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(11) | EP 3 851 618 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
| published in accordance with Art. 153(4) EPC |
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| (54) | DEVICE FOR ALTERNATELY JACKING ADDED STOREY OF BUILDING WITH HIGH-STRENGTH CONCRETE COLUMNS AND STEEL SLIDEWAYS AND CONSTRUCTION METHOD THEREFOR |
| (57) The present invention provides a device for jacking and adding story of a building
with high-strength concrete columns and steel slideways alternately and a construction
method thereof. The device includes steel slideways (2) respectively provided on each
frame column (1) and movable steel brackets provided on opposite side surfaces of
the frame column (1). The movable steel bracket includes an upper fixed bracket (3)
and a lower lifting bracket (4). The upper fixed bracket (2) is fixed to the frame
column (1), and the lower lifting bracket (4) is hung on the steel slideway (2). The
lower lifting bracket (4) is provided thereon with a jack (5). The bottom of the jack
(5) is mounted at the top of the lower lifting bracket (4), and the top of the jack
(5) abuts against the bottom of the upper fixed bracket (3). The construction method
of using the device can expand a usable space under the premise of ensuring the original
appearance of a building, with a short construction period and low costs. |
TECHNICAL FIELD
[0001] The present invention belongs to technical field of story addition of buildings, in particular applies to story-adding reconstruction of multi-story and high-rise buildings, and relates to a building story-adding device, in particular to a device for jacking and adding a story of a building with high-strength concrete columns and steel slideways alternately and a construction method thereof.
BACKGROUND TECHNOLOGY
[0002] With the growth of the construction industry, the design philosophy of story addition of buildings has attracted wide attention in the modern society. Story addition boasts relatively low land occupation, small investment and fast construction speed and a rapid solution to housing shortage, which makes it quite suitable for China's national conditions. Therefore, in recent years, China has carried out a large number of story additions for old houses, and achieved excellent economic benefits.
[0003] At present, story addition is a more common building renovation method. The traditional story addition method is to build a new story directly on the top of the existing structure, which has the disadvantages of long construction period, high cost and adverse impact on the surrounding environment. Meanwhile, due to the complexity of the design and construction of story addition, a number of accidents have occurred across China, some of which have caused heavy casualties and economic losses.
SUMMARY
[0004] The present invention aims to provide a device for jacking and adding a story of a building with high-strength concrete columns and steel slideways alternately and a construction method thereof in order to overcome the shortcomings of the existing story addition of buildings, such as long construction period, high cost and accident-prone characteristics.
[0005] In order to achieve the above objective, the present invention adopts a technical solution as follows: a device for jacking and adding a story of a building with high-strength concrete columns and steel slideways alternately, including steel slideways respectively provided on each frame column and movable steel brackets provided on opposite side surfaces of the frame column, where the movable steel bracket includes an upper fixed bracket and a lower lifting bracket; the upper fixed bracket is fixed to the frame column, and the lower lifting bracket is hung on the steel slideway; the lower lifting bracket is provided thereon with a jack; the bottom of the jack is mounted at the top of the lower lifting bracket, and the top of the jack abuts against the bottom of the upper fixed bracket.
[0006] The steel slideway includes two channel-shaped steel plates arranged longitudinally along opposite sides of the frame column; channels of the two channel-shaped steel plates face the frame column; the two channel-shaped steel plates are connected by detachable batten plates.
[0007] An upper part of the channel of the channel-shaped steel plate is provided with a thickening plate, and a lower part of the channel of the channel-shaped steel plate is provided with a stiffening rib.
[0008] Both sides of the upper part of the channel of the channel-shaped steel plate are respectively provided with reserved bolt holes.
[0009] A telescopic steel support is provided between two adjacent frame columns; a top end of the telescopic steel support is connected to an upper part of one frame column, and a bottom end of the telescopic steel support is connected to a lower part of the other frame column.
