A full assembly type concrete shear wall

Abstract

The application relates to the field of buildings, and particularly discloses a full-assembly type concrete shear wall, which comprises upper shear walls and lower shear walls arranged in a stacking mode; the upper shear walls and / or the lower shear walls are provided with accommodating cavities at edge end corners; and the accommodating cavities corresponding to the end corners of the upper shear walls and the lower shear walls are connected in a detachable mode through end connecting pieces; and the stacking areas of the upper shear walls and the lower shear walls are connected in a buckling mode through buckling type horizontal connecting structures. The application can effectively improve the energy consumption capacity and ductility of the full-assembly type concrete shear wall, and the shear wall has good anti-seismic performance, high structural safety and reliability, is convenient to assemble, easy to replace and repair, has low pollution and low cost.

Description

[0001] This application is a divisional application of Chinese patent application No. 202211456044.6, filed on November 21, 2022, entitled "A Horizontal Connection Structure with Interlocking and a Fully Prefabricated Concrete Shear Wall". Technical Field

[0002] This invention relates to the field of construction, specifically to a fully prefabricated concrete shear wall. Background Technology

[0003] As a primary load-bearing component of high-rise structures, the form and stress performance of the connection nodes of prefabricated concrete shear walls are key areas of design and research. The stress performance of connection nodes and joints is a crucial factor determining the overall load-bearing capacity, ductility, stiffness, and seismic performance of the structure. The connection methods for horizontal joints in prefabricated shear walls are mainly divided into wet connections and dry connections.

[0004] Dry connection, as a major connection method for prefabricated concrete shear walls, mainly includes welded connections, prestressed connections, and bolted connections. It can achieve fully prefabricated connections in buildings, and to some extent solves some problems of wet connections, such as complex construction procedures, difficult quality inspection, and difficulty in ensuring construction quality. However, existing dry connection forms still fail to fully utilize the advantages of fully prefabricated connections, such as ease of installation, good seismic performance, rapid post-earthquake repair, and convenient monitoring and inspection. For example, the quality of welded seams in welded connections is difficult to guarantee on-site, and the amount of on-site welding work is large; prestressed connections also have problems with low stiffness, energy dissipation capacity, and ductility coefficient. Bolted connections, on the other hand, have been widely studied by scholars at home and abroad due to their good seismic performance, high degree of standardization, and fast construction speed. Currently, the main technical forms used in engineering include box-type connections and bolt splicing, but there are still problems such as bolt holes being too small for assembly, the need to fill the box cavity with mortar for wet construction, bolt deformation after damage making disassembly and replacement difficult, the connection being prone to brittle failure, and insufficient energy dissipation capacity. Meanwhile, for prefabricated concrete shear walls, after an earthquake, the wall base connection often experiences stress concentration, resulting in steel bar buckling and large-scale concrete spalling. In particular, concrete cracking and spalling are very likely to occur, and once such damage occurs, it is difficult to repair quickly, which greatly affects the performance of prefabricated concrete shear walls and makes it difficult to fully utilize the advantages of the fully prefabricated connection method. Therefore, this issue urgently needs to be addressed. Summary of the Invention

[0005] To avoid and overcome the technical problems existing in the prior art, this invention provides a fully prefabricated concrete shear wall. This invention can effectively improve the energy dissipation capacity and ductility of prefabricated concrete shear walls, exhibiting good seismic performance, high structural safety and reliability. It is also easy to assemble, replace, and repair, can significantly dissipate seismic energy, and has low pollution and low cost.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A fully prefabricated concrete shear wall includes an upper shear wall and a lower shear wall stacked together. The upper shear wall and / or the lower shear wall have mounting cavities at their edge corners. The mounting cavities at the corresponding corners of the upper and lower shear walls are detachably connected by end connectors. The overlapping areas of the upper and lower shear walls are fastened together by a snap-fit ​​horizontal connection structure.

[0008] The snap-fit ​​horizontal connection structure includes an upper fastener and a lower fastener that can generate a snap-fit ​​action. The upper fastener seat of the upper fastener and the lower fastener seat of the lower fastener are horizontally offset and centrally symmetrically distributed.

[0009] The upper buckle includes a U-shaped segment with an opening facing downwards and the two ends of the U-shaped segment are staggered in length. The long arm of the U-shaped segment of the upper buckle extends horizontally to the end of an upper cantilever, and there is a first insertion port between the end of the upper cantilever and the short arm of the U-shaped segment.

[0010] The lower buckle includes an upward-opening U-shaped segment with the two ends of the U-shaped segment staggered in length. The long arm of the U-shaped segment of the lower buckle extends horizontally to form a lower cantilever, and there is a second insertion port between the arm end of the lower cantilever and the short arm of the U-shaped segment.

