Special combined steel formwork for reinforcing column with existing wall

Abstract

The utility model discloses a kind of special combination steel formworks of existing wall body reinforcing column, it is related to building engineering reinforcing construction technical field, to solve the technical problem of current existing wall body reinforcing column enlarged section process construction cost, prone to crack, construction period long, including original concrete column.The utility model is fixed by the design of rigid formwork and fixed structure, when existing wall body reinforcing column enlarged section in reinforcing engineering, L-shaped rigid formwork is respectively arranged between original concrete column and original wall body then column hoop structure is fixed by tension bolt, first, it can be directly completed to existing wall body reinforcing column enlarged section under not removing original wall body, then crack will not be generated between the two, secondly, the dismounting of rigid formwork and fixed structure is reinforced convenient, and shorten construction cycle, and can be used repeatedly, save cost.

Description

Technical Field

[0001] This utility model relates to the field of building reinforcement construction technology, and more specifically, to a special combination steel formwork for reinforcing columns using existing walls. Background Technology

[0002] For the current reinforcement projects involving expanding the cross-section of existing wall reinforcement columns, the traditional method is to reinforce the column after the wall is demolished, and then rebuild the wall after the reinforcement is completed.

[0003] The disadvantages of this process are: 1. Increased construction costs; 2. The replacement wall and column are made of two different materials, which can easily lead to cracks; 3. Long construction period. Through research and repeated experiments, a special combined steel formwork was developed to reinforce the column and enlarge its cross-section without demolishing the wall. Therefore, we propose a special combined steel formwork for reinforcing columns using existing walls. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a special combination steel formwork for reinforcing columns of existing walls, so as to solve the technical problems of high construction cost, easy cracking and long construction period of the current process of enlarging the cross section of reinforcing columns of existing walls.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a special combination steel formwork for reinforcing columns using existing walls, comprising an original concrete column, wherein original walls are distributed in the center of each of the four sides of the original concrete column, and a fixed steel formwork is arranged between adjacent original walls. The fixed steel formwork is attached to the original concrete column, and several sets of fixing structures are arranged between the four sets of fixed steel formwork around the original concrete column. The fixing structures include four sets of column hoop structures, which are respectively attached to the outer sides of the four sets of fixed steel formwork. Symmetrical tie bolts are arranged on the four sides of the interior of the four sets of column hoop structures. The four sets of tie bolts penetrate the corresponding fixed steel formwork and the original wall. Tie bolts are arranged between the ends of the four sets of column hoop structures, and the tie bolts penetrate the corresponding original wall.

[0006] The tie bolt includes a screw rod, and a limit structure and a double-eared nut are arranged sequentially at both ends of the screw rod.

[0007] This utility model, through its designed fixed rigid template and fixing structure, allows for the expansion of the cross-section of existing wall reinforcement columns during reinforcement projects. The L-shaped fixed rigid template is positioned between the original concrete column and the original wall, and the column clamp structure is fixed using tie bolts. Firstly, the expansion of the existing wall reinforcement column cross-section can be completed directly without removing the original wall, thus preventing cracks between the two. Secondly, the fixed rigid template and fixing structure are easy to disassemble and reinforce, shorten the construction period, and can be reused multiple times, saving costs. The tie bolts of this utility model are equipped with a limiting structure, and the tie bolts also have limiting teeth that mate with the limiting grooves in the limiting structure. Both the limiting tooth groove and the limiting tooth groove are inclined, and the inclination direction is consistent with the tightening direction of the double-eared nut. When the two sets of double-eared nuts are tightened by pulling against each other, the corresponding limiting structure will move synchronously until the positioning sleeve of the limiting structure is fixed on the column hoop structure. At this time, the double-eared nut has also completed the pulling and tightening effect. At this time, the double-eared nut can no longer be tightened. Then, the limiting tooth groove of the limiting sleeve in the limiting structure will engage with the limiting tooth of the double-eared nut, thereby limiting the loosening direction of the double-eared nut. This can effectively ensure the stability of the tie bolt fixing the fixed rigid formwork between the original concrete column and the original wall, and further ensure the use effect of the fixed rigid formwork and the fixed structure.