[0010] The telescopic steel support includes a large inclined rod and a small oblique rod; a lower part of the large inclined rod is provided with a sleeve slot; the lower part of the large inclined rod is connected to an upper part of the small inclined rod by a sleeve; the sleeve is clamped with the sleeve slot at the lower part of the large inclined rod; an internal thread of an inner cylinder at a lower part of the sleeve is engaged with a thread on the small inclined rod.
[0011] A construction method of using a device for jacking and adding story of a building with high-strength concrete columns and steel slideways alternately, including the following steps: Step 1: excavate from a ground of a frame column to a top surface of a foundation; mount a steel slideway from the bottom of each frame column below the ground to a predetermined cut-off position of the frame column; set up a concrete form with a certain height from the top surface of the foundation at the bottom of the frame column; make a reinforcement cage in the concrete form, and embedding a steel bar into a top bearing platform of the foundation; pouring concrete in the concrete form to form a concrete enclosure after setting and hardening, so as to enclose the frame column and the steel slideway by the concrete enclosure; Step 2: calculate a displacement to jack for each frame column of the building; Step 3: hang a lower lifting bracket on the steel slideway; mount a jack on the lower lifting bracket; fix an upper fixed bracket with the frame column so that the top of the jack abuts against the bottom of the upper fixed bracket, where jacks on opposite side surfaces of each frame column form a jack group; Step 4: perform wire sawing at the predetermined cut-off position of the frame column until the frame column is completely cut off; Step 5: connect a long steel slideway to a top surface of a second story; synchronously lift the jack group of each frame column according to on-site synchronous instructions; control a displacement of each jack group, so that an upper part of the cut-off frame column is lifted along the steel slideway, and a cut-off surface of the frame column is kept within a constraint of the steel slideway; insert a prefabricated concrete block under the frame column after a certain distance of lift; unload the jacks, and place a prefabricated concrete block under the jacks; again, synchronously operate the jack group of each frame column according to on-site synchronous instructions to lift a certain distance, insert a prefabricated concrete block under the frame column, unload the jacks, and place a prefabricated concrete block under the jacks; pour the prefabricated concrete block within the lifted height together with the steel slideway into a concrete-filled steel tube column after a certain height of lift; remove the lower lifting bracket and the jack thereon, and take away the prefabricated concrete block under the jack; Step 6: connect a long steel slideway to the top surface of the second story; re-hang the lower lifting bracket on the steel slideway above the concrete-filled frame column; mounting the jack on the lower lifting bracket so that the top of the jack abuts against the bottom of the upper fixed bracket; Step 7: repeat steps 5 and 6 until the upper part of the cut-off frame column is lifted to a specified height and the steel slideway is extended to the top surface of the second story; and Step 8: remove the upper fixed bracket, the lower lifting bracket and the jacks; fill a gap in the steel slideway to fully clad the frame column with steel, so as to form a permanent load-bearing concrete-filled steel tube column; add a beam and a slab of a story structure at a design elevation, thereby completing the jacking and story adding of the building.
[0012] Step 3 further includes: Place a telescopic steel support between two adjacent frame columns, and connect a top end of the telescopic steel support to a top part of one frame column and a bottom end of the telescopic steel support to a lower part of the other frame column.
[0013] In Step 5, when the frame column is jacked to a certain distance, a steel block is inserted under the frame column; after the frame column is jacked to a certain distance, the steel block is taken out and a prefabricated concrete block is inserted.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
The present invention increases the space at the bottom of the building, provides the possibility to renovate facilities such as parking lots and garages, and greatly improves the use value of the building. The present invention has the advantages of short construction period, high reusability of components and low cost. In addition, for historical buildings that need to be protected, the jacking and story adding technology of the present invention can expand the useable space on the premise of ensuring the original appearance of the building.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015]
FIG. 1 is a structural view of a device according to the present disclosure.
FIG. 2 is a structural view of a steel slideway according to the present disclosure.
FIG. 3 is a lateral view of the steel slideway according to the present disclosure.
FIG. 4 is a sectional view of an upper part of the steel slideway according to the present disclosure.
FIG. 5 is a sectional view of a lower part of the steel slideway according to the present disclosure.
