 22, 32 on the second or the first horizontal support beam end to end with each other and the other concrete plates 20, 30. This form joints between the concrete plate ends 21 - 24, 31 - 34, and the concrete plates 20, 30 comprises end/edge corners 27, 37 that thereby adjoin and form a cross-shaped joint at each adjoining four concrete plates that align with the first or second or other spacer elements 80 having a cross-shape.

[0053] In some embodiments, e.g. as shown in figs. 4A, 4B, 5, 6A and 7, each separate connecting member 50 is a metal clamp with only one through hole 51. The one through hole 51 of the metal clamp 50 is configured to receive a fastener 70. The metal clamp 50 is L-shaped. The through hole 51 of the metal clamp 50 is made in one of the legs of the L-shape. The through hole 51 extends in a direction being substantially parallel with or is parallel with the extension of the other leg of the L-shape of the metal clamp 50. This separate metal clamp 50 is configured to detachably clamp a concrete plate end 21 - 24, 31 - 34 to a horizontal support beam 3, 4 by means of its L-shape engaging the underside 25, 35 of the concrete plate end with one leg and engaging the horizontal support beam with the other leg after being thread onto a fastener 70 by means of the through hole 51 and after the nut 71 of the fastener is thread onto the fastener and tightened. The integrated connectors 40 that are casted into the concrete plates 20, 30 at their first and second ends 21, 22, 31, 32 is extending substantially in parallel or in parallel with the third and fourth ends 23, 24, 33, 34 of each concrete plate. This means that the integrated connectors 40 also extend substantially perpendicular or perpendicularly to the first and second ends 21, 22, 31, 32 of the concrete plates meaning that the metal clamp 50 and its fastener 70 and nut 71 is able to be moved inside the inner channel of the integrated connector 40 along its length before the nut 71 is tightened and the metal clamp 50 clamped to detachably and securely engage the corresponding upper flange of the associated horizontal support beam 3, 4 from below, wherefore this gives an adjustability of the positioning of the metal clamp 50 at assembly and disassembly of the concrete plate 20, 30 enhancing the assembly and disassembly work. This is clearly understood when viewing at least fig. 7. The metal clamp 50 and its positioning is also referred to as sections A and A3 in figs. 4A and 4B for clarity on how and where it is arranged in the assembly system 10.

[0054] In some embodiments, e.g. as shown in figs. 6A, 6C and 7, the detachable assembly system 10 comprises deformation bearing and/or wear protection 90 layered between the concrete plate ends 21 - 24, 31 - 34 and the horizontal beams 3, 4 when the concrete plates 20, 30 are detachably assembled as parts of the floor 2. This deformation bearing(s) 90 is configured to compensate for movements and/or enable to maintain pretension so that the metal clamp 50, i.e. the fastener 70 and the nut 71 do not come loose or start "slacking" after assembly and tightening and when subjected to load.

[0055] In some embodiments, each separate connecting element 60 is a metal/steel plate or a metal/steel U-beam configured to extend over the concrete plate ends 23, 24, 33, 34 at a joint between two concrete plates 20, 30, this is clearly seen in figs. 4A, 4B, 5, 8A, 8C and 9B. In some embodiments, each separate connecting element 60 comprises at least two through holes 61, preferably between four to twenty through holes, this is clearly seen in figs. 8D and 9C. In some embodiments, the pattern, spacing, dimensions and shapes of the through holes 61 of the connecting element 60 are adaptable to the need of the dimensioning and design of the floor 2 and the building structure 1, i.e. the holes 61 could be more in the same row of figs. 8D and 9C and/or be more than two rows of holes in fig. 8D or the like, this design depends on the loads that are to be supported by the floor 2 when assembled.

[0056] In some embodiments, e.g. as shown in figs. 5, 8A to 8D, and 9A to 9C, each through hole 61 of the connecting element 60 is configured to receive a fastener 70 and is located in the connecting element to align at least one of the through holes 61 with at least one integrated connector 41 of one of the concrete plates 20 and to align at least one other through hole 61 with at least one integrated connector 41 of another concrete plate 30 to enable introducing the fasteners 70 through the through holes 61 and out below the connecting element to detachably fasten the connecting element to both concrete plates by threading on and tightening the nuts 71 to the fasteners from below the connecting element to hold the concrete plates together end to end when assembling the floor 2.