[0008] Preferably, the four sets of tie bolts are arranged in a rectangular pattern, and the two sets of tie bolts in the transverse direction are staggered from the two sets of tie bolts in the longitudinal direction.

[0009] Preferably, the column hoop structure includes an L-shaped double-channel steel, with butt-joint channel steel arranged at both ends of the L-shaped double-channel steel, and through holes corresponding to tie bolts are provided on both the L-shaped double-channel steel and the butt-joint channel steel.

[0010] Preferably, the limiting structure includes a positioning sleeve and a limiting sleeve, the positioning sleeve is fitted onto the screw, the limiting sleeve is fitted onto the positioning sleeve, and the limiting sleeve and the positioning sleeve are elastically connected.

[0011] Preferably, the positioning sleeve includes a main sleeve disc and a docking sleeve disc. The docking sleeve disc is arranged on one side of the main sleeve disc. The limiting sleeve is fitted onto the docking sleeve disc, and several sets of springs are arranged circumferentially between the limiting sleeve and the main sleeve disc. Several sets of limiting posts are arranged circumferentially on the side of the main sleeve disc facing away from the docking sleeve disc. The L-shaped double-channel steel and the docking channel steel are provided with limiting holes corresponding to the limiting posts around the through hole.

[0012] Preferably, the limiting sleeve includes a main sleeve and a mating sleeve. The mating sleeve is arranged on one side of the main sleeve, and a limiting tooth groove is formed on the circumference of the mating sleeve facing away from the main sleeve. The double-ear nut is arranged with limiting teeth corresponding to the limiting tooth groove on the side facing the limiting sleeve. Both the limiting teeth and the limiting tooth groove are arranged at an inclination, and the inclination direction is consistent with the tightening direction of the double-ear nut.

[0013] Preferably, the inner wall of the limiting sleeve is provided with several sets of equidistant limiting blocks, and the docking sleeve is provided with limiting grooves corresponding to the limiting blocks around its circumference, with the limiting blocks located inside the limiting grooves.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, through its designed fixed rigid template and fixing structure, enables the expansion of the cross-section of existing wall reinforcement columns during reinforcement projects. The L-shaped fixed rigid template is arranged between the original concrete column and the original wall, and the column hoop structure is fixed using tie bolts. Firstly, the expansion of the cross-section of the existing wall reinforcement column can be completed directly without demolishing the original wall, thus preventing cracks between them. Secondly, the fixed rigid template and fixing structure are easy to disassemble and reinforce, shorten the construction cycle, and can be reused multiple times, saving costs. This solves the technical problems of high construction costs, easy cracking, and long construction periods associated with current existing wall reinforcement column expansion processes. Therefore, this utility model has the advantage of directly expanding the cross-section of existing wall reinforcement columns without demolishing the original wall.

[0016] 2. The tie bolt of this utility model is equipped with a limiting structure, and the tie bolt is also equipped with limiting teeth that cooperate with the limiting grooves in the limiting structure. Both the limiting teeth and the limiting grooves are inclined, and the inclination direction is consistent with the tightening direction of the double-ear nuts. When the two sets of double-ear nuts are tightened by pulling, the corresponding limiting structure will move synchronously until the positioning sleeve of the limiting structure is fixed on the column hoop structure. At this time, the double-ear nuts have also completed the pulling tightening effect. At this time, the double-ear nuts can no longer be tightened. Then, the limiting groove of the limiting sleeve in the limiting structure will engage with the limiting teeth of the double-ear nuts, thereby limiting the loosening direction of the double-ear nuts. This can effectively ensure the stability of the tie bolt in fixing the shaped steel formwork between the original concrete column and the original wall, and further ensure the use effect of the shaped steel formwork and the fixed structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the fixing structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the column hoop structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the tie bolt structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the double-eared nut structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the limiting structure of this utility model;

[0023] Figure 7 This is a schematic diagram of the positioning sleeve structure of this utility model;

[0024] Figure 8 This is a schematic diagram of the limiting sleeve structure of this utility model.

