ARRANGEMENT FOR FORMING FIXING IN A CONCRET STRUCTURE AND FIXING METHOD

Abstract

 The invention relates to an arrangement for fixing an element (15) to a concrete structure (12), which fixing is made through an opening in the object being constructed. The arrangement comprises a support structure (1) installed inside the element (15) before casting, a support member (2) to be inserted into the support structure (1), said support member (2) comprising a dimensioned rod (6) to which a bracket (7) is attached for placing on the concrete structure (12), and the arrangement comprises a casting (10) around the support structure (1).

Description

Field of the Invention

[0001] The invention relates to fixing arrangements and fixing methods used in various concrete structures.

Background of the Invention

[0002] Steel reinforced concrete tile elements are used especially in apartment buildings. They can be supported by surrounding structures such as load-bearing wall structures and tile structures. The design of the connecting parts must take into account the support during installation, the loads in use and the supports, and especially the fire protection when using steel structures.

[0003] In situations where the load-bearing tile element is installed in the opening in the intermediate floor, care must also be taken of the space required during the installation of the connection structures. In particular, when fixing a tile element or space element, the bottom part of which consists of a load-bearing reinforced concrete slab, through the openings in the intermediate floors and tops of the building, the connection structures must not prevent the building element from being installed through the opening.

[0004] The problem with the prior art installation solutions is that they are not well suited to the limited installation spaces in question, thus causing slowness and technical problems in the installation.

[0005] If the intermediate floor of the building is made of cavity slabs, the connection structures of the prior art must be provided with reserve holes or lowering the cavity slab to make the installation, thereby reducing the cavity slab durability characteristics.

BRIEF DESCRIPTION OF THE INVENTION

[0006] It is an object of the invention to provide a fixing arrangement capable of providing a practical and secure installation structure suitable for limited installation spaces. This is achieved by an arrangement for fixing an element to a concrete structure, which fixing is made through an opening in the object being constructed. The arrangement comprises a support structure installed inside the element before casting, a support member to be inserted into the support structure, said support member comprising a dimensioned rod to which a bracket is attached for placing on the concrete structure, and the arrangement comprises casting around the support structure.

[0007] The invention also relates to a method of fixing an element to a concrete structure, the fixing being made through an opening in the object being constructed. A support structure is installed inside the element before casting, a bar is dimensioned to which a bracket is attached to form a support member, the support member is inserted into the support structure, and the bracket is placed on the concrete structure, and a casting is performed around the support structure.

[0008] Various exemplary embodiments of the invention are characterized by what is disclosed in the dependent claims.

[0009] The invention is based on a support structure which is installed same time with the casting of the element and on a support member which can be inserted into the support structure, the support member comprising a rod to which a bracket is attached to be placed on the concrete structure.

[0010] Benefits of the invention include practical and confident installation in confined spaces and good durability of structures. The invention allows the structure to be joined to remain intact, which improves the durability characteristics.

Brief description of the drawings

[0011] In the following, exemplary embodiments of the invention and their operation and advantages will be described with reference to the accompanying drawings, in which:

Fig. 1 shows a fixing arrangement according to an exemplary embodiment of the invention, for example in apartment buildings.

Figure 2 shows the dimensioning of a support structure according to an exemplary embodiment of the invention.

Fig. 3 shows the dimensioning of the support member according to an exemplary embodiment of the invention.

Fig. 4 shows a fixing arrangement according to one exemplary embodiment of the invention, for example in apartment buildings where the height adjustment in the fixing arrangement is in the bracket.

DESCRIPTION OF EXEMPLARY EMBODIMENTS OF THE INVENTION

[0012] Fig. 1 shows a fixing arrangement between element 15 and concrete structure according to an exemplary embodiment of the invention, for example in apartment buildings. The concrete structure is, for example, a concrete slab 12 having an opening for the element 15 and from above said opening the element can be fixed through a gap formed by one or more overlapping openings of about the same size in the object being constructed. This gap is, for example, a gap formed by openings of the same size in overlapping intermediate floor slabs or top slabs, where the element to be installed must have no protruding fasteners that could hit the edges of the installation gap or the edges of the installation opening in the intermediate floor or top floor. For this reason, the fixing arrangement is fixed in place only just before it is supported by the structure to which the fixing arrangement is installed. The fixing is carried out at the edges of, for example, a horizontal installation opening in the object being constructed.