[0011] When the upper buckle and the lower buckle are fastened together, the U-shaped long arm and the upper cantilever of the upper buckle are inserted into the lower buckle from the second insertion port and abut against the inner wall of the lower buckle at a right angle. The U-shaped long arm and the lower cantilever of the lower buckle are inserted into the upper buckle from the first insertion port and abut against the inner wall of the upper buckle at a right angle.

[0012] The upper shear wall has an upward-facing U-shaped groove in the overlapping section for the upper fastener to be embedded in. The depth of the upper U-shaped groove matches the length of the short arm of the U-shaped section of the upper fastener. The upper embedded bolt is embedded in the wall body of the upper shear wall.

[0013] The overlapping section of the lower shear wall has an upward-facing U-shaped groove for the lower fastener to be embedded in. The depth of the lower U-shaped groove matches the length of the short arm of the U-shaped section of the lower fastener. The lower embedded bolt is embedded in the wall body of the lower shear wall.

[0014] As a further aspect of the present invention: the end connector is a replaceable energy-consuming connector, which includes an upper connecting seat and a lower connecting seat arranged opposite each other. Energy-consuming friction plates extend along the vertical direction on the upper connecting seat and / or the lower connecting seat so that the upper connecting seat and the lower connecting seat can be connected vertically. At least two sets of energy-consuming clamping plates are arranged on the front and rear sides of the energy-consuming friction plates to clamp and fix the energy-consuming friction plates to restrict the separation of the upper connecting seat and the lower connecting seat. The upper shear wall and / or the lower shear wall have square mounting cavities at their edge corners for the installation of the replaceable energy-consuming connector. The upper connecting seat and the lower connecting seat are pre-embedded in the corresponding mounting cavities.

[0015] As a further embodiment of the present invention: an energy-consuming friction plate is arranged on an upper connecting seat, and a mating plate corresponding to the position and size of the energy-consuming friction plate is arranged on the lower connecting seat, with the mating plate abutting against the energy-consuming friction plate from bottom to top; the two energy-consuming clamping plates simultaneously clamp and fix the energy-consuming friction plate and the mating plate; an elongated hole is opened on the surface of the energy-consuming friction plate along the vertical direction; the two energy-consuming clamping plates and the mating plate are pre-tightened by high-strength bolts; another set of fixing bolts passes through the elongated hole on the energy-consuming friction plate and then fixes the two energy-consuming clamping plates and the mating plate. The friction plate is pre-tightened; the upper connecting seat is provided with upper extension plates on both sides of the friction plate, and the lower connecting seat is provided with lower extension plates on both sides of the mating plate. The friction plate is arranged parallel to the wall, and the upper and lower extension plates are perpendicular to the wall. The upper and lower extension plates are connected by an energy-consuming connecting plate. The two ends of the energy-consuming connecting plate are connected and fixed to the upper and lower extension plates respectively by bolts. The energy-consuming connecting plate is an I-shaped low-yield steel plate, and the plate body has an elongated hole along the vertical direction.

[0016] As a further embodiment of the present invention: the mounting cavities at the edge corners of the upper shear wall and the lower shear wall are square mounting cavities of the same size, and the end connectors are fully assembled seismic connectors. The fully assembled seismic connectors include two sets of edge H-beams stacked and fixed from top to bottom, and the webs of the two edge H-beams are parallel to the wall surfaces of the upper shear wall and the lower shear wall.

[0017] As a further embodiment of the present invention: the upper shear wall and the lower shear wall are pre-embedded with edge pre-embedded end plates that are welded and fixed to the edge H-shaped steel flanges and webs. The edge pre-embedded end plates are consistent with the horizontal dimensions of the upper shear wall and the lower shear wall and their positions correspond.

[0018] As a further embodiment of the present invention: two layers of connecting end plates are arranged between the two edge H-beams, and the two edge H-beams are respectively welded and fixed to the corresponding connecting end plates. The two connecting end plates are connected and fixed by connecting screws, nuts and washers. The connecting end plates have symmetrically opened assembly holes on both sides of the web of the edge H-beams. The assembly holes on the two connecting end plates are corresponding in position. After the connecting screw passes through the assembly holes of the two connecting end plates in the vertical direction, the nuts at both ends of the connecting screw lock and fix the two connecting end plates. A double layer of washers is provided between the nuts and the connecting end plates. The assembly hole is an oblong hole, and at least two sets of connecting screws are arranged in the hole.