[0057] In some embodiments, e.g. as shown in figs. 8D and 9C, each through hole 61 of the connecting element 60 is elongated or oblong or a slit. In some embodiments (not shown), each through hole 61 is orientated with its larger dimension in a direction being in parallel with the extension of the integrated connectors 41 of a concrete plate 20, 30. In some embodiments, e.g. as understood when viewing figs. 5, 8A to 8D and 9A to 9C, each through hole 61 is orientated with its larger dimension in a direction being perpendicular to the extension of the integrated connectors 41 of a concrete plate 20, 30. This provides an adjustability of positioning the connecting element 60 and its fasteners 70 and nuts 71 relative the integrated connectors 41 when assembling the floor 2 with its concrete plates 20, 30. In some embodiments, each concrete plate 20, 30 comprises at least two integrated connectors 40, 41 at each concrete plate end 21 - 24, 31 - 34. Each through hole 61 is configured to receive a fastener, i.e. the stem of a bolt 70 therethrough. Each through hole 61 is located in the metal/steel plate or U-beam/-iron 60 to enable the fasteners 70 to be aligned with the integrated connectors 40, 41 at the underside 25, 35 of any concrete plate 20, 30 when the connecting element 60 is to be detachably connected to the concrete plates to hold them together end to end when the nuts 71 are tightened and holds the connecting element against the concreted plate 20, 30 by pulling in the associated T-shaped bolt 70.

[0058] In some embodiments, e.g. as shown in figs. 6A, 6B, 6C, 7, 8C and 9B, the assembly system 10 comprises one or more water sealings 100 and/or one or more fire protectors or fire protective members or joints 110 in the joints between concrete plates 20, 30. These sealings and protectors 100, 110 are easily removed and replaced if broken or weared out as the concrete plates 20, 30 are easily disassembled to enable for new such sealings and protectors to be quickly and with less effort introduced into the joint to renew the functionality of these sealings and protectors.

[0059] Hence, the innovative system 10 of assembling and/or coupling and/or joining of concrete plates 20, 30 mechanically as part of a detachable floor 2 in a demountable building structure or building 1 as in this disclosure is done both in the longitudinal and cross-wise direction (relative the extension and plane of the concrete plates) providing both a vertically and horizontally supportive and adaptable assembly while enabling a dynamically sturdy but flexible and non-destructive demountable way of "holding" and keeping the concrete plates in place in the building structure 1.

NOMENCLATURE

[0060] 

1: Building structure, e.g. an industrial or parking or functional or office building or multistorey building for any purpose. 2: Floor of the building structure and/or a Mezzanine. 3: One/First/Third Framework/Support element or beam of the building structure. 4: Another/Second/Third Framework/Support element or beam of the building structure. 5: Vertical/Standing beams or pillars/columns of the building structure.

10: Assembly system enabling non-destructive erection and dismounting of buildings 1, i.e. in a non-damaging and detachable and reusable way by supportive and non-destructive and detachable holding of at least one concrete plate 20, 30 for forming part of or the whole concrete floor 2 in the building 1 providing a building 1 being easily and non-damaging disassembled into building pieces that are configured to be moved from one site to another site and be re-erected and/or providing a building that is easily and non-damaging disassembled into building pieces that then are easily assembled into another type of building, e.g. changed from an industrial or parking building into an office building or other purpose building without having to damage the building pieces when assembling and disassembling them.

20: One/First plate of concrete. 21: First end/edge of 1^st concrete plate. 22: Second end/edge of 1^st concrete plate opposite the first end/edge 22. 23: Third end/edge of 1^st concrete plate. 24: Fourth end/edge of 1^st concrete plate opposite the third end/edge. 25: Underside of one/a first concrete plate 20. 26: Top or floor side of one/a first concrete plate 20. 27: Edge corner of one/a first concrete plate 20.

