Built-in steel plate buckling-restrained device for steel plate concrete composite shear wall and construction method

Abstract

The invention discloses a buckling-restrained device for a built-in steel plate of a steel plate concrete composite shear wall and a construction method. The buckling-restrained device aims to solve the technical problem that the built-in steel plate is prone to buckling. Comprising a pressing plate used for being installed on a set area of a built-in steel plate of the steel plate and concrete combined shear wall in an attached mode and applying anti-buckling pressure before concrete pouring construction of the steel plate and concrete combined shear wall; and the pressing plate locking device is used for mounting the pressing plate on the set area of the built-in steel plate in an attached manner and applying pre-tightening force to the pressing plate, so that the pressing plate generates anti-buckling pressure on the set area of the built-in steel plate. The pressing plate is mounted on the set area of the built-in steel plate in an attached mode, the pressing plate locking device is used for applying pre-tightening force, effective anti-buckling pressure can be generated on the built-in steel plate, and buckling deformation of the built-in steel plate before and after concrete pouring is prevented. The device is simple in structure and convenient to install.

Description

Technical Field

[0001] The invention relates to a steel plate concrete composite shear wall built-in steel plate anti-buckling device and a construction method. Background Art

[0002] Steel-concrete composite shear walls are high-performance composite structures formed by embedding steel plates in concrete. They offer significant advantages, including high bearing capacity and excellent seismic resistance, and are widely used in high-rise and super-high-rise buildings. However, in actual construction, the following technical difficulties exist in the construction of steel-concrete composite shear walls.

[0003] First, because the internal steel plates are inherently thin and have limited rigidity, they are prone to varying degrees of buckling and deformation before and after concrete pouring. The current industry-wide solution is to use an electric hoist to straighten the internal steel plates if buckling is detected before concrete pouring. However, this method is not only time-consuming and labor-intensive, but also ineffective and fails to fundamentally resolve the problem.

[0004] Secondly, during the installation and lowering of internal steel plates, especially during high-rise construction, they are easily affected by external factors such as strong winds, causing them to swing. This increases installation difficulty and safety risks, and often causes internal steel plates to collide with the steel beams of the building crane. This not only reduces construction efficiency but can also cause additional deformation or damage to the internal steel plates and the building crane.

[0005] Patent publication number CN118007845A provides a toughness-constrained corrugated steel plate shear wall and construction method, using corrugated steel plates to address the buckling problem. Corrugated steel plates require a large amount of material and are complex to manufacture, significantly increasing the construction cost of steel-concrete composite shear walls. Summary of the Invention

[0006] The purpose of the present invention is to provide a built-in steel plate anti-buckling device and a construction method for a steel plate concrete composite shear wall, so as to solve the technical problem that the built-in steel plate is prone to buckling.

[0007] In the first aspect, a buckling prevention device for the built-in steel plate of a steel plate concrete composite shear wall is provided, comprising: a pressure plate for being fitted on a set area of ​​the built-in steel plate of the steel plate concrete composite shear wall before the concrete pouring construction of the steel plate concrete composite shear wall and applying anti-buckling pressure; and a pressure plate locking device for fitting the pressure plate on the set area of ​​the built-in steel plate and applying a pre-tightening force to the pressure plate so that the pressure plate generates anti-buckling pressure on the set area of ​​the built-in steel plate.

[0008] As an optimization and / or instantiation of the built-in steel plate anti-buckling device of the steel plate concrete composite shear wall in the first aspect mentioned above, further: the pressure plate includes a first plywood and a second plywood relatively arranged on both sides of a set area of ​​the built-in steel plate, and the first plywood, the built-in steel plate and the second plywood are locked together by threaded connectors.