[0013] For example, the concrete slab is a cavity clab 12. The element 15 is, for example, a concrete slab, and in most embodiments, the element 15 is a steel concrete slab 15, which is reinforced. The concrete slab 12 or element 15 may be one or more of the reinforced concrete structures, the fiber concrete structure and the tensioned concrete structure. The arrangement comprises a support structure 1, which is installed same time with the casting of the element. The support structure 1 is preferably tubular and has a metal material. A support member 2 is inserted into the support structure 1 with a dimensioned rod 6, to which rod is attached a bracket 7 for placing on the concrete structure 12. The bracket 7 and the dimensioned rod 6 are of metal material, and the bracket is fastened, for example, by welding or mechanical fastening to the rod. The support structure preferably has a metal support surface 3 and additional reinforcement 4 to form the fastening strength. The above-mentioned metallic materials are preferably steel. The support structure 1 may comprise a threaded hole 14, which may preferably also be a nut welded to the structure, and an adjusting bolt 8, when by adjusting the inclination of the support member 2 can be performed a height adjustment to the structure. The height adjustment of the threaded hole and the adjusting bolt can also be in the bracket jaw 7. The height adjustment controls the tolerances of the structures. Said supporting surface 3 acts as a hinge point, in particular, which allows the height adjustment by means of the adjusting bolt 8. In the embodiment according to the invention, the support surface 3 allows height adjustment. The support surface 3 enables the inclination of the support member 2 to be adjusted by means of the adjusting bolt 8 installed on the threaded hole 14, whereby the height of the element 15 can be adjusted relative to the tile 12. In an alternative embodiment of the invention it is possible to reduce the joint tolerance and ensure the correct position (horizontal or almost horizontal) of the support member 2 if the support structure 1 is horizontal. The inner dimension and the outer dimension of the support member 2 differ significantly from each other, however, allowing for a sufficient clearance of parts for the installation of the support member so that the support member is easily pushed into the supporting structure during the installation phase.

[0014] The fixing arrangement according to the invention comprises a casting 10 around the support structure 1. The thickness of the casting is dimensioned to protect the support structure in the fire situation 1. The space between the element 15 and the concrete slab 12 is cast by seam molding or solder casting, in which the support member 2 remains in its entirety. The solder casting protects the metal parts of the fixing arrangement in the event of a fire, so the structure retains its bearing capacity. A concrete casting with a thickness of at least 25 mm is cast on the upper surface of the concrete slab 12. The portion of the bracket 7, which is supported on the concrete slab 12, remains in the concrete casting in its entirety so that the concrete cover protects the bracket 7 in case of fire. Instead of concrete casting, a screed layer can also be used to form a fire protection for the bracket 7.

[0015] The upper portion of the bracket 7 is so low that it remains within the cavity core casting surface concrete or concrete-based screed layer 10 so that the screed or surface concrete layer protects the top of the flap in the fire situation. The thickness of the protective layer thus formed is in accordance with the required fire resistance time.

[0016] The fixing arrangement can be dimensioned so that its capacity is sufficient to transfer all the necessary installation and operational loads to the adjacent cavity slab or some of the loads can also be transferred to the so-called seam molding through a so called tent peg effect, whereby the fixing arrangement acts as a support structure during installation and ensures the functionality of the structure by forming a force transferring mechanical connection, for example between a reinforced concrete slab and a cavity slab.

[0017] The fixing arrangement (console structure) can also be optimized for a variety of tile structures, such as stationary tiled structures or a slab structure of solid board panels. In these cases, it is particularly advantageous that the tubular steel structure to be incorporated into the solid bulkhead to be supported will always remain the same, so that when designing or producing the slab, it is not necessary to know the type of surrounding structures. This allows the use of standardized structures and manufacturing methods, for example, in modular structures, such as part of space elements. In embodiments according to the invention, the advantage of non-cavity slabs is also that the height of the structure at the support remains high and does not need to leave the reserve holes which are technically inconvenient in the manufacture of the structure, and therefore, in the prior art embodiments, must be made exactly in the right position when casting the tile elements or local casting structures.

[0018] Figure 2 shows the dimensioning of a support structure according to an exemplary embodiment of the invention. The length of the tubular part of the supporting structure 1 can be, for example, 200-300 mm. The tubular part is preferably a factory-made standard profile whose dimensions and steel strength properties are selected based on the loads of the fixing arrangement. In embodiments of the invention, the shape of the support structure part 1 may be also other than a tube or tubular.