[0019] As a further embodiment of the present invention: the upper fastener also includes an upper pre-embedded screw that is inserted into the seat cavity of the upper fastener from top to bottom along the vertical direction, and a lower guide hole corresponding to the position of the upper pre-embedded screw is provided on the lower cantilever of the lower fastener. After the upper pre-embedded screw passes through the lower guide hole, it is fixed to the lower fastener by bolts.

[0020] The lower fastener also includes a lower pre-embedded screw that is inserted into the seat cavity of the lower fastener from bottom to top along the vertical direction. The upper cantilever of the upper fastener is provided with an upper guide hole corresponding to the position of the lower pre-embedded screw. After the lower pre-embedded screw passes through the upper guide hole, it is fixed to the upper fastener by bolts.

[0021] The upper guide hole and the lower guide hole are arranged parallel to the upper cantilever and the lower cantilever, respectively, and the upper guide hole and the lower guide hole are oblong holes with opposite opening directions.

[0022] As a further embodiment of the present invention: after the upper and lower fasteners are fastened together, they form a fastening cavity. A fastening clamping device is arranged inside the fastening cavity. The fastening clamping device includes a first screw sleeve that abuts against one side wall of the fastening cavity and a second screw sleeve that abuts against the other side wall of the fastening cavity. The two ends of a horizontally arranged adjusting screw are threadedly engaged with the first screw sleeve and the second screw sleeve, respectively. An adjusting nut is fixed on the shaft of the adjusting screw. When the adjusting screw rotates, it drives the first screw sleeve and the second screw sleeve to move in opposite directions or away from each other.

[0023] As a further embodiment of the present invention: the adjusting screw, the upper pre-embedded screw, and the lower pre-embedded screw are arranged in a cross-shaped pattern.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. This invention adopts a combination connection method of snap-fit ​​connectors and end connectors. When the end connectors adopt a replaceable connection form, during the earthquake, when the tensile force borne by the end of the wall fails to exceed the sliding threshold of components such as the friction plate, no relative sliding occurs between the friction plate and the clamping plate. The snap-fit ​​connectors form an integral whole through the snap-fit ​​clamping device, effectively resisting the horizontal shear force under the earthquake. The combined effect of the two fully guarantees the overall strength, stiffness and bearing capacity of the shear wall under normal use and minor earthquake conditions.

[0026] When the force on the end of the wall exceeds the sliding threshold of components such as the friction plate, the friction plate with the elongated hole slides relative to the clamping plate, causing the connecting plate to deform. The end connectors dissipate seismic energy preferentially through sliding friction and metal deformation. During a major earthquake, the friction plate of the end connectors slides relatively more relative to the energy-dissipating clamping plate until the high-strength bolt is restricted by the elongated hole of the friction plate. The bolt is squeezed against the hole wall, and the squeezing force and friction force work together to improve the load-bearing capacity of the wall. At the same time, there is a gap between the upper and lower fasteners in the middle of the wall. Under moderate earthquakes, they rub and squeeze against each other and undergo a certain degree of metal deformation, further dissipating seismic energy. Meanwhile, the fastening device of the fasteners is still in working condition, maintaining the strength and integrity of the fastening connectors and ensuring that the shear performance of the shear wall is not greatly affected.

[0027] Through the above design, the end connectors are made to take the lead in energy dissipation under minor and moderate earthquake conditions, preventing serious damage to the shear wall. Under moderate to strong earthquakes, the end connectors and the interlocking connectors work together to dissipate energy, realizing graded and regional energy dissipation according to the seismic energy input, and improving the shear wall's seismic performance such as bearing capacity, ductility and energy dissipation capacity.

[0028] 2. When selecting end connectors, this invention provides a square mounting cavity in the plastic hinge area at the wall base to house the end connectors. During earthquakes, concrete shear walls often suffer severe damage at the wall base, including steel bar buckling and large-scale concrete spalling, making repair difficult. Therefore, this invention achieves a detachable connection by using high-strength bolts, connecting plates, and energy-dissipating clamps to connect the upper and lower connecting seats. During an earthquake, the connecting plates on both sides deform, and the energy-dissipating clamps slide relative to the friction plates, dissipating seismic energy and concentrating the destructive energy in the end connectors in the plastic hinge area. This protects the main body of the concrete shear wall to a certain extent. After an earthquake, only the connecting plates on both sides need to be replaced, and the energy-dissipating clamps need to be re-fixed to achieve rapid repair. After a major earthquake, because this invention uses a fully prefabricated connection structure, if necessary, the snap-fit ​​connectors can be disassembled simultaneously to replace the entire severely damaged wall structure, improving reusability, reducing post-earthquake repair costs, and enhancing post-earthquake maintainability.