[0009] As an optimization and / or instantiation of the built-in steel plate anti-buckling device of the steel plate concrete composite shear wall of the first aspect mentioned above, further: the built-in steel plate is a steel plate with shear studs distributed in an array on the surface; the pressure plate includes a shear stud perforated plate arranged on one side of the set area of ​​the built-in steel plate, and the shear stud perforated plate is distributed with shear stud penetration holes. When the shear stud perforated plate is fitted on the set area of ​​the built-in steel plate, the shear stud penetration holes distributed on the shear stud perforated plate are correspondingly penetrated on different shear studs one by one, and the shear stud perforated plate On the outer surface, a sleeve plug-in anti-rotation structure is provided at the edge of each shear bolt penetration hole; the pressure plate locking device includes a threaded sleeve, a nut and a shear bolt locking device, the threaded sleeve is used to be sleeved on the corresponding shear bolt and one end is inserted into the corresponding sleeve plug-in anti-rotation structure to be circumferentially fixed to the sleeve plug-in anti-rotation structure, the other end of the threaded sleeve is threadedly adapted to be connected with the nut sleeved on the T-head of the corresponding shear bolt, the shear bolt locking device is installed on the nut and is clamped and adapted with the end face of the neck flange of the T-head of the corresponding shear bolt.

[0010] As an optimization and / or instantiation of the built-in steel plate anti-buckling device of the steel plate concrete composite shear wall in the first aspect mentioned above, further: the shear stud locking device includes a plurality of radial bolts arranged circumferentially at intervals on corresponding nuts, the tail ends of these bolts clamp the side walls of the shear studs and contact the end face of the neck flange of the T-shaped head.

[0011] As an optimization and / or instantiation of the built-in steel plate anti-buckling device of the steel plate concrete composite shear wall in the first aspect mentioned above, further: the sleeve plug-in anti-rotation structure is a prismatic protrusion structure with an outer side, and the inner side of one end of the threaded sleeve is adapted to the shape and size of the prismatic protrusion structure.

[0012] As an optimization and / or instantiation of the steel plate anti-buckling device built into the steel plate concrete composite shear wall in the first aspect mentioned above, further: a lifting lug is provided on the shear stud perforated plate.

[0013] As an optimization and / or instantiation of the built-in steel plate anti-buckling device of the steel plate concrete composite shear wall in the first aspect mentioned above, further: the shear stud perforated plate is a strip plate, and the strip plate is provided with shear stud perforation holes arranged at intervals along the length direction of the strip plate.

[0014] As an optimization and / or instantiation of the built-in steel plate anti-buckling device of the steel plate concrete composite shear wall in the first aspect mentioned above, further: the shear stud perforated plate is fitted on the built-in steel plate to form an L-shape, U-shape or Z-shape.

[0015] The second aspect provides a steel plate concrete composite shear wall construction method. Before the concrete pouring construction of the steel plate concrete composite shear wall, the steel plate concrete composite shear wall built-in steel plate anti-buckling device of the first aspect mentioned above is installed on the set area of ​​the built-in steel plate of the steel plate concrete composite shear wall, and then the concrete pouring construction is carried out.

[0016] As an optimization and / or instantiation of the steel plate concrete composite shear wall construction method of the second aspect mentioned above, further: first, the steel plate concrete composite shear wall built-in steel plate anti-buckling devices are installed on different set areas of the built-in steel plate, and then the built-in steel plate is stably lifted from top to bottom to the installation position by using the lugs on the shear studs perforated plates of the built-in steel plate anti-buckling devices of these steel plate concrete composite shear wall, and then the concrete pouring construction is carried out after the concrete pouring mold is assembled.

[0017] The present invention provides a steel plate anti-buckling device for steel plate-concrete composite shear walls. By fitting a pressure plate onto a designated area of ​​the internal steel plate and applying a preload using a pressure plate locking device, the device effectively generates anti-buckling pressure on the internal steel plate, preventing buckling deformation before and after concrete pouring. The device has a simple structure and is easy to install, eliminating the need for straightening via an electric hoist as in existing techniques. Furthermore, compared to solutions using corrugated steel plates, it does not increase steel usage or require complex manufacturing processes, significantly reducing construction costs and improving the quality and efficiency of steel plate-concrete composite shear walls.