[0025] Explanation of the labels in the diagram:

[0026] 1. Existing concrete column; 2. Existing wall; 3. Prefabricated steel formwork; 4. Fixed structure; 5. Column hoop structure; 501. L-shaped double-channel steel; 502. Butt joint channel steel; 503. Through hole; 504. Limiting hole; 6. Tie bolt; 7. Screw; 8. Double-eared nut; 801. Limiting tooth; 9. Limiting structure; 10. Positioning sleeve; 1001. Main sleeve disc; 1002. Butt joint disc; 1003. Limiting groove; 1004. Limiting column; 11. Limiting sleeve; 1101. Main sleeve; 1102. Butt joint sleeve; 1103. Limiting tooth groove; 1104. Limiting block; 12. Spring. Detailed Implementation

[0027] like Figures 1 to 8 As shown, this utility model relates to a special combination steel formwork for reinforcing columns using existing walls. It includes an existing concrete column 1, with existing walls 2 distributed around the center of each of the four sides of the column 1. A fixed steel formwork 3 is arranged between adjacent existing walls 2, and the formwork 3 is attached to the existing concrete column 1. Several sets of fixing structures 4 are arranged between the four sets of fixed steel formwork 3 around the existing concrete column 1. The fixing structures 4 include four sets of column hoop structures 5, which are respectively attached to the outer sides of the four sets of fixed steel formwork 3. Symmetrical tie bolts 6 are arranged on all four sides of the interior of the four sets of column hoop structures 5. The four sets of tie bolts 6 penetrate the corresponding fixed steel formwork 3 and the existing wall 2. Tie bolts 6 are arranged between the ends of the four sets of column hoop structures 5, and the tie bolts 6 penetrate the corresponding existing wall 2. The four sets of tie bolts 6 are rectangularly distributed, and the two transverse sets of tie bolts 6 are staggered from the two longitudinal sets of tie bolts 6.

[0028] When expanding the cross-section of an existing wall reinforcement column in a reinforcement project, four sets of prefabricated rigid formwork 3 can be arranged between four sets of existing wall 2 around the original concrete column 1. Then, column hoop structures 5 are arranged on the outside of the four sets of prefabricated rigid formwork 3. The ends of the four sets of column hoop structures 5 are connected by tie bolts 6 to form an integral structure, and the tie bolts 6 pass through the original wall 2, thereby tightening the prefabricated rigid formwork 3 with the four sets of column hoop structures 5. Then, tie bolts 6 are arranged in a rectangle between the four sets of column hoop structures 5, and the tie bolts 6 pass through the corresponding prefabricated rigid formwork 3 and the original wall 2, thereby tightening the four sets of prefabricated rigid formwork 3 again. Thus, the cross-section of the existing wall reinforcement column can be expanded directly without removing the original wall 2, so that no cracks will be generated between the two. Moreover, the prefabricated rigid formwork 3 is easy to disassemble and reinforce through the column hoop structure 5 and tie bolts 6, shortening the construction cycle and allowing for multiple uses, thus saving costs.

[0029] Specifically, the column clamp structure 5 includes an L-shaped double channel steel 501, with butt channel steels 502 arranged at both ends of the L-shaped double channel steel 501. Both the L-shaped double channel steel 501 and the butt channel steel 502 are provided with through holes 503 corresponding to the tie bolts 6. The through holes 503 in the L-shaped double channel steel 501 and the butt channel steel 502 in the column clamp structure 5 facilitate the passage of the bolts 7 in the tie bolts 6.