[0029] 3. This invention adopts a novel fully prefabricated horizontal connection structure. Replaceable energy-consuming end connectors are used at the wall ends, and a snap-fit ​​connection method is used in the middle of the wall panel. This breaks through the traditional bolt box connection method, improving the problem of difficulty in aligning bolt holes from top to bottom in box connections. Instead, it uses a side-push-in installation method, increasing the installation tolerance and making it suitable for prefabricated installation in compact environments, while reducing installation difficulty. Due to the fully prefabricated connection, installation is simple, eliminating the need for wet operations such as pouring cement mortar. Reliable connection is achieved simply by installing bolts and snap-fit ​​clamping devices, reducing the difficulty of prefabricated processes, minimizing environmental pollution, improving construction efficiency, and increasing mechanization. Simultaneously, the main load-bearing components of this structure are located on the outside of the concrete wall, allowing for convenient inspection and monitoring during construction and use, ensuring construction quality, and providing a basis for condition monitoring under normal use and post-earthquake repair assessment.

[0030] 4. The wall panel of this invention uses upper and lower fasteners in the middle for a preliminary simulated double-handed fastening connection, which can prevent out-of-plane instability of the wall during installation to a certain extent. After the upper and lower walls are horizontally pushed in and fastened, they are fixed by pre-embedded screws. The design of the guide hole facilitates the guiding and positioning of the screws. After fastening, rotating the adjusting screw will cause the first and second screw sleeves to move in opposite directions, thereby fully abutting against the upper and lower fasteners, effectively resisting horizontal shear force and preventing shear failure at the shear wall connection node. In the event of a strong earthquake, the wall will undergo significant displacement, but the horizontal adjusting rod can effectively ensure the rigidity and integrity of the fastening connection. Under this premise, the upper and lower fasteners in the fastening arrangement squeeze and rub against each other, generating deformation, which can effectively dissipate the energy brought by the earthquake, effectively improving the energy dissipation capacity and ductility of the prefabricated concrete shear wall, and to a certain extent ensuring good seismic performance and structural safety and reliability of the building. After the earthquake, because the snap-fit ​​connectors are mainly pre-loaded by bolt fixing and rotation tightening, after the earthquake, only the horizontal adjusting rod and nut need to be rotated in the opposite direction to loosen them slightly, and then the wall can be pushed out along the guide hole. This facilitates the disassembly and replacement of the entire wall. The end connection only requires the removal of bolts and connecting steel plates for quick disassembly, giving full play to the advantage of easy assembly of the fully assembled connection type.

[0031] 5. When selecting fully assembled seismic-resistant connectors, this invention uses double-layer thin pads with low stiffness and low-strength bolts. During seismic resistance, by designing the size of the assembly holes on the connection end plates and the thickness of the pads, the double-layer pads buckle before the bolts yield and fail, dissipating the energy brought by the earthquake to a certain extent. This prevents the structure from undergoing brittle failure before the bolts yield and fail, thus preventing the sudden failure of the horizontal connectors. At the same time, the larger assembly holes on the connection end plates can also improve the fault tolerance rate during component assembly.

[0032] 6. The present invention can effectively ensure the initial stiffness of the shear wall by fixing the end connectors on both sides of the wall, preventing the horizontal joint opening at the end from being too large during an earthquake when using the snap-fit ​​connector alone, and preventing the concrete at the wall foot from being crushed and spalled prematurely. This improves the ductility of the structure and helps the snap-fit ​​connector fully exert its seismic performance. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of one embodiment of the present invention.

[0034] Figure 2 This is a structural schematic diagram of the fully assembled seismic-resistant connector in this invention.

[0035] Figure 3 This is a schematic diagram of another embodiment of the present invention.

[0036] Figure 4 This is a schematic diagram of the replaceable energy-consuming connector in this invention.

[0037] Figure 5 This is an exploded view of the replaceable energy-consuming connector in this invention.

[0038] Figure 6 This is a schematic diagram of the structure when the upper and lower fasteners are separated in this invention.

[0039] Figure 7 This is a schematic diagram of the fastening device for fastening parts in this invention.