[0018] The steel-concrete composite shear wall construction method provided by the present invention effectively prevents buckling of the internal steel plates by installing an anti-buckling device on a designated area of ​​the internal steel plates before concrete pouring. Furthermore, concrete pouring is then carried out. Specifically, the internal steel plates are stably lifted downwards to their installation locations using the lifting lugs on the perforated plates of the shear studs. This significantly reduces the swaying of the internal steel plates caused by external factors such as strong winds, avoids the risk of the internal steel plates striking the steel beams of the building construction machine, and improves the stability and safety of the lifting process.

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages provided by the present invention will be partially given in the following description, partially become apparent from the following description, or be learned through practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings that constitute a part of this specification are used to assist in understanding the present invention. The contents provided in the drawings and the related descriptions in this specification can be used to explain the present invention, but do not constitute improper limitations on the present invention.

[0021] Figure 1 Actual photos of the buckling of built-in steel plates before concrete pouring in a project.

[0022] Figure 2 This is a schematic structural diagram of the built-in steel plate anti-buckling device according to the first embodiment of the present invention.

[0023] Figure 3 Outline drawing of an internal steel plate with shear studs distributed across an existing surface array.

[0024] Figure 4 This is a schematic structural diagram of a built-in steel plate anti-buckling device according to a second embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the usage status of the built-in steel plate anti-buckling device of Example 2 of the present invention.

[0026] Figure 6 for Figure 4 Schematic diagram of the structure of the threaded sleeve.

[0027] Figure 7 for Figure 4 Schematic diagram of the assembly of the threaded sleeve, nut and shear stud locking device.

[0028] Figure 8 This is a cross-sectional view of the built-in steel plate anti-buckling device in use according to the second embodiment of the present invention.

[0029] Figure 9 This is a schematic diagram of a usage method of the built-in steel plate anti-buckling device of Example 2 of the present invention.

[0030] Figure 10 This is a schematic diagram of another usage of the built-in steel plate anti-buckling device of the second embodiment of the present invention.

[0031] Figure 11 This is a schematic diagram of another usage of the built-in steel plate anti-buckling device of the second embodiment of the present invention.

[0032] Figure 12 This is a schematic diagram of another usage of the built-in steel plate anti-buckling device of the second embodiment of the present invention.

[0033] Marked in the figure are: built-in steel plate 1, shear bolt 11, pressure plate 21, pressure plate locking device 22, first clamping plate 211a, second clamping plate 211b, shear bolt perforated plate 212, shear bolt penetration hole 2121, sleeve plug-in anti-rotation structure 2122, lifting ear 2123, threaded sleeve 221, nut 222, shear bolt locking device 223, radial bolt 2231. DETAILED DESCRIPTION

[0034] The present invention is described clearly and completely below with reference to the accompanying drawings. A person skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention with reference to the accompanying drawings, it should be noted that:

[0035] The technical solutions and technical features provided in each section, including the following description, may be combined with each other unless they conflict. In addition, where possible, these technical solutions, technical features, and related combinations may be assigned specific technical themes and protected by relevant patents.

[0036] The embodiments of the present invention involved in the following description are generally only a part of the embodiments rather than all the embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work should fall within the scope of patent protection.

[0037] The terms "include," "comprising," and any variations thereof in this specification, the corresponding claims, and related parts are intended to cover non-exclusive inclusions. Other related terms and units may be reasonably interpreted based on the relevant content provided in this specification.

[0038] Steel plate concrete composite shear wall is a high-performance composite structure formed by embedding steel plates (these steel plates are called built-in steel plates) in concrete. It has significant advantages such as high bearing capacity and good seismic performance, and is widely used in high-rise and super-high-rise buildings.

[0039] Figure 1 This is an actual photo of the buckling of the built-in steel plate before concrete pouring in a certain project. Figure 1 As shown, the portion of the built-in steel plate 1 indicated by the white arrow is significantly deformed. The current solution is to straighten it by pulling it with an electric hoist. However, this method is not only time-consuming and labor-intensive, but also ineffective and cannot fundamentally solve the problem.