FIG. 6 is a structural view of a telescopic steel support according to the present disclosure.
FIG. 7 is a diagram showing a first process of a construction method according to the present disclosure.
FIG. 8 is a diagram showing a second process of the construction method according to the present disclosure.
FIG. 9 is a diagram showing a third process of the construction method according to the present disclosure.
FIG. 10 is a diagram showing a fourth process of the construction method according to the present disclosure.
FIG. 11 is a diagram showing a fifth process of the construction method according to the present disclosure.
FIG. 12 is a diagram showing a sixth process of the construction method according to the present disclosure.
FIG. 13 is a diagram showing a seventh process of the construction method according to the present disclosure.
[0016] Reference Numerals: 1. frame column; 2. steel slideway; 3. upper fixed bracket; 4. lower lifting bracket; 5. jack; 6. channel-shaped steel plate; 7. detachable batten plate; 8. telescopic steel support; 9. large inclined rod; 10. small inclined rod; 11. sleeve slot; 12. sleeve; 13. thickening plate; 14. stiffening rib; 15. reserved bolt hole; 16. foundation; 17. concrete enclosure; and 18. prefabricated concrete block.
DETAILED DESCRIPTION
[0017] The present invention is described in further detail below with reference to the accompanying drawings and specific implementations.
[0018] Referring to FIG. 1, a device for jacking and adding a story of a building with high-strength concrete columns and steel slideways alternately includes steel slideways 2 respectively provided on each frame column 1 and movable steel brackets provided on opposite side surfaces of the frame column 1. The movable steel bracket includes an upper fixed bracket 3 and a lower lifting bracket 4. The upper fixed bracket 2 is fixed to the frame column 1, and the lower lifting bracket 4 is hung on the steel slideway 2. The lower lifting bracket 4 is provided thereon with a jack 5. The bottom of the jack 5 is mounted at the top of the lower lifting bracket 4, and the top of the jack 5 abuts against the bottom of the upper fixed bracket 3.
[0019] Referring to FIGS. 1 to 5, the steel slideway 2 includes two channel-shaped steel plates 6 arranged longitudinally along opposite sides of the frame column 1. Channels of the two channel-shaped steel plates 6 face the frame column 1. The two channel-shaped steel plates 6 are connected by detachable batten plates 7. The two channel-shaped steel plates 6 are respectively located on the same side of the frame column 1 as the movable steel brackets on the opposite side surfaces of the frame column 1; the lower lifting bracket 4 on the same side is hung on the channel-shaped steel plates 6. Further, an upper part of the channel of the channel-shaped steel plate 6 is provided with a thickening plate 13, and a lower part of the channel of the channel-shaped steel plate 6 is provided with a stiffening rib 14. Both sides of the upper part of the channel of the channel-shaped steel plate 6 are respectively provided with reserved bolt holes 15, and the lower lifting bracket 4 is hung on the corresponding channel-shaped steel plate 6 through bolts via the reserved bolt holes 15.
[0020] Referring to FIG. 6, a telescopic steel support 8 is provided between two adjacent frame columns 1. A top end of the telescopic steel support 8 is connected to an upper part of one frame column 1, and a bottom end of the telescopic steel support 8 is connected to a lower part of the other frame column 1. Specifically, the telescopic steel support 8 includes a large inclined rod 9 and a small oblique rod 10. A lower part of the large inclined rod 9 is provided with a sleeve slot 11. The lower part of the large inclined rod 9 is connected to an upper part of the small inclined rod 10 by a sleeve 12. The sleeve 12 is clamped with the sleeve slot 11 at the lower part of the large inclined rod 9. An internal thread of an inner cylinder at a lower part of the sleeve 12 is engaged with a thread on the small inclined rod 10.