[0040] In the picture:

[0041] 1. Upper shear wall; 2. Lower shear wall;

[0042] 3. Replaceable energy-consuming connector; 31. Upper connector; 311. Energy-consuming friction plate; 312. Upper extension plate;

[0043] 32. Lower connecting seat; 321. Butt plate; 322. Lower extension plate;

[0044] 33. Energy-consuming connecting plate; 34. Energy-consuming clamping plate;

[0045] 4. Horizontal snap-fit ​​connection structure; 41. Upper fastener; 42. Lower fastener; 43. Fastener clamping device;

[0046] 411. Upper fastener; 412. Upper pre-embedded screw; 413. Upper guide hole;

[0047] 421. Lower fastener; 422. Lower embedded screw; 423. Lower guide hole;

[0048] 431. First screw sleeve; 432. Second screw sleeve;

[0049] 433. Adjusting screw; 434. Adjusting nut;

[0050] 5. Fully assembled seismic-resistant connectors; 51. Edge embedded end plates; 52. Edge H-beams;

[0051] 53. Connecting end plate; 531. Assembly hole; 54. Double-layer pad; 55. Connecting screw. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Please see Figures 1-7 In this embodiment of the invention, a fully prefabricated concrete shear wall includes an upper shear wall 1 that can be stacked on the lower shear wall 2.

[0054] The upper shear wall 1 has square mounting cavities at the two bottom corners, and the upper shear wall 1 and the lower shear wall 2 are connected at the corners by end connectors.

[0055] There are two arrangement forms for the end connectors: the fully assembled seismic-resistant connector 5 and the replaceable energy-dissipating connector 3.

[0056] The fully assembled seismic connection component 5 includes two sets of edge pre-embedded end plates 51, which are respectively pre-embedded in the installation cavity of the upper shear wall 1 and the lower shear wall 2. The dimensions of the edge pre-embedded end plates 51 are consistent with the horizontal dimensions of the installation cavity of the upper shear wall 1 and the lower shear wall 2 and their positions correspond.

[0057] The upper shear wall 1 and the lower shear wall 2 have identical mounting cavities at their corners, and each mounting cavity contains a set of edge H-beams 52. The web of the edge H-beams 52 is parallel to the wall surfaces of the upper shear wall 1 and the lower shear wall 2. The edge embedded end plates 51 at the mounting cavities at the corners of the upper shear wall 1 and the lower shear wall 2 are welded and fixed to the flanges and webs of the edge H-beams 52.

[0058] The edge H-beam 52, the edge embedded end plate 51, and the connecting end plate 53 are composed of full penetration welding.

[0059] The upper and lower sets of edge H-beams 52 are the same size and corresponding in position, and the flanges on the other side of the two edge H-beams 52 are welded and fixed to a set of connecting end plates 53 respectively. The two sets of corresponding connecting end plates 53 abut against each other and are corresponding in position. Each connecting end plate 53 has symmetrically opened assembly holes 531 on both sides of the web of the edge H-beam 52. The assembly holes 531 are oblong holes, and the diameter of the oblong holes is larger than the diameter of the connecting screw 55. The length direction of the assembly holes 531 is parallel to the wall surface.

[0060] After passing through two layers of connecting end plates 53, the connecting screw 55 is locked and fixed by the nuts at both ends of the connecting screw 55. A double-layer washer 54 is provided between the nuts and the connecting end plates 53. Preferably, two sets of connecting screws 55 are arranged in each assembly hole 531.

[0061] The connection methods of the fully assembled seismic connector 5 can be mainly divided into two types: direct connection and indirect anchoring. The first method involves connecting the vertical reinforcement of the edge member to the edge embedded end plate 51 via plug welds, then binding the vertical reinforcement along with the fully assembled seismic connector 5 to the other reinforcement of the shear wall to form a reinforcement cage. After pouring concrete, this creates a safe and reliable force transfer mechanism. The second method involves connecting the anchor bars to the edge embedded end plate 51 via plug welds, then installing the anchor bars to the shear wall reinforcement cage, avoiding the shear wall reinforcement. After pouring concrete, this forms a unified structure, achieving effective force transfer.

[0062] When the replaceable energy-consuming connector 3 is arranged, the mounting cavity is only set at the corner of the upper shear wall. The replaceable energy-consuming connector 3 includes an upper connecting seat 31 and a lower connecting seat 32 arranged opposite each other.

[0063] An energy-dissipating friction plate 311 extends vertically from the upper connecting seat 31. The energy-dissipating friction plate 311 is parallel to the wall surface, which refers to the wall surfaces of the upper shear wall 1 and the lower shear wall 2.

[0064] The lower connecting seat 32 extends vertically along a mating plate 321 that abuts against the energy-consuming friction plate 311. The mating plate 321 abuts against the energy-consuming friction plate 311 from bottom to top, and the position and mating surface size of the mating plate 321 and the energy-consuming friction plate 311 match. The energy-consuming friction plate 311 and the mating plate 321 can be used interchangeably in their upper and lower positions.

[0065] Two sets of energy-consuming clamping plates 34 are arranged on the front and rear sides of the energy-consuming friction plate 311 and the docking plate 321 to clamp and fix the energy-consuming friction plate 311 and the docking plate 321.