[0040] Figure 2 FIG. 1 is a schematic structural diagram of a built-in steel plate anti-buckling device according to embodiment 1 of the present invention. Figure 2 As shown, in order to solve the problem of buckling of the above-mentioned built-in steel plate, the built-in steel plate anti-buckling device includes a pressing plate 21 and a pressing plate locking device 22.

[0041] The pressing plate 21 is used to be fitted on a set area of ​​the built-in steel plate 1 of the steel plate concrete composite shear wall before the concrete pouring construction of the steel plate concrete composite shear wall and to apply anti-buckling pressure.

[0042] The pressing plate locking device 22 is used to fit the pressing plate 21 on the set area of ​​the built-in steel plate 1 and apply a pre-tightening force to the pressing plate 21 so that the pressing plate 21 generates anti-buckling pressure on the set area of ​​the built-in steel plate 1.

[0043] In the internal steel plate anti-buckling device of Example 1, the pressure plate 21 comprises a first clamping plate 211a and a second clamping plate 211b, positioned opposite each other on either side of a designated area of ​​the internal steel plate 1. The designated area of ​​the internal steel plate 1 is typically a location prone to buckling. Both the first clamping plate 211a and the second clamping plate 211b are U-shaped steel, identical in size, and can be 8mm to 15mm thick.

[0044] like Figure 2 As shown, the pressure plate locking device 22 is a threaded connector consisting of multiple sets of bolts and nuts, which is used to lock the first clamping plate 211a, the inner steel plate 1, and the second clamping plate 211b together. Specifically, the first clamping plate 211a, the second clamping plate 211b, and the inner steel plate 1 are provided with corresponding through holes. The bolts are sequentially inserted through the through holes in the first clamping plate 211a, the through holes in the inner steel plate 1, and the through holes in the second clamping plate 211b, and then locked with nuts.

[0045] During installation, the buckling-prone area of ​​the internal steel plate 1 is first identified. The first and second clamping plates 211a, 211b are then placed on either side of the area and fastened together using bolts and nuts. By properly adjusting the tightening of the nuts 24, the magnitude of the anti-buckling pressure applied to the internal steel plate 10 can be controlled.

[0046] The built-in steel plate anti-buckling device of the first embodiment has a simple structure and is easy to install. It can effectively prevent the built-in steel plate from buckling and deforming before and after concrete pouring, and is particularly suitable for situations where the built-in steel plate is thin.

[0047] However, the built-in steel plate anti-buckling device of the first embodiment also has the following disadvantages: First, additional holes need to be punched on the built-in steel plate 1 , which will weaken the overall strength of the built-in steel plate 1 .

[0048] Second, the first clamping plate 211a and the second clamping plate 211b are required to contact both sides of the built-in steel plate 1 at the same time, so the positions of the first clamping plate 211a and the second clamping plate 211b need to be coordinated, which increases the difficulty of installation.

[0049] Third, if the shear studs 11 have been pre-welded on the built-in steel plate 1 (see Figure 3 The shear stud 11 is a common structure on the built-in steel plate 1. Its main function is to improve the shear connection performance of the steel plate concrete composite shear wall, enhance the composite effect between the steel plate and concrete, and ensure that the two materials can work together, thereby improving the bearing capacity, stiffness and seismic performance of the overall structure). The first splint 211a and the second splint 211b are difficult to use.

[0050] Fourth, the area of ​​the built-in steel plate 1 that is prone to buckling may not be accurately determined in advance and needs to be determined based on the actual buckling location. In this case, on-site drilling of the built-in steel plate 1 increases the workload.

[0051] The built-in steel plate anti-buckling device of the second embodiment of the present invention has been redesigned to effectively overcome the defects of the built-in steel plate anti-buckling device of the second embodiment.