30: Another/Second plate of concrete. 31: First end/edge of 2^nd concrete plate. 32: Second end/edge of 2^nd concrete plate. 33: Third end/edge of 2^nd concrete plate. 34: Fourth end/edge of 2^nd concrete plate. 35: Underside of another/a second/third concrete plate 30. 36: Top or floor side of another/a second/third concrete plate 30. 37: Edge corner of another/a second/third concrete plate 30.

40: One/First connector integrated/moulded/pre-casted in a concrete plate 20, 30.

41: Another/Second connector integrated/moulded/pre-casted in a concrete plate 20, 30.

42: Anchors/Pins of the integrated connector for fixation in the concrete plate after curing.

50: Connecting member in the form of a clamp.

51: Through hole of the clamp

60: Connecting element in the form of a metal/steel plate and/or U-/I-/H-beam/-iron.

61: Through holes/slits of the connecting element.

70: Fasteners/Bolts for detachable and non-destructive assembly of connecting members/elements 50, 60 and concrete plates 20, 30 to each other and/or other parts and/or framework of building 1 via the integrated concrete plate connectors 40, 41. 71: Nuts for threading onto the fasteners to attach the connecting members/elements.

80: Spacer element for creating and maintaining positioning of concrete plates in relation to each other when detachably and non-destructively assembled together as part of or as a whole deck or floor of a building.

90: Deformation bearing/Wear protection in elastic material

100: Sealing forming a watertight joint between concrete plates

110: Fire protective joint between concrete plates

Claims

1. A building structure (1), such as in industrial, functional, or car parking buildings, comprising at least two detachable horizontal support beams (3, 4) and an detachable assembly system (10) configured to detachably hold at least one concrete plate (20, 30), which is arranged on the horizontal support beams to form at least part of a floor (2) of the building structure (1), each concrete plate (20, 30) comprising a first end (21, 31), a second end (22, 32), a third end (23, 33), a fourth end (24, 34), an underside (25, 35) and a top side (26, 36) forming the upper floor surface, wherein each concrete plate end (21 - 24, 31 - 34) of each concrete plate comprises one or more integrated connectors (40, 41) at the underside (25, 35), and the assembly system (10) comprises one or more separate connecting members (50) and one or more separate fasteners (70, 71), which separate connecting members and fasteners are configured to be detachably fastened to the integrated connectors (40, 41) of the concrete plate to detachably support and hold each concrete plate in place when lying with the first concrete plate end (21, 31) on a first horizontal support beam (3) and lying with the second concrete plate end (22, 32) on a second horizontal support beam (4) of the building structure (1), wherein the assembly system (10) further comprises at least a first spacer element (80) being arranged on the first horizontal support beam and at least a second spacer element (80) being arranged on the second horizontal support beam, the spacer elements being configured to align with the joint between each concrete plate and the horizontal support beams and to correctly position each concrete plate (20, 30) in relation to the horizontal support beams when laid out on the horizontal support beams and detachably assembled to the horizontal support beams as the floor (2).

2. The building structure (1) according to claim 1, wherein the detachable assembly system (10) is configured to detachably support/hold at least two concrete plates (20, 30), which are arranged end to end to each other and on the horizontal support beams (3, 4) to form at least part of the floor (2) of the building structure (1), and the assembly system (10) comprises one or more connecting elements (60) and one or more separate fasteners (70, 71), which separate connecting members (50) and elements and fasteners are configured to be detachably fastened to the integrated connectors (40, 41) of the concrete plates to detachably support and hold each concrete plate in place when lying with the first concrete plate end (21, 31) on the first horizontal support beam (3) and lying with the second concrete plate end (22, 32) on the second horizontal support beam (4), wherein the assembly system (10) further comprises at least the first spacer element (80) being arranged on the first horizontal support beam and at least the second spacer element (80) being arranged on the second horizontal support beam, the spacer elements being configured to align with the joint between at least the two concrete plates and to correctly position each concrete plate (20, 30) in relation to the horizontal support beams, each other and one or more of other concrete plates when laid out on the horizontal support beams and detachably assembled together as the floor (2).

3. The building structure (1) according to claim 1 or 2, wherein each integrated connector (40, 41) is embedded in each underside of each concrete plate (20, 30) at different positions at the concrete plate ends (21 - 24, 31 - 34) and with the same orientation for all integrated connectors of each concrete plate in parallel with one or two of the concrete plate ends.