[0066] The length of the docking plate 321 is shorter than the length of the energy-consuming friction plate 311. The energy-consuming friction plate 311 has an elongated hole along its length. The two energy-consuming clamping plates 34 and the docking plate 321 are pre-tightened by high-strength bolts. Another set of fixing bolts passes through the elongated hole on the energy-consuming friction plate 311 to pre-tighten the two energy-consuming clamping plates 34 and the energy-consuming friction plate 311.

[0067] Upper extension plates 312 are arranged on both sides of the energy-consuming friction plate 311 on the upper connecting seat 31, and the surface of the upper extension plates 312 is perpendicular to the surface of the energy-consuming friction plate 311. Lower extension plates 322 are arranged on both sides of the docking plate 33 on the lower connecting seat 32, and the surface of the lower extension plates 322 is perpendicular to the surface of the docking plate 321.

[0068] The upper extension plate 312 and the lower extension plate 322 are positioned in the vertical direction and there is a certain distance between them. The upper extension plate 312 and the lower extension plate 322 are connected by an energy-consuming connecting plate 33.

[0069] The energy-dissipating connecting plate 33 is an I-shaped plate with an elongated hole along its vertical direction. The plate body of the energy-dissipating connecting plate 33 is attached to the surfaces of the upper extension plate 312 and the lower extension plate 322, and both ends of the energy-dissipating connecting plate 33 are connected and fixed to the upper extension plate 312 and the lower extension plate 322 by bolts.

[0070] The area between the two mounting cavities where the upper shear wall 1 and the lower shear wall 2 are located is the overlapping area.

[0071] The overlapping areas of the upper shear wall 1 and the lower shear wall 2 are connected by a snap-fit ​​horizontal connection structure 4.

[0072] The interlocking horizontal connection structure 4 includes an upper fastener 41 and a lower fastener 42, which are horizontally staggered and centrally symmetrically distributed.

[0073] The upper shear wall 1 has an upward-facing U-shaped groove in the overlapping section for the upper fastener seat 411 of the upper fastener 41 to be embedded therein. The upper shear wall 1 also has a vertically arranged upper embedded screw 412 embedded in the overlapping section, which extends from top to bottom into the seat cavity of the upper fastener seat 411.

[0074] The lower shear wall 2 has an upward-opening U-shaped groove in the overlapping section for the lower fastener seat 421 of the lower fastener 42 to be pre-embedded therein. The lower shear wall 2 also has a vertically arranged lower pre-embedded screw 422 pre-embedded in the overlapping section, which extends from bottom to top into the seat cavity of the lower fastener seat 421.

[0075] The upper fastener 411 and the lower fastener 421 can be effectively anchored to the wall by means of plug welding anchor bars, etc. The upper pre-embedded screw 412 and the lower pre-embedded screw 422 are respectively welded and fixed to the upper fastener 411 and the lower fastener 421.

[0076] The upper fastener 411 includes a U-shaped segment with an opening facing downwards. The two ends of the U-shaped segment of the upper fastener 411 are staggered in length. The end of its short arm is flush with the bottom surface of the overlapping section of the upper shear wall 1, and its long arm extends beyond the overlapping area of ​​the upper shear wall 1. The end of the long arm extends horizontally towards the direction of the short arm, forming an upper cantilever. There is a first insertion point between the end of the upper cantilever and the short arm of the U-shaped segment of the upper fastener 411, and the horizontal distance between the end of the upper cantilever and the short arm of the U-shaped segment of the upper fastener 411 matches the width of the short arm.

[0077] The lower retaining seat 421 includes an upward-opening U-shaped segment. The two ends of the U-shaped segment of the lower retaining seat 421 are staggered in length. The end of its short arm is flush with the top surface of the overlapping section of the lower shear wall 2. Its long arm extends beyond the overlapping area of ​​the lower shear wall 2, and the end of the long arm extends horizontally towards the short arm to form an upper cantilever. There is a second insertion point between the end of the upper cantilever and the short arm of the U-shaped segment of the lower retaining seat 421, and the horizontal distance between the end of the upper cantilever and the short arm of the U-shaped segment of the lower retaining seat 421 exactly matches the width of the short arm.

[0078] An upper guide hole 413 is provided on the upper cantilever of the upper buckle 411 along the direction parallel to the short arm of the U-shaped section of the upper buckle 411. The upper guide hole 413 corresponds to the position of the lower pre-embedded screw 422.