[0052] Figure 4 This is a schematic structural diagram of a built-in steel plate anti-buckling device according to a second embodiment of the present invention. Figure 5 This is a schematic diagram of the usage status of the built-in steel plate anti-buckling device of Example 2 of the present invention. Figure 6 for Figure 4 Schematic diagram of the structure of the threaded sleeve. Figure 7 for Figure 4 Schematic diagram of the assembly of the threaded sleeve, nut and shear stud locking device. Figure 8 This is a cross-sectional view of the use state of the built-in steel plate anti-buckling device of embodiment 2 of the present invention. Figure 4-Figure 8 As shown, the built-in steel plate anti-buckling device of the second embodiment of the present invention includes a pressing plate 21 and a pressing plate locking device 22.

[0053] The pressing plate 21 is used to be fitted on a set area of ​​the built-in steel plate 1 of the steel plate concrete composite shear wall before the concrete pouring construction of the steel plate concrete composite shear wall and to apply anti-buckling pressure.

[0054] The pressing plate locking device 22 is used to fit the pressing plate 21 on the set area of ​​the built-in steel plate 1 and apply a pre-tightening force to the pressing plate 21 so that the pressing plate 21 generates anti-buckling pressure on the set area of ​​the built-in steel plate 1.

[0055] Specifically, first, the built-in steel plate 1 is a steel plate with shear studs distributed in an array on the surface. The shear studs are T-shaped head studs, which are used to enhance the shear connection performance between the steel plate and concrete.

[0056] The pressure plate 21 includes a shear stud perforated plate 212 positioned on one side of the designated area of ​​the internal steel plate 1. The shear stud perforated plate 212 is a straight-line strip with shear stud holes 2121 spaced along its length. When the shear stud perforated plate 212 is fitted over the designated area of ​​the internal steel plate 1, the shear stud holes 2121 on the shear stud perforated plate 212 correspond to different shear studs.

[0057] On the outer surface of the shear bolt perforated plate 212, at the edge of each shear bolt hole 2121, is a sleeve insertion and rotation prevention structure 2122. This is an octagonal prism-shaped protrusion that matches the shape and size of the inner side of one end of the threaded sleeve 221, preventing the threaded sleeve 221 from rotating.

[0058] The pressure plate locking device 22 comprises a threaded sleeve 221, a nut 222, and a shear stud locking device 223. The threaded sleeve 221 fits over the corresponding shear stud 11, with one end inserted into the corresponding sleeve-jointed anti-rotation structure 2122, where it is circumferentially fixed. The other end of the threaded sleeve 221 is threadably connected to the nut 222 fitted over the T-head of the corresponding shear stud 11.

[0059] The shear stud locking device 223 comprises a plurality of radial bolts 2231 circumferentially spaced apart and arranged on corresponding nuts 222 . The tail ends of the radial bolts 2231 clamp the side wall of the shear stud 11 and contact the end surface of the neck flange of the T-shaped head thereof.

[0060] The working principle of the built-in steel plate anti-buckling device of the second embodiment is as follows: the shear stud perforated plate 212 is attached to the set area of ​​the built-in steel plate 1, the existing shear stud 11 is used as a fixing point, the shear stud penetration hole 2121 on the shear stud perforated plate 212 is aligned with the shear stud 11, and then the threaded sleeve 221 is inserted. One end of the threaded sleeve 221 cooperates with the octagonal prism-shaped protrusion on the shear stud perforated plate 212 to prevent the threaded sleeve 221 from being twisted by inserting the sleeve into the anti-rotation structure 2122. 1 is rotated, and the other end of the threaded sleeve 221 is threadedly connected with the nut 222; by turning the nut 222, the nut 222 moves axially outward relative to the threaded sleeve 221, and at this time the radial bolt 2231 clamps the side wall of the shear stud 11 and contacts the end face of the neck flange of the T-shaped head. The radial bolt 2231 applies an axial outward pre-tightening force to the T-shaped head, so that the threaded sleeve 221 presses against the shear stud perforated plate 212, so that the shear stud perforated plate 212 applies anti-buckling pressure to the internal steel plate 1.