[0021] Referring to FIGS. 7 to 13, a construction method of using a device for jacking and adding a story of a building with high-strength concrete columns and steel slideways alternately includes the following steps:
Step 1: Excavate from a ground of a frame column 1 to a top surface of a foundation 16; mount a steel slideway 2 from the bottom of each frame column 1 below the ground to a predetermined cut-off position of the frame column 1; set up a concrete form with a certain height from the top surface of the foundation 16 at the bottom of the frame column 1; make a reinforcement cage in the concrete form, and embed a steel bar into a top bearing platform 16 of the foundation; pour concrete in the concrete form to form a concrete enclosure 17 after setting and hardening, so as to enclose the frame column 1 and the steel slideway 2 by the concrete enclosure 17.
Step 2: Calculate a displacement to jack for each frame column 1 of the building.
Step 3: Hang a lower lifting bracket 4 on the steel slideway 2; mount a jack 5 on the lower lifting bracket 4; fix an upper fixed bracket 3 with the frame column 1 so that the top of the jack 5 abuts against the bottom of the upper fixed bracket 3, where jacks 5 on opposite side surfaces of each frame column 1 form a jack group.
Step 4: Perform wire sawing at the predetermined cut-off position of the frame column 1 until the frame column 1 is completely cut off.
Step 5: Connect a long steel slideway 2 to a top surface of a second story; synchronously lift the jack 5 group of each frame column 1 according to on-site synchronous instructions; control a displacement of each jack 5 group, so that an upper part of the cut-off frame column 1 is lifted along the steel slideway 2, and a cut-off surface of the frame column 1 is kept within a constraint of the steel slideway 2; insert a prefabricated concrete block 18 under the frame column 1 after a certain distance of lift, unload the jacks 5, and place a prefabricated concrete block 18 under the jacks 5; again, synchronously operate the jack 5 group of each frame column 1 according to on-site synchronous instructions to lift a certain distance, insert a prefabricated concrete block 18 under the frame column 1, unload the jacks 5, and place a prefabricated concrete block 18 under the jacks 5, where the distance of lift is a modular stroke of the prefabricated concrete block 18, that is, a height of the prefabricated concrete block 18, which is generally 150 mm; the jack 5 must be unloaded after it lifts a distance of 200 mm, so a lifting stroke of the jack 5 is set to be the same as the height of the prefabricated concrete block 18; pour the prefabricated concrete block 18 within the lifted height together with the steel slideway 2 into a concrete-filled steel tube column after a certain height of lift, remove the lower lifting bracket and the jack 5 thereon, and take away the prefabricated concrete block 18 under the jack 5, where the certain height of lift is determined by a height required for the fixing lower lifting bracket 4, that is, a height required for fixing the lower lifting bracket 4 on the steel slideway 2; usually, this lifting height is taken as a total height of several prefabricated concrete blocks 18, which is generally a modular height of 6 prefabricated concrete blocks 18.
Step 6: Connect a long steel slideway 2 to the top surface of the second story; re-hang the lower lifting bracket 4 on the steel slideway 2 above the concrete-filled frame column 1; mount the jack 5 on the lower lifting bracket 4 so that the top of the jack 5 abuts against the bottom of the upper fixed bracket 3.
Step 7: Repeat Steps 5 and 6 until the upper part of the cut-off frame column 1 is lifted to a specified height and the steel slideway 2 is extended to the top surface of the second story.
Step 8: Remove the upper fixed bracket 3, the lower lifting bracket 4 and the jacks 5; fill a gap in the steel slideway 2 to fully clad the frame column 1 with steel, so as to form a permanent load-bearing concrete-filled steel tube column; add a beam and a slab of a story structure at a design and bottom elevation, thereby completing the jacking and story adding of the building.
[0022] Specifically, Step 3 further includes: place a telescopic steel support 8 between two adjacent frame columns 1, and connect a top end of the telescopic steel support 8 to a top part of one frame column 1 and a bottom end of the telescopic steel support 8 to a lower part of the other frame column 1. The telescopic steel support 8 expands and contracts as the frame column 1 is lifted, which provides lateral support and constraint during a lifting process.