[0079] The lower cantilever of the lower buckle 421 is provided with a lower guide hole 423 along the direction of the short arm of the U-shaped section parallel to the lower buckle 421. The lower guide hole 423 corresponds to the position of the upper pre-embedded screw 412.

[0080] The upper guide hole 413 and the lower guide hole 423 are positioned in the vertical direction and their openings face each other. Both the upper guide hole 413 and the lower guide hole 423 are elongated holes.

[0081] When the upper buckle 411 and the lower buckle 421 are engaged, they are pushed in horizontally. After the upper pre-embedded screw 412 is pushed into place along the lower guide hole 423, it is fixed to the lower buckle 421 by bolts. After the lower pre-embedded screw 422 is pushed into place along the upper guide hole 413, it is fixed to the upper buckle 411 by bolts.

[0082] At this time, the U-shaped long arm and the upper cantilever of the upper buckle 411 are horizontally inserted into the lower buckle 421 from the second socket and fully abut against the inner wall of the lower buckle 421 at a right angle. The U-shaped long arm and the lower cantilever of the lower buckle 421 are horizontally inserted into the upper buckle 411 from the first socket and fully abut against the inner wall of the upper buckle 411 at a right angle.

[0083] After fastening is completed, the upper fastener 41 and the lower fastener 42 form a fastening cavity, and a fastening clamping device 43 needs to be installed in the fastening cavity. The fastening clamping device 43 includes two sets of first screw sleeves 431 and second screw sleeves 432, which respectively abut against one side wall of the fastening cavity. The horizontally arranged adjusting screws 433 are threadedly engaged with the first screw sleeves 431 and the second screw sleeves 432 with opposite thread directions.

[0084] An adjusting nut 434 is coaxially fixed at the center of the adjusting screw 433. Tightening the adjusting nut 434 will cause the first screw sleeve 431 and the second screw sleeve 432 to move in opposite directions or away from each other through the threaded engagement, thereby abutting against the upper fastener 41 and the lower fastener 42.

[0085] After the fastening is completed, the adjusting screw 433, the upper pre-embedded screw 412 and the lower pre-embedded screw 422 are arranged in a cross shape, and the intersection of the cross is preferably located at the center of the fastening cavity.

[0086] An initial, simulated double-handed fastening connection is achieved using upper and lower fasteners, preventing out-of-plane instability of the wall during installation. After the upper and lower walls are horizontally pushed in and fastened, they are fixed using pre-embedded screws. The guide hole design facilitates the guiding and positioning of the screws. After fastening, rotating the adjusting screw allows the first and second screw sleeves to move in opposite directions, thus fully engaging with the upper and lower fasteners, effectively resisting horizontal shear forces and preventing shear damage at the shear wall connection nodes.

[0087] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0088] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0089] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0090] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0091] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A fully prefabricated concrete shear wall, characterized in that, The structure includes an upper shear wall (1) and a lower shear wall (2) arranged in a stacked manner. The upper shear wall (1) and the lower shear wall (2) have installation cavities at their edge corners. The corner installation cavities of the upper shear wall (1) and the lower shear wall (2) are connected in a detachable manner through end connectors. The overlapping areas of the upper shear wall (1) and the lower shear wall (2) are connected by a snap-fit ​​horizontal connection structure (4). The snap-fit ​​horizontal connection structure (4) includes an upper fastener (41) and a lower fastener (42) that can generate a snap-fit ​​action. The upper fastener seat (411) of the upper fastener (41) and the lower fastener seat (421) of the lower fastener (42) are horizontally offset and centrally symmetrically distributed. The upper buckle (411) includes a U-shaped segment with an opening facing downwards and the two ends of the U-shaped segment are staggered in length. The long arm of the U-shaped segment of the upper buckle (411) extends horizontally with an upper cantilever. There is a first insertion port between the arm end of the upper cantilever and the short arm of the U-shaped segment. The lower buckle (421) includes an upward-opening U-shaped segment with the two ends of the U-shaped segment staggered in length. The long arm of the U-shaped segment of the lower buckle (421) extends horizontally with a lower cantilever. There is a second insertion port between the arm end of the lower cantilever and the short arm of the U-shaped segment. When the upper buckle (411) and the lower buckle (42) are fastened together, the U-shaped long arm and the upper cantilever of the upper buckle (411) are inserted into the lower buckle (421) from the second insertion port and abut against the inner wall of the lower buckle (421) at a right angle. The U-shaped long arm and the lower cantilever of the lower buckle (421) are inserted into the upper buckle (411) from the first insertion port and abut against the inner wall of the upper buckle (411) at a right angle. The upper shear wall (1) has an upper U-shaped groove with an opening facing downwards in the overlapping section for the upper buckle (411) to be pre-embedded in it. The depth of the upper U-shaped groove matches the length of the short arm of the U-shaped section of the upper buckle (411). The upper pre-embedded screw (412) is pre-embedded in the wall body of the upper shear wall (1). The overlapping section of the lower shear wall (2) has an upward-opening lower U-shaped groove for the lower fastener (421) to be pre-embedded therein. The depth of the lower U-shaped groove matches the length of the short arm of the U-shaped section of the lower fastener (421). The lower pre-embedded screw (422) is pre-embedded into the wall body of the lower shear wall (2).