4. The building structure (1) according to claim 1, 2 or 3, wherein the first concrete plate end (21, 31) is arranged opposite and in parallel with the second concrete plate end (22, 32) and the third concrete plate end (23, 33) is arranged opposite and in parallel with the fourth concrete plate end (24, 34), and the first and second concrete plate ends (21, 22, 31, 32) are arranged perpendicularly to the third and fourth concrete plate ends (23, 24, 33, 34), wherein the integrated connectors (40, 41) of each concrete plate (20, 30) are arranged orientated in parallel with each other and in parallel with either the first and second concrete plate ends or the third and fourth concrete plate ends.

5. The building structure (1) according to any preceding claim, comprising at least one further or third horizontal support beam (3, 4) and at least one further concrete plate (20, 30) laid out with the first end (21, 31) on the first horizontal support beam (3) or on the second horizontal support beam (4) and laid out with the second end (22, 32) on the second or the first horizontal support beam end to end with adjoining other concrete plates (20, 30) forming joints between the concrete plate ends (21 - 24, 31 - 34), and the concrete plates comprises end/edge corners (27, 37) that thereby adjoin and form a T- or cross-shaped joint between two or four concrete plates that align with the first or second or other spacer elements (80) having a T- or cross-shape.

6. The building structure (1) according to any preceding claim, wherein each separate connecting member (50) is a metal clamp with only one through hole (51) configured to receive a fastener (70), which clamp (50) is L-shaped and the through hole is made in one of the legs of the L-shape and extends in a direction being substantially parallel with or is parallel with the extension of the other leg of the L-shape.

7. The building structure (1) according to claim 6, wherein each separate connecting member (50) is configured to detachably clamp a concrete plate end (21- 24, 31 - 34) to a horizontal support beam (3, 4) by means of its L-shape engaging the underside (25, 35) of the concrete plate end with one leg and engaging the horizontal support beam with the other leg after being thread onto a fastener (70) by means of the through hole (51) and after the nut (71) of the fastener is thread onto the fastener and tightened.

8. The building structure (1) according to any preceding claim, wherein each spacer element (80) is fixedly attached to a detachable horizontal support beam (3, 4) at locations adapted to the dimensions of the concrete plates (20, 30).

9. The building structure (1) according to any preceding claim, wherein the detachable assembly system (10) comprises deformation bearing and/or wear protection (90) layered between the concrete plate ends (21 - 24, 31 - 34) and the horizontal beams (3, 4) when the concrete plates are detachably assembled as parts of the floor (2).

10. The building structure (1) according to any preceding claim, wherein each separate connecting element (60) is a metal plate or a metal U- profile corresponding to a small part of a beam configured to extend over the concrete plate ends (23, 24, 33, 34) at a joint between two concrete plates (20, 30) and to extend over the joint itself.

11. The building structure (1) according to claim 10, wherein each separate connecting element (60) comprises at least two through holes (61), preferably between four to twenty through holes.

12. The building structure (1) according to claim 11, wherein each through hole (61) of the connecting element (60) is configured to receive a fastener (70) and is located in the connecting element to align at least one of the through holes (61) with at least one integrated connector (40, 41) of one of the concrete plates (20) and to align at least one other through hole (61) with at least one integrated connector (40, 41) of another concrete plate (30) to enable introducing the fasteners (70) through the through holes (61) and out below the connecting element to detachably fasten the connecting element to both concrete plates by threading on and tightening the nuts (71) to the fasteners from below the connecting element to hold the concrete plates together end to end.

13. The building structure (1) according to claim 11 or 12, wherein each through hole (61) of the connecting element (60) is elongated or oblong or a slit, and each through hole (61) is orientated with its larger dimension in a direction being perpendicular to the extension of the integrated connectors (40, 41) of a concrete plate (20, 30).

14. The building structure (1) according to any preceding claim, wherein each concrete plate (20, 30) comprises at least two integrated connectors (40, 41) at each concrete plate end (21- 24, 31 - 34).

Drawing