[0030] In an embodiment of this utility model, the tie bolt 6 includes a screw 7, with a limiting structure 9 and a double-eared nut 8 arranged sequentially at both ends of the screw 7; the limiting structure 9 includes a positioning sleeve 10 and a limiting sleeve 11, the positioning sleeve 10 is fitted onto the screw 7, and the limiting sleeve 11 is fitted onto the positioning sleeve 10, and the limiting sleeve 11 is elastically connected to the positioning sleeve 10; the positioning sleeve 10 includes a main sleeve disc 1001 and a docking sleeve disc 1002, the docking sleeve disc 1002 is arranged on one side of the main sleeve disc 1001, the limiting sleeve 11 is fitted onto the docking sleeve disc 1002, and a plurality of sets of springs 12 are arranged circumferentially at equal intervals between the limiting sleeve 11 and the main sleeve disc 1001, the main sleeve disc 1001 facing away from the docking sleeve disc 1002. A number of sets of limiting posts 1004 are arranged equidistantly in a circle on one side. The L-shaped double channel steel 501 and the butt channel steel 502 are provided with limiting holes 504 corresponding to the limiting posts 1004 around the through hole 503. The limiting sleeve 11 includes a main sleeve 1101 and a butt sleeve 1102. The butt sleeve 1102 is arranged on one side of the main sleeve 1101, and the butt sleeve 1102 is provided with limiting grooves 1103 around the side of the butt sleeve 1102 facing away from the main sleeve 1101. The double ear nut 8 is provided with limiting teeth 801 corresponding to the limiting grooves 1103 on the side of the limiting sleeve 11. The limiting teeth 801 and the limiting grooves 1103 are both arranged at an angle, and the angle direction is consistent with the tightening direction of the double ear nut 8.

[0031] When the two sets of double-eared nuts 8 are tightened by turning them, the corresponding limiting structure 9 will move synchronously until the limiting post 1004 of the main sleeve disc 1001 on the positioning sleeve 10 in the limiting structure 9 is inserted into the limiting hole 504 of the column hoop structure 5. At this time, the double-eared nuts 8 have also completed the tightening effect. At this time, the double-eared nuts 8 cannot be tightened further. Then, the limiting tooth groove 1103 of the limiting sleeve 11 in the limiting structure 9 will engage with the limiting tooth 801 of the double-eared nuts 8, thereby limiting the loosening direction of the double-eared nuts 8. This can effectively ensure the stability of the tie bolt 6 in fixing the shaped rigid template 3 between the original concrete column 1 and the original wall 2, and further ensure the use effect of the shaped rigid template 3 and the fixing structure 4.

[0032] Specifically, the inner wall of the limiting sleeve 11 is provided with several sets of equidistant limiting blocks 1104, and the docking sleeve 1002 is provided with limiting grooves 1003 corresponding to the limiting blocks 1104 around its circumference, and the limiting blocks 1104 are located inside the limiting grooves 1003; with the cooperation of the limiting blocks 1104 and the limiting grooves 1003, the limiting sleeve 11 can be stably fitted onto the positioning sleeve 10, and the rotation of the limiting sleeve 11 can be prevented.

[0033] Working Principle: This embodiment provides a special combination steel formwork for reinforcing columns using existing walls. First, when expanding the cross-section of the existing wall reinforcement column during the reinforcement project, four sets of fixed steel formwork 3 can be arranged between four sets of original wall 2 around the original concrete column 1. Then, column hoop structures 5 are arranged on the outside of the four sets of fixed steel formwork 3. The ends of the four sets of column hoop structures 5 are connected by tie bolts 6 to form an integral structure, and the tie bolts 6 pass through the original wall 2, thereby tightening the four sets of column hoop structures 5 on the fixed steel formwork 3. Then, tie bolts 6 are arranged in a rectangle between the four sets of column hoop structures 5, and the tie bolts 6 pass through the corresponding fixed steel formwork 3 and the original wall 2, thereby tightening the four sets of fixed steel formwork 3 again. Thus, the cross-section of the existing wall reinforcement column can be directly expanded without removing the original wall 2, so that no cracks will be generated between the two. Moreover, the fixed steel formwork 3 is easy to disassemble and reinforce through the column hoop structure 5 and tie bolts 6, shortening the construction cycle and allowing for multiple uses, saving costs.

[0034] Secondly, when the two sets of double-eared nuts 8 are tightened by turning them, the corresponding limiting structure 9 will move synchronously until the limiting post 1004 of the main sleeve disc 1001 on the positioning sleeve 10 in the limiting structure 9 is inserted into the limiting hole 504 of the column hoop structure 5. At this time, the double-eared nuts 8 have also completed the tightening effect. At this time, the double-eared nuts 8 cannot be tightened further. Then, the limiting tooth groove 1103 of the limiting sleeve 11 in the limiting structure 9 will engage with the limiting tooth 801 of the double-eared nuts 8, thereby limiting the loosening direction of the double-eared nuts 8. This can effectively ensure the stability of the tie bolt 6 in fixing the shaped rigid template 3 between the original concrete column 1 and the original wall 2, and further ensure the use effect of the shaped rigid template 3 and the fixing structure 4.