[0061] The main advantages of the built-in steel plate anti-buckling device of embodiment 2 are: 1. It makes full use of the existing shear bolts 11 on the built-in steel plate 1 as fixing points, without the need to drill additional holes in the built-in steel plate 1 to weaken its strength; 2. It can be constructed by only contacting one side of the built-in steel plate 1, which has a wider applicability; 3. The sleeve plug-in anti-rotation structure 2122 of the prismatic protrusion structure matches the shape of the inner end of the threaded sleeve 221 to form a reliable circumferential fixation, preventing the threaded sleeve 221 from rotating during the tightening process; 4. The radial bolt 2231 of the shear bolt locking device 223 clamps the side wall of the shear bolt 11 and the neck of its T-shaped head The end face contact of the flange provides a positioning function in the radial direction, and at the same time generates an axial outward pre-tightening force when tightening, thereby realizing effective force transmission; Fifth, the built-in steel plate anti-buckling device forms a complete force transmission path: the nut 222 applies axial force to the T-head through the radial bolt 2231, so that the threaded sleeve 221 supports the shear stud perforated plate 212, and then applies precise and controllable anti-buckling pressure to the built-in steel plate 1; Sixth, the built-in steel plate anti-buckling device can adjust the size of the pre-tightening force and the installation position of the built-in steel plate anti-buckling device; Seventh, the overall structure is compact and easy to install and disassemble, which improves the construction efficiency and quality of the steel plate concrete composite shear wall.

[0062] In an improved embodiment, the shear stud perforated plate 212 is further provided with a lifting lug 2123 , which is welded to the side of the shear stud perforated plate 212 and is used for connecting a lifting device during installation.

[0063] Figure 9 This is a schematic diagram of a method of using the built-in steel plate anti-buckling device of embodiment 2 of the present invention. Figure 9 As shown, the built-in steel plate anti-buckling device is installed between two laterally adjacent built-in steel plates 1. This installation method enables the anti-buckling device to not only provide anti-buckling protection for these built-in steel plates 1, but also achieve positioning between the two built-in steel plates 1.

[0064] Specifically, the function of this installation method is as follows: first, the shear bolt perforated plate 212 is connected across two laterally adjacent built-in steel plates 1, and is respectively penetrated through the shear bolts 11 on the surfaces of the two built-in steel plates 1 through different shear bolt penetration holes 2121, and then the shear bolt perforated plate 212 applies anti-buckling pressure to the two built-in steel plates 1 at the same time through the tightening action of the threaded sleeve 221 and the nut 222; secondly, this connection method forms a structural constraint between the two built-in steel plates 1, which can not only prevent their respective independent deformation, but also prevent the relative displacement and deformation between the two built-in steel plates 1, ensuring that they maintain a relatively fixed positional relationship during the concrete pouring process.

[0065] Figure 10 This is a schematic diagram of another use of the built-in steel plate anti-buckling device of embodiment 2 of the present invention. Figure 10 As described above, the shear stud perforated plate 212 is fitted onto the built-in steel plate and forms an L-shape. This method enables the shear stud perforated plate 212 to form an L-shaped surrounding structure around the two adjacent edges of the built-in steel plate 1, which can simultaneously apply anti-buckling pressure to the two adjacent edges of the built-in steel plate 1. It is particularly suitable for the corner areas of the built-in steel plate 1, effectively preventing corner deformation. The L-shaped structure provides two-way constraints, enhances the anti-buckling effect, and makes the plate corner areas more stable during the concrete pouring process. At the same time, this arrangement can form a stable integral connection at the corners of the built-in steel plate 1, reducing the risk of corner deformation. It plays an important role in improving the overall stiffness and stability of the shear wall, and is particularly suitable for construction in stress concentration areas such as floor corners and opening corners.