[0023] Specifically, because a prefabricated concrete block 18 is at least 150 mm high, when the lifting height is within 150 mm, the prefabricated concrete block 18 cannot be inserted under the frame column 1, so the frame column 1 is suspended and unstable. Therefore, in Step 5, when the frame column 1 is jacked to a certain distance, a steel block is inserted under the frame column 1, and after the frame column 1 is jacked to a certain distance, the steel block is taken out and a prefabricated concrete block 18 is inserted. That is, the steel block is inserted, and taken out when the lifted height reaches 150 mm; then the prefabricated concrete block 18 is inserted.
[0024] Referring to FIGS. 1 to 13, the present invention increases the space at the bottom of the building, provides the possibility to renovate facilities such as parking lots and garages, and greatly improves the use value of the building. The present invention has the advantages of short construction period, high reusability of components and low cost. In addition, for historical buildings that need to be protected, the jacking and story adding technology of the present invention can expand the useable space on the premise of ensuring the original appearance of the building.
[0025] The present invention is described in further detail above with reference to the specific and preferred implementation, but the description should not be construed as a limitation to the specific implementation of the present invention. For those of ordinary skill in the technical field to which the present invention belongs, several simple deductions or substitutions may be made without departing from the concept of the present invention, but such deductions or substitutions should all be regarded as belonging to the protection scope of the present invention.
step 1: excavating from a ground of a frame column (1) to a top surface of a foundation (16); mounting a steel slideway (2) from the bottom of each frame column (1) below the ground to a predetermined cut-off position of the frame column (1); setting up a concrete form with a certain height from the top surface of the foundation (16) at the bottom of the frame column (1); making a reinforcement cage in the concrete form, and embedding a steel bar into a top bearing platform (16) of the foundation; pouring concrete in the concrete form to form a concrete enclosure (17) after setting and hardening, so as to enclose the frame column (1) and the steel slideway (2) by the concrete enclosure (17);
step 2: calculating a displacement to jack for each frame column (1) of the building;
step 3: hanging a lower lifting bracket (4) on the steel slideway (2); mounting a jack (5) on the lower lifting bracket (4); fixing an upper fixed bracket (3) with the frame column (1) so that the top of the jack (5) abuts against the bottom of the upper fixed bracket (3), wherein jacks (5) on opposite side surfaces of each frame column (1) form a jack group;
step 4: performing wire sawing at the predetermined cut-off position of the frame column (1) until the frame column (1) is completely cut off;
step 5: connecting a long steel slideway (2) to a top surface of a second story; synchronously lifting the jack (5) group of each frame column (1) according to on-site synchronous instructions; controlling a displacement of each jack (5) group, so that an upper part of the cut-off frame column (1) is lifted along the steel slideway (2), and a cut-off surface of the frame column (1) is kept within a constraint of the steel slideway (2); inserting a prefabricated concrete block (18) under the frame column (1) after a certain distance of lift; unloading the jacks (5), and placing a prefabricated concrete block (18) under the jacks (5); again, synchronously operating the jack (5) group of each frame column (1) according to on-site synchronous instructions to lift a certain distance, inserting a prefabricated concrete block (18) under the frame column (1), unloading the jacks (5), and placing a prefabricated concrete block (18) under the jacks (5); pouring the prefabricated concrete block (18) within the lifted height together with the steel slideway (2) into a concrete-filled steel tube column after a certain height of lift; removing the lower lifting bracket (4) and the jack (5) thereon, and taking away the prefabricated concrete block (18) under the jack (5);
step 6: connecting a long steel slideway (2) to the top surface of the second story; re-hanging the lower lifting bracket (4) on the steel slideway (2) above the concrete-filled frame column (1); mounting the jack (5) on the lower lifting bracket (4) so that the top of the jack (5) abuts against the bottom of the upper fixed bracket (3);
step 7: repeating steps 5 and 6 until the upper part of the cut-off frame column (1) is lifted to a specified height and the steel slideway (2) is extended to the top surface of the second story; and
step 8: removing the upper fixed bracket (3), the lower lifting bracket (4) and the jacks (5); filling a gap in the steel slideway (2) to fully clad the frame column (1) with steel, so as to form a permanent load-bearing concrete-filled steel tube column; adding a beam and a slab of a story structure at a design elevation, thereby completing the jacking and story adding of the building.