[0019] Fig. 3 shows the dimensioning of the support member according to an exemplary embodiment of the invention. The dimensions of the jaw 7 of the bracket member are chosen so that it can be used to move the required support force to the plate 12. The jaw section may be made preferably from a factory-made standard profile, for example, an L-profile having a flank, for example, of 100-200 mm, and the width of the jaw section is also e.g. 100-200 mm. The dimensions, strengths and type of steel are selected based on the load on the part. The rod 6 is preferably made from a standard factory-made profile whose dimensions and steel strength properties are selected on the basis of the loads applied to the part. The length of the rod may be, for example, 200-400 mm. The dimensions of the rod are aligned with the dimensions of the support structure 1 of Figure 2. The jaw 7 is fastened to the rod 6 preferably by welding, and the attachment point is selected so that the jaw 7 can support the tile 15 to the desired height level relative to the height level of the top surface of the slab 12.

[0020] The support structure 1 may also be provided with structures that allow the support structure to function as a lifting anchor, as part of a lifting anchor structure or as an additional structure supporting the lifting anchor.

[0021] Fig. 4 shows a fixing arrangement according to an exemplary embodiment of the invention, for example in block houses, where the height adjustment in the fixing arrangement is in the bracket 7 and / or alternatively in the supporting structure 1.

[0022] The metallic parts and structures shown in embodiments of the invention may also be other materials such as, for example, ceramic material.

[0023] The steel fastening arrangement according to an exemplary embodiment of the invention enables the supporting reinforced concrete tile element to be supported in a corresponding manner to the adjacent cavity slab so that the upper surface of the cavity core remains intact and hence the capacity of the cavity slab can be fully utilized in designing the structures.

[0024] As will be apparent to those skilled in the art, the invention and its embodiments are not limited to the exemplary embodiments described above. The expressions of the existence of technical characteristics claimed by the claims are transparent so that the presentation of the technical features does not exclude and does not require the existence of other technical features not disclosed in the claims.

Claims

1. An arrangement for fixing an element (15) to a concrete structure (12), which fixing is made through an opening in the object being constructed,
characterized in that the arrangement comprises:

- a support structure (1) installed inside the element (15) before casting,

- a support member (2) to be inserted into the support structure (1), said support member (2) comprising a dimensioned rod (6) to which a bracket (7) is attached for placing on the concrete structure (12),

and the arrangement comprises casting (10) around the support structure (1).

2. An arrangement for fixing according to claim 1, characterized in that the concrete structure (12) is a concrete slab (12).

3. An arrangement for fixing according to claim 2, characterized in that the concrete slab (12) is a cavity slab (12).

4. Arrangement for fixing according to claim 1, characterized in that the element (15) is a reinforced concrete slab (15).

5. Arrangement for fixing according to claim 2 or 4, characterized in that the concrete slab (12) or element (15) is one or more of the reinforced concrete structure, the fiber concrete structure and the tensioned concrete structure.

6. Arrangement for fixing according to claim 1, characterized in that the support structure (1) is tubular and has a metal or ceramic material.

7. Arrangement for fixing according to claim 1, characterized in that the supporting structure (1) comprises an additional reinforcement (4) for reinforcing the fastening strength.

8. Arrangement for fixing according to claim 1, characterized in that the support structure (1) comprises a threaded hole (14) for fixing the adjusting bolt (8) for height adjustment, and a hinge point for the support surface (3) for height adjustment.

9. A method of fixing an element (15) to a concrete structure (12), the fixing being made through an opening in the object being constructed,
characterized by that:

- a support structure (1) is installed inside the element (15) before casting,

- a rod (6) is dimensioned to which a bracket (7) is attached to form a support member (2),

- the support member (2) is inserted into the support structure (1), and the bracket (7) is placed on the concrete structure (12),

- and casting (10) is performed around the support structure (1).

10. The fixing method according to claim 9, characterized in that the concrete slab (12) is a concrete slab (12).

11. The fixing method according to claim 9, characterized in that the concrete structure (12) is a cavity core (12).

12. The fixing method according to claim 9, characterized in that the element (15) is a concrete slab (15).

13. The fixing method according to claim 10 or 12, characterized in that the concrete slab (12) or the element (15) is one or more of the reinforced concrete structure, the fiber concrete structure and the tensioned concrete structure.

14. The fixing method according to claim 9, characterized in that the support structure (1) is tubular, and has a metal or ceramic material.

15. The fixing method according to claim 9, characterized in that an additional reinforcement (4) is added to the support structure (1) to strengthen the fastening strength.

16. The fixing method according to claim 9, characterized in that the height of the support structure (1) is adjusted by means of the adjusting bolt (8) through a threaded hole (14) of the supporting structure, in which height adjust the supporting surface (3) as a hinge point.

Drawing