2. A fully prefabricated concrete shear wall according to claim 1, characterized in that, The end connector is a replaceable energy-consuming connector (3). The replaceable energy-consuming connector (3) includes an upper connecting seat (31) and a lower connecting seat (32) arranged opposite each other. Energy-consuming friction plates (311) extend vertically on the upper connecting seat (31) and the lower connecting seat (32) so that the upper connecting seat (31) and the lower connecting seat (32) can be connected vertically. At least two sets of energy-consuming clamping plates (34) are arranged on the front and rear sides of the energy-consuming friction plate (311) to clamp and fix the energy-consuming friction plate (311) to restrict the separation of the upper connecting seat (31) and the lower connecting seat (32). The upper shear wall (1) and the lower shear wall (2) have square placement cavities at their edge corners for the installation of the replaceable energy-consuming connector (3). The upper connecting seat (31) and the lower connecting seat (32) are pre-embedded in the corresponding placement cavities.

3. A fully prefabricated concrete shear wall according to claim 2, characterized in that, An energy-consuming friction plate (311) is arranged on an upper connecting seat (31), and a mating plate (321) corresponding to the position and size of the energy-consuming friction plate (311) is arranged on a lower connecting seat (32). The mating plate (321) abuts against the energy-consuming friction plate (311) from bottom to top. The two energy-consuming clamping plates (34) simultaneously clamp and fix the energy-consuming friction plate (311) and the mating plate (321). The surface of the energy-consuming friction plate (311) has an elongated hole along the vertical direction. The two energy-consuming clamping plates (34) and the mating plate (321) are pre-tightened by high-strength bolts. Another set of fixing bolts passes through the elongated hole on the energy-consuming friction plate (311) and pre-tightens the two energy-consuming clamping plates (34) and the energy-consuming friction plate (311). The upper connecting seat (31) is provided with upper extension plates (312) located on both sides of the energy-consuming friction plate (311), and the lower connecting seat (32) is provided with lower extension plates (322) located on both sides of the docking plate (321). The energy-consuming friction plate (311) is arranged parallel to the wall surface, and the upper extension plate (312) and the lower extension plate (322) are perpendicular to the wall surface. The upper extension plate (312) and the lower extension plate (322) are connected by an energy-consuming connecting plate (33). The two ends of the energy-consuming connecting plate (33) are connected and fixed to the upper extension plate (312) and the lower extension plate (322) respectively by bolts. The energy-consuming connecting plate (33) is an I-shaped low-yield steel plate, and the plate body of the energy-consuming connecting plate (33) has an elongated hole along the vertical direction.

4. A fully prefabricated concrete shear wall according to claim 1, characterized in that, The mounting cavities at the edge corners of the upper shear wall (1) and the lower shear wall (2) are all square mounting cavities of the same size. The end connector is a fully assembled seismic connector (5). The fully assembled seismic connector (5) includes two sets of edge H-beams (52) that are stacked and fixed from top to bottom. The webs of the two edge H-beams (52) are parallel to the wall surfaces of the upper shear wall (1) and the lower shear wall (2).

5. A fully prefabricated concrete shear wall according to claim 4, characterized in that, The upper shear wall (1) and the lower shear wall (2) are equipped with embedded edge end plates (51) that are welded and fixed to the flanges and webs of the edge H-beams (52). The edge end plates (51) are in accordance with the horizontal dimensions and positions of the installation cavities of the upper shear wall (1) and the lower shear wall (2).

6. A fully prefabricated concrete shear wall according to claim 4, characterized in that, Two layers of connecting end plates (53) are arranged between the two edge H-beams (52). The two edge H-beams (52) are welded and fixed to the corresponding connecting end plates (53). The two connecting end plates (53) are connected and fixed by connecting screws (55), nuts and washers. The connecting end plates (53) have symmetrically opened assembly holes (531) on both sides of the web of the edge H-beams (52). The positions of the assembly holes (531) on the two connecting end plates (53) are corresponding. After the connecting screws (55) pass through the assembly holes (531) of the two connecting end plates (53) in the vertical direction, the nuts