Amended claims under Art. 19.1 PCT
the steel slideway (2) comprises two channel-shaped steel plates (6) arranged longitudinally along opposite sides of the frame column (1); channels of the two channel-shaped steel plates (6) face the frame column (1); the two channel-shaped steel plates (6) are connected by detachable batten plates (7);
a telescopic steel support (8) is provided between two adjacent frame columns (1); a top end of the telescopic steel support (8) is connected to an upper part of one frame column (1), and a bottom end of the telescopic steel support (8) is connected to a lower part of the other frame column (1);
the telescopic steel support (8) comprises a large inclined rod (9) and a small oblique rod (10); a lower part of the large inclined rod (9) is provided with a sleeve slot (11); the lower part of the large inclined rod (9) is connected to an upper part of the small inclined rod (10) by a sleeve (12); the sleeve (12) is clamped with the sleeve slot (11) at the lower part of the large inclined rod (9); an internal thread of an inner cylinder at a lower part of the sleeve (12) is engaged with a thread on the small inclined rod (10).
step 1: excavating from a ground of a frame column (1) to a top surface of a foundation (16); mounting a steel slideway (2) from the bottom of each frame column (1) below the ground to a predetermined cut-off position of the frame column (1); setting up a concrete form with a certain height from the top surface of the foundation (16) at the bottom of the frame column (1); making a reinforcement cage in the concrete form, and embedding a steel bar into a top bearing platform (16) of the foundation; pouring concrete in the concrete form to form a concrete enclosure (17) after setting and hardening, so as to enclose the frame column (1) and the steel slideway (2) by the concrete enclosure (17);
step 2: calculating a displacement to jack for each frame column (1) of the building;
step 3: hanging a lower lifting bracket (4) on the steel slideway (2); mounting a jack (5) on the lower lifting bracket (4); fixing an upper fixed bracket (3) with the frame column (1) so that the top of the jack (5) abuts against the bottom of the upper fixed bracket (3), wherein jacks (5) on opposite side surfaces of each frame column (1) form a jack group;
step 4: performing wire sawing at the predetermined cut-off position of the frame column (1) until the frame column (1) is completely cut off;
step 5: connecting a long steel slideway (2) to a top surface of a second story; synchronously lifting the jack (5) group of each frame column (1) according to on-site synchronous instructions; controlling a displacement of each jack (5) group, so that an upper part of the cut-off frame column (1) is lifted along the steel slideway (2), and a cut-off surface of the frame column (1) is kept within a constraint of the steel slideway (2); inserting a prefabricated concrete block (18) under the frame column (1) after a certain distance of lift; unloading the jacks (5), and placing a prefabricated concrete block (18) under the jacks (5); again, synchronously operating the jack (5) group of each frame column (1) according to on-site synchronous instructions to lift a certain distance, inserting a prefabricated concrete block (18) under the frame column (1), unloading the jacks (5), and placing a prefabricated concrete block (18) under the jacks (5); pouring the prefabricated concrete block (18) within the lifted height together with the steel slideway (2) into a concrete-filled steel tube column after a certain height of lift; removing the lower lifting bracket (4) and the jack (5) thereon, and taking away the prefabricated concrete block (18) under the jack (5);
step 6: connecting a long steel slideway (2) to the top surface of the second story; re-hanging the lower lifting bracket (4) on the steel slideway (2) above the concrete-filled frame column (1); mounting the jack (5) on the lower lifting bracket (4) so that the top of the jack (5) abuts against the bottom of the upper fixed bracket (3);
step 7: repeating steps 5 and 6 until the upper part of the cut-off frame column (1) is lifted to a specified height and the steel slideway (2) is extended to the top surface of the second story; and
step 8: removing the upper fixed bracket (3), the lower lifting bracket (4) and the jacks (5); filling a gap in the steel slideway (2) to fully clad the frame column (1) with steel, so as to form a permanent load-bearing concrete-filled steel tube column; adding a beam and a slab of a story structure at a design elevation, thereby completing the jacking and story adding of the building.