[0066] Figure 11 This is another schematic diagram of another use of the built-in steel plate anti-buckling device of embodiment 2 of the present invention. Figure 10 As described above, the shear stud perforated plate 212 is fitted onto the built-in steel plate and forms a U-shape. This method enables the shear stud perforated plate 212 to form a U-shaped surrounding structure along the three connected edges of the built-in steel plate 1, which can simultaneously apply anti-buckling pressure to the three connected edges of the built-in steel plate 1, providing more comprehensive deformation protection; the U-shaped structure forms a three-way constraint, greatly enhancing the anti-buckling effect, making the plate edge area more stable during the concrete pouring process; this method is particularly suitable for the three-sided opening area of ​​the built-in steel plate 1, such as the area around the door and window openings of the shear wall, and can effectively control the stress concentration and deformation around the opening; at the same time, the U-shaped arrangement can also form a more integrated connection between the three adjacent edges, forming a closed structure when subjected to the lateral pressure of the concrete, significantly improving the rigidity and overall stability of the structure, and making an outstanding contribution to improving the construction quality of the steel plate concrete composite shear wall.

[0067] In other embodiments, the shear stud perforated plate 212 is fitted onto the built-in steel plate in a Z-shape. This arrangement allows the shear stud perforated plate 212 to form a Z-shaped structure and be arranged on the built-in steel plate 1, enabling overall anti-buckling in irregular or cross-regional locations. The Z-shaped structure establishes a rigid connection between different regions of the built-in steel plate 1 through a continuous turning arrangement, forming an overall anti-buckling system, allowing the dispersed shear studs 11 to work together to resist the lateral pressure generated during concrete pouring. This arrangement effectively solves the problem of being unable to achieve overall constraint when only a unidirectional linear anti-buckling device is used. Through the Z-shaped structure, the anti-buckling effect is extended from one region to another, enhancing the overall anti-deformation capability of the built-in steel plate 1. At the same time, this overall constraint can also prevent the deformation of the built-in steel plate 1 from spreading when the force is unevenly distributed locally, ensuring that the built-in steel plate 1 maintains its overall flatness during concrete pouring and use, thereby improving the construction quality and structural performance of the steel plate concrete composite shear wall.

[0068] This embodiment provides a method for constructing a steel plate concrete composite shear wall, and the specific steps are as follows:

[0069] Step 1: Select the appropriate steel plate concrete composite shear wall built-in steel plate anti-buckling device according to the size and shape of the built-in steel plate, and install the anti-buckling device on different set areas of the built-in steel plate.

[0070] Step 2: If Figure 12 As shown, the steel wire ropes of the lifting equipment are connected to the lifting lugs on the shear stud perforated plates. Using the lifting lugs on the shear stud perforated plates of the steel plate buckling restraints built into the steel plate concrete composite shear wall, the internal steel plates are stably lifted from top to bottom to the installation location. This multi-point lifting effectively reduces the swing of the internal steel plates during the lifting process, lowering the risk of them striking the steel beams of the building construction machine.

[0071] Step 3: After the internal steel plate is hoisted into place, adjust its position to ensure it is aligned with the surrounding structure. Then further tighten the nuts on the anti-buckling device to ensure that the shear stud perforated plate applies appropriate anti-buckling pressure to the internal steel plate.

[0072] Step 4: After assembling the concrete casting mold, concrete pouring is carried out. During the concrete pouring process, the anti-buckling device can effectively prevent the built-in steel plate from buckling and deformation, ensuring a good bond between the concrete and the steel plate.

[0073] The construction method of this embodiment not only solves the buckling deformation problem of the built-in steel plate by installing anti-buckling devices at multiple points and using these devices for hoisting, but also improves the stability and safety of the hoisting process, and significantly improves the construction efficiency and quality of the steel plate concrete composite shear wall.

[0074] The above describes the relevant contents of the present invention. Based on this description, a person skilled in the art will be able to implement the present invention. Based on the above content of this specification, all other embodiments obtained by a person skilled in the art without making any creative efforts should fall within the scope of the present invention.