[0035] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A special combination steel formwork for reinforcing columns using existing walls, characterized in that, The original concrete column (1) is surrounded by an original wall (2) on all four sides. A fixed rigid template (3) is arranged between adjacent original walls (2). The fixed rigid template (3) is attached to the original concrete column (1). Several fixed structures (4) are arranged between the four sets of fixed rigid templates (3) around the original concrete column (1). The fixed structure (4) includes four sets of column hoop structures (5). The four sets of column hoop structures (5) are respectively attached to the outside of the four sets of fixed rigid templates (3). Symmetrical tie bolts (6) are arranged on the four sides of the four sets of column hoop structures (5). The four sets of tie bolts (6) penetrate the corresponding fixed rigid template (3) and the original wall (2). Tie bolts (6) are arranged between the ends of the four sets of column hoop structures (5). The tie bolts (6) penetrate the corresponding original wall (2). The tie bolt (6) includes a screw (7), with a limit structure (9) and a double-eared nut (8) arranged sequentially at both ends of the screw (7).

2. The special combined steel formwork for reinforcing columns using existing walls according to claim 1, characterized in that it comprises four sets of... The tie bolts (6) are arranged in a rectangular shape, and the two sets of tie bolts (6) in the horizontal direction are staggered from the two sets of tie bolts (6) in the vertical direction.

3. The special combined steel formwork for reinforcing columns using existing walls according to claim 1, characterized in that, The column hoop structure (5) includes an L-shaped double channel steel (501), with butt channel steel (502) arranged at both ends of the L-shaped double channel steel (501). Both the L-shaped double channel steel (501) and the butt channel steel (502) are provided with through holes (503) corresponding to the tie bolts (6).

4. A special combined steel formwork for reinforcing columns using existing walls, as described in claim 3, is characterized in that... The limiting structure (9) includes a positioning sleeve (10) and a limiting sleeve (11). The positioning sleeve (10) is fitted onto the screw (7), and the limiting sleeve (11) is fitted onto the positioning sleeve (10). The limiting sleeve (11) and the positioning sleeve (10) are elastically connected.

5. A special combined steel formwork for reinforcing columns using existing walls, as described in claim 4, is characterized in that... The positioning sleeve (10) includes a main sleeve disc (1001) and a docking sleeve disc (1002). The docking sleeve disc (1002) is arranged on one side of the main sleeve disc (1001). The limiting sleeve (11) is fitted on the docking sleeve disc (1002). A number of springs (12) are arranged circumferentially between the limiting sleeve (11) and the main sleeve disc (1001). A number of limiting posts (1004) are arranged circumferentially on the side of the main sleeve disc (1001) facing away from the docking sleeve disc (1002). The L-shaped double channel steel (501) and the docking channel steel (502) are provided with limiting holes (504) corresponding to the limiting posts (1004) around the through hole (503).

6. A special combined steel formwork for reinforcing columns using existing walls, as described in claim 5, is characterized in that... The limiting sleeve (11) includes a main sleeve (1101) and a mating sleeve (1102). The mating sleeve (1102) is arranged on one side of the main sleeve (1101), and a limiting tooth groove (1103) is opened around the side of the mating sleeve (1102) facing away from the main sleeve (1101). The double-ear nut (8) is arranged with a limiting tooth (801) corresponding to the limiting tooth groove (1103) on the side facing the limiting sleeve (11). The limiting tooth (801) and the limiting tooth groove (1103) are both arranged at an angle, and the angle direction is consistent with the tightening direction of the double-ear nut (8).

7. A special combined steel formwork for reinforcing columns using existing walls, as described in claim 6, is characterized in that... The inner wall of the limiting sleeve (11) is provided with several sets of equidistant limiting blocks (1104), and the docking sleeve (1002) is provided with a limiting groove (1003) corresponding to the limiting block (1104) around its circumference, and the limiting block (1104) is located inside the limiting groove (1003).

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