Combined reinforcing structure for large-size perforated prefabricated shear wall

Abstract

The utility model discloses a combined reinforcing structure for a large-size holed prefabricated shear wall. The combined reinforcing structure comprises a prefabricated shear wall body, the at least one hole is formed in the prefabricated shear wall body, a connecting beam is arranged above the hole, wall columns are arranged on the two sides of the hole, and the length of the connecting beam is larger than 2 m; the corner supporting rods are arranged at the included angles of the vertical side walls of the hole respectively, one end of each corner supporting rod is fixedly connected with the connecting beam, and the other end of each corner supporting rod is fixedly connected with the wall column; the at least one transverse connecting rod is horizontally arranged and is fixedly connected with all the wall columns respectively; the at least one group of additional ribs are arranged in the prefabricated shear wall body and correspond to the included angle of the side wall of the hole, and each group of additional ribs comprises two parallel additional ribs; by means of the arrangement, the problem that a multi-limb shear wall which is provided with large-size holes and prefabricated together with edge components is prone to deformation and cracking in the links of production, transportation, installation and the like can be effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building structures, and particularly relates to a combined reinforcement structure for a large-size opening precast shear wall. Background Technique

[0002] An assembled building refers to a building that prefabricates components and fittings in a factory and transports them to the building construction site, and is assembled and installed on site through reliable connection methods. Compared with traditional in-situ construction, the construction site of an assembled building does not require a large amount of manpower and material resources. Most building components and members are completed in the production workshop, reducing the loss of building materials and the generation of construction waste, and reducing carbon emissions throughout the building life cycle. It is the construction method that best fits the concept of "carbon neutrality" and conforms to the concepts of green development and sustainable development.

[0003] The disassembly of assembled precast components generally should be carried out at positions with relatively small stress or non-concentrated deformation. At the same time, it should meet environmental conditions and production and construction conditions, and fully consider the limitations of transportation, installation and other links on precast components. It follows the principles of reasonable force, simple connection, convenient construction, few specifications, many combinations, and standardized design, and unifies and reduces the types of component specifications and connection nodes. However, for the disassembly of some precast shear walls in assembled concrete shear wall structures, it is often difficult to disassemble according to the principles of few specifications, many combinations, and standardized design, especially for large-size openings and multi-limb shear walls precast together with edge members.

[0004] Such shear walls with a "冂"-shaped opening are only connected by the coupling beam above the opening, and the opening is relatively large, resulting in poor integrity of the wall body. It is easy to cause problems such as deformation and cracking in the production, transportation, installation and other links. Therefore, for such precast shear wall components, a convenient and effective reinforcement structure needs to be proposed. Content of the Utility Model

[0005] The utility model provides a combined reinforcement structure for a large-size opening precast shear wall, aiming to solve the problem that the shear wall with a "冂"-shaped opening is prone to deformation and cracking in the production, transportation, installation and other links.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A combined reinforcement structure for a large-size opening precast shear wall, comprising: a precast shear wall body;

[0008] At least one opening opened on the precast shear wall body, a coupling beam is arranged above the opening, wall limbs are arranged on both sides of the opening, and the length of the coupling beam is greater than 2m;

[0009] Corner support rods are respectively arranged at the angles between the vertical side walls of the opening, one end of each corner support rod is fixedly connected to the connecting beam, and the other end is fixedly connected to the wall limb;

[0010] At least one transverse connecting rod, which is horizontally arranged and fixedly connected to all the wall limbs respectively;

[0011] At least one group of additional reinforcements is arranged in the prefabricated shear wall and corresponds to the angle of the side wall of the opening, and each group of additional reinforcements includes two additional reinforcements arranged in parallel.

[0012] Furthermore, the additional rib includes an inclined edge, a vertical edge is provided at the lower end of the inclined edge, a horizontal edge is provided at the upper end of the inclined edge, and the lengths of the vertical edge and the horizontal edge are greater than 15 times the diameter of the additional rib.

[0013] Furthermore, the distance between two parallel additional ribs in each group of additional ribs is 50 mm.

[0014] Furthermore, the angle between the corner support rod and the horizontal direction is 45°, and the corner support rod is a channel steel.