Claims

1. The steel plate concrete composite shear wall has a built-in steel plate anti-buckling device, which is characterized by: include: A pressure plate is used to be fitted on a set area of ​​the built-in steel plate of the steel plate concrete composite shear wall before the concrete pouring construction of the steel plate concrete composite shear wall and to apply anti-buckling pressure; and The pressure plate locking device is used to fit the pressure plate on the set area of ​​the built-in steel plate and apply a pre-tightening force to the pressure plate so that the pressure plate generates anti-buckling pressure on the set area of ​​the built-in steel plate.

2. The steel plate concrete composite shear wall with built-in steel plate anti-buckling device according to claim 1, characterized in that: The pressing plate comprises a first clamping plate and a second clamping plate which are arranged on both sides of a set area of ​​the built-in steel plate. The first clamping plate, the built-in steel plate and the second clamping plate are locked together by a threaded connector.

3. The steel plate concrete composite shear wall with built-in steel plate anti-buckling device according to claim 1, characterized in that: The built-in steel plate is a steel plate with shear studs distributed in an array on the surface; The pressure plate includes a shear stud perforated plate arranged on one side of a set area of ​​the built-in steel plate, and the shear stud perforated plate is distributed with shear stud penetration holes. When the shear stud perforated plate is fitted on the set area of ​​the built-in steel plate, the shear stud penetration holes distributed on the shear stud perforated plate are penetrated one by one on different shear studs. On the outer surface of the shear stud perforated plate, at the edge of each shear stud penetration hole, a sleeve plug-in anti-rotation structure is provided; The pressure plate locking device includes a threaded sleeve, a nut and a shear bolt locking device. The threaded sleeve is used to be sleeved on the corresponding shear bolt and one end is inserted into the corresponding sleeve plug-in anti-rotation structure to be circumferentially fixed to the sleeve plug-in anti-rotation structure. The other end of the threaded sleeve is threadedly adapted to be connected with the nut sleeved on the T-head of the corresponding shear bolt. The shear bolt locking device is installed on the nut and is clamped and adapted with the end face of the neck flange of the T-head of the corresponding shear bolt.

4. The steel plate concrete composite shear wall with built-in steel plate anti-buckling device according to claim 3, characterized in that: The shear stud locking device comprises a plurality of radial bolts circumferentially spaced and arranged on corresponding nuts, the tail ends of the bolts clamp the side walls of the shear stud and contact the end surface of the neck flange of the T-shaped head.

5. The steel plate concrete composite shear wall with built-in steel plate anti-buckling device according to claim 3, characterized in that: The sleeve plug-in anti-rotation structure is a prismatic protrusion structure with an outer side, and the inner side of one end of the threaded sleeve is adapted to the shape and size of the prismatic protrusion structure.

6. The steel plate concrete composite shear wall with built-in steel plate anti-buckling device according to claim 3, characterized in that: Lifting ears are provided on the shear stud perforated plates.

7. The steel plate concrete composite shear wall with built-in steel plate anti-buckling device according to claim 3, characterized in that: The shear bolt perforated plate is a strip plate, on which shear bolt perforated holes are arranged at intervals along the length direction of the strip plate.

8. The steel plate concrete composite shear wall with built-in steel plate anti-buckling device according to claim 7, characterized in that: The shear stud perforated plate is fitted on the built-in steel plate to form an L-shape, U-shape or Z-shape.

9. The steel plate concrete composite shear wall construction method is characterized by: Before the concrete pouring construction of the steel plate concrete composite shear wall, the steel plate concrete composite shear wall built-in steel plate anti-buckling device as described in any one of claims 1 to 8 is installed on the set area of ​​the built-in steel plate of the steel plate concrete composite shear wall, and then the concrete pouring construction is carried out.

10. The steel plate concrete composite shear wall construction method according to claim 9, characterized in that: First, the steel plate concrete composite shear wall built-in steel plate anti-buckling devices are installed on different set areas of the built-in steel plate, and then the built-in steel plate is stably lifted from top to bottom to the installation position by using the lugs on the shear stud perforated plates of these steel plate concrete composite shear wall built-in steel plate anti-buckling devices. Then, after the concrete pouring mold is assembled, the concrete pouring construction is carried out.

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