[0015] Furthermore, the distance from the connection point of the corner support rod and the connecting beam to the adjacent wall limb or the distance from the connection point of the corner support rod and the wall limb to the connecting beam is the minimum of one-third of the length of the connecting beam and one-third of the length from the bottom of the connecting beam to the bottom of the wall limb.

[0016] Furthermore, the distance between the connection points of the two corner support rods and the connecting beam in the opening is no more than twice the distance from the connection points of the corner support rods and the connecting beam to the adjacent wall limbs, the number of the transverse connecting rods is one, and the distance between the transverse connecting rod and the bottom surface of the wall limb is one third of the distance from the bottom surface of the connecting beam to the bottom surface of the wall limb.

[0017] Furthermore, the distance between the connection point of the two corner support rods and the connecting beam in the opening is greater than twice the distance from the connection point of the corner support rods and the connecting beam to the adjacent wall limb, the number of the transverse connecting rods is two, and the distance between the two transverse connecting rods and the bottom surface of the wall limb is 200 mm and half of the distance from the bottom surface of the connecting beam to the bottom surface of the wall limb, respectively.

[0018] Furthermore, the length of the wall limb is not greater than 1 m, and the transverse connecting rod is fixedly connected to the wall limb via a fixing point respectively, and the fixing point is located on the vertical center line of the matching side wall of the wall limb and the transverse connecting rod.

[0019] Furthermore, the length of the wall limb is greater than 1m, and the transverse connecting rod is fixedly connected to the wall limb via two fixing points respectively, and the two fixing points are respectively located on the vertical trisection lines of the wall limb and the transverse connecting rod cooperating with the side wall.

[0020] Furthermore, the corner support rod is fixedly connected to the connecting beam and the wall limb by a first bolt and a first steel gasket, the transverse connecting rod is fixedly connected to the wall limb by a second bolt and a second steel gasket, and a plurality of embedded sleeves are provided on the connecting beam and the wall limb, and the embedded sleeves are used to cooperate with the first bolt or the second bolt.

[0021] Compared with the prior art, the utility model has the following technical effects:

[0022] 1. The utility model discloses a combined reinforcement structure for a prefabricated shear wall with large-sized openings, which prevents cracking due to stress concentration by configuring additional reinforcement at the weak position of the wall, namely, the corner of the opening. Furthermore, since the opening is only connected by a connecting beam, the overall connection stability is poor, and a corner support is arranged at the corner of the opening to improve the local stability and rigidity of the prefabricated shear wall. Finally, a transverse connecting rod is arranged in the prefabricated shear wall to improve the overall stability of the prefabricated shear wall.

[0023] 2. The combined reinforcement structure for prefabricated shear walls with large-sized openings described in the utility model is fixedly connected with bolts through embedded sleeves, and the corner supports and transverse connecting rods involved can be reused for the same type of prefabricated shear walls, avoiding waste of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of a combined reinforcement structure for a prefabricated shear wall with large-sized openings described in the utility model;

[0025] Figure 2 It is a front view of a combined reinforcement structure for a prefabricated shear wall with large-sized openings described in the utility model;

[0026] Figure 3 This is a schematic diagram of a corner support structure of a combined reinforcement structure for a prefabricated shear wall with a large opening according to the utility model;

[0027] Figure 4 This is a schematic diagram of the installation of a transverse connecting rod for a combined reinforcement structure of a prefabricated shear wall with a large opening according to the utility model;

[0028] Figure 5 It is a schematic diagram of the internal structure of a combined reinforcement structure for a prefabricated shear wall with large-sized openings described in the utility model;

[0029] Figure 6 This is a schematic diagram of an additional reinforcement structure for a combined reinforcement structure of a prefabricated shear wall with a large opening according to the utility model;

[0030] Figure 7This is a schematic diagram of the arrangement of additional reinforcement bars for a combined reinforcement structure of a prefabricated shear wall with large openings described in the utility model;

[0031] Figure 8 This is a schematic diagram of a single-hole shear wall for a combined reinforcement structure of a prefabricated shear wall with a large opening as described in the utility model;

[0032] Fig. 9 The utility model is a schematic diagram of the arrangement of a single-hole shear wall support structure for a combined reinforcement structure of a prefabricated shear wall with large-size openings.

[0033] In the figure: 1. connecting beam; 2. opening; 3. wall limb; 4. corner support rod; 5. first bolt; 6. first steel gasket; 7. embedded sleeve; 8. transverse connecting rod; 9. second steel gasket; 10. second bolt; 11. additional reinforcement; 1101. inclined edge; 1102. vertical edge; 1103. horizontal edge. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the application and with reference to the accompanying drawings.

[0035] like Figure 1 , Figure 2 , Figure 8 , Fig. 9 As shown, a combined reinforcement structure for a prefabricated shear wall with large-sized openings comprises: a prefabricated shear wall;

[0036] At least one opening 2 is opened on the prefabricated shear wall, a connecting beam 1 is located above the opening 2, wall members 3 are located on both sides of the opening 2, and the length of the connecting beam 1 is greater than 2m;

[0037] Corner support rods 4 are respectively arranged at the angles between the vertical side walls of the opening 2, one end of the corner support rod 4 is fixedly connected to the connecting beam 1, and the other end is fixedly connected to the wall limb 3;

[0038] At least one transverse connecting rod 8, which is horizontally arranged and fixedly connected to all the wall limbs 3;

[0039] At least one group of additional reinforcements 11 is arranged in the prefabricated shear wall and corresponds to the angle of the side wall of the opening 2, and each group of additional reinforcements 11 includes two additional reinforcements 11 arranged in parallel.

[0040] like Figure 6-7As shown, the additional rib 11 includes an inclined edge 1101, a vertical edge 1102 is provided at the lower end of the inclined edge 1101, and a horizontal edge 1103 is provided at the upper end of the inclined edge 1101. The lengths of the vertical edge 1102 and the horizontal edge 1103 are greater than 15 times the diameter of the additional rib 11.

[0041] like Figure 6-7 As shown, the distance between two parallel additional ribs 11 in each group of additional ribs 11 is 50 mm.

[0042] The additional reinforcement 11 is used to prevent the corners of the prefabricated shear wall opening 2 from cracking due to stress concentration during hoisting. The additional reinforcement 11 is arranged when the reinforcement construction of the prefabricated shear wall component is completed.

[0043] like Figure 2-3 As shown, the angle between the corner support rod 4 and the horizontal direction is 45°, and the corner support rod 4 is a channel steel.

[0044] like Figure 2 and Fig. 9 As shown, the distance from the connection point of the corner support rod 4 and the connecting beam 1 to the adjacent wall limb 3 or the distance from the connection point of the corner support rod 4 and the wall limb 3 to the connecting beam 1 is the minimum value of one-third of the length of the connecting beam 1 and one-third of the length from the bottom of the connecting beam 1 to the bottom of the wall limb 3.

[0045] The corner support rods 4 are provided to improve the local stability and rigidity of the corners of the prefabricated shear wall.

[0046] like Figure 2 As shown, in a specific embodiment, the distance between the connection points of the two corner support rods 4 in the opening 2 and the connecting beam 1 is not greater than twice the distance from the connection points of the corner support rods 4 and the connecting beam 1 to the adjacent wall limb 3, the number of the transverse connecting rod 8 is one, and the distance between the transverse connecting rod 8 and the bottom surface of the wall limb 3 is one third of the distance from the bottom surface of the connecting beam 1 to the bottom surface of the wall limb 3.

[0047] like Fig. 9 As shown, in a specific embodiment, the distance between the connection point of the two corner support rods 4 and the connecting beam 1 in the opening 2 is greater than twice the distance from the connection point of the corner support rods 4 and the connecting beam 1 to the adjacent wall limb 3, the number of the transverse connecting rods 8 is two, and the distance between the two transverse connecting rods 8 and the bottom surface of the wall limb 3 is 200 mm and half of the distance from the bottom surface of the connecting beam 1 to the bottom surface of the wall limb 3, respectively.

[0048] like Figure 2As shown, in a specific embodiment, the length of the wall limb 3 is not more than 1m, and the transverse connecting rod 8 is fixedly connected to the wall limb 3 through a fixed point respectively, and the fixed point is located on the vertical center line of the matching side wall of the wall limb 3 and the transverse connecting rod 8.

[0049] like Fig. 9 As shown, in a specific embodiment, the length of the wall limb 3 is greater than 1m, and the transverse connecting rod 8 is fixedly connected to the wall limb 3 through two fixing points, respectively. The two fixing points are respectively located on the vertical trisection lines of the matching side walls of the wall limb 3 and the transverse connecting rod 8.

[0050] The provision of the transverse connecting rods 8 enables an effective connection to be formed between the wall members 3, thereby enhancing the overall stability of the prefabricated shear wall.

[0051] like Figure 3-4 As shown, the corner support rod 4 is fixedly connected to the connecting beam 1 and the wall limb 3 by a first bolt 5 and a first steel gasket 6, the transverse connecting rod 8 is fixedly connected to the wall limb 3 by a second bolt 9 and a second steel gasket 10, and a plurality of embedded sleeves 7 are provided on the connecting beam 1 and the wall limb 3, and the embedded sleeves 7 are used to cooperate with the first bolt 5 or the second bolt 10.

[0052] In addition, as this type of prefabricated component itself has an asymmetric structure, in addition to the structural design of the prefabricated component itself, a reasonable lifting point design is also particularly critical. In order to avoid local stress concentration in the wall due to unbalanced force during the lifting process, which may lead to lifting failure or local cracking of the wall, information-based monitoring methods are used during the installation process to monitor the shape of the wall before and after lifting and installation, so as to compare and analyze the integrity and safety of the prefabricated components after installation.

[0053] In a specific implementation, from the perspective of the convenience of hoisting construction and force balance, firstly, a component model is established through BIM, and the model is imported into CAD to find the center of gravity position of the component, so as to allocate the position of the hanging point, and try to make each hanging point evenly stressed and in a balanced state;

[0054] Furthermore, from the perspective of the morphological changes of the hoisting structure, a high-precision 3D scanner is used to measure the morphological changes of the prefabricated components before and after hoisting to determine the integrity and safety of the structure;

[0055] By comprehensively considering the structural design angle of the prefabricated components themselves, the convenience of hoisting construction and the angle of force balance, as well as the angle of change in the hoisting structure shape, it is possible to effectively avoid the problem of wall deformation and cracking in the production, transportation, installation and other links of such prefabricated components, and to conduct timely monitoring and feedback on the wall deformation and cracking problems, further ensuring the integrity and safety of the prefabricated components before and after construction.

[0056] Based on the technical solution proposed by this utility model patent, the specific implementation steps in the actual production and installation process are given as follows:

[0057] S1, determine the reinforcement measures of the prefabricated shear wall, complete the in-depth design of the corresponding measures, and give the specifications and models of the embedded sleeves 7, bolts, steel washers, corner support rods 4 and transverse connecting rods 8.

[0058] S2, based on the detailed drawings, uses BIM software to build a solid model of the prefabricated components, and imports it into CAD to find the center of gravity of the model components, so as to allocate the hanging points.

[0059] S3, when the prefabricated shear wall reinforcement is installed, the embedded sleeve 7 is installed at a fixed position.

[0060] S4, when the prefabricated shear wall is demoulded, the corner support rods 4 and the transverse connecting rods 8 are installed respectively, and are connected and fixed at the embedded sleeves 7 with bolts, and steel washers are placed on the bolts to make the support points and the fixing points connected and tightened.

[0061] S5, when the prefabricated shear wall is transported to the construction site and hoisted and installed, the corner support rods 4 and the transverse connecting rods 8 are removed and returned to the factory for reuse.

[0062] S6, then use cement mortar to seal the holes of the embedded sleeve 7.

[0063] Among them, in S5, during the component installation stage, a high-precision three-dimensional scanner is used to measure the status of the component when it is hoisted and when the installation is completed, and the morphological changes of the structure are compared and analyzed, mainly including the deformation and cracking of the prefabricated components, so as to judge the integrity and safety of the structure.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A combined reinforcement structure for prefabricated shear walls with large openings, characterized in that: include: Precast shear walls; At least one opening (2) is opened on the prefabricated shear wall, a connecting beam (1) is located above the opening (2), wall members (3) are located on both sides of the opening (2), and the length of the connecting beam (1) is greater than 2 m; Corner support rods (4) are respectively arranged at the angles between the vertical side walls of the opening (2), one end of the corner support rod (4) is fixedly connected to the connecting beam (1), and the other end is fixedly connected to the wall limb (3); At least one transverse connecting rod (8), the transverse connecting rod (8) being arranged horizontally and being fixedly connected to all the wall limbs (3) respectively; At least one group of additional reinforcements (11) is arranged in the prefabricated shear wall and corresponds to the angle of the side wall of the opening (2), and each group of additional reinforcements (11) includes two additional reinforcements (11) arranged in parallel.

2. A combined reinforcement structure for a prefabricated shear wall with large openings according to claim 1, characterized in that: The additional rib (11) comprises an inclined edge (1101), a vertical edge (1102) is arranged at the lower end of the inclined edge (1101), a horizontal edge (1103) is arranged at the upper end of the inclined edge (1101), and the lengths of the vertical edge (1102) and the horizontal edge (1103) are greater than 15 times the diameter of the additional rib (11).

3. A combined reinforcement structure for a prefabricated shear wall with large openings according to claim 2, characterized in that: The distance between two parallel additional ribs (11) in each group of additional ribs (11) is 50 mm.

4. The combined reinforcement structure for prefabricated shear walls with large openings according to claim 1, characterized in that: The angle between the corner support rod (4) and the horizontal direction is 45°, and the corner support rod (4) is a channel steel.

5. The combined reinforcement structure for prefabricated shear walls with large openings according to claim 4, characterized in that: The distance from the connection point between the corner support rod (4) and the connecting beam (1) to the adjacent wall limb (3) or the distance from the connection point between the corner support rod (4) and the wall limb (3) to the connecting beam (1) is the minimum value of one third of the length of the connecting beam (1) and one third of the length from the bottom of the connecting beam (1) to the bottom of the wall limb (3).

6. A combined reinforcement structure for a prefabricated shear wall with large openings according to claim 5, characterized in that: The distance between the connection points of the two corner support rods (4) and the connecting beam (1) in the opening (2) is no greater than twice the distance from the connection points of the corner support rods (4) and the connecting beam (1) to the adjacent wall limb (3); the number of the transverse connecting rod (8) is one, and the distance between the transverse connecting rod (8) and the bottom surface of the wall limb (3) is one third of the distance from the bottom surface of the connecting beam (1) to the bottom surface of the wall limb (3).

7. The combined reinforcement structure for prefabricated shear walls with large openings according to claim 5, characterized in that: The distance between the connection point of the two corner support rods (4) and the connecting beam (1) in the opening (2) is greater than twice the distance from the connection point of the corner support rods (4) and the connecting beam (1) to the adjacent wall limb (3); the number of the transverse connecting rods (8) is two, and the distance between the two transverse connecting rods (8) and the bottom surface of the wall limb (3) is 200 mm and half the distance from the bottom surface of the connecting beam (1) to the bottom surface of the wall limb (3), respectively.

8. A combined reinforcement structure for a prefabricated shear wall with large openings according to claim 6 or 7, characterized in that: The length of the wall limb (3) is not greater than 1 m, and the transverse connecting rod (8) is fixedly connected to the wall limb (3) via a fixing point respectively, and the fixing point is located on the vertical center line of the matching side wall of the wall limb (3) and the transverse connecting rod (8).

9. A combined reinforcement structure for a prefabricated shear wall with large openings according to claim 6 or 7, characterized in that: The length of the wall limb (3) is greater than 1 m, and the transverse connecting rod (8) is fixedly connected to the wall limb (3) via two fixing points, respectively. The two fixing points are respectively located on the vertical trisection lines of the matching side walls of the wall limb (3) and the transverse connecting rod (8).

10. The combined reinforcement structure for prefabricated shear walls with large openings according to claim 1, characterized in that: The corner support rod (4) is fixedly connected to the connecting beam (1) and the wall limb (3) via a first bolt (5) and a first steel washer (6); the transverse connecting rod (8) is fixedly connected to the wall limb (3) via a second bolt (10) and a second steel washer (9); a plurality of embedded sleeves (7) are provided on the connecting beam (1) and the wall limb (3); the embedded sleeves (7) are used to cooperate with the first bolt (5) or the second bolt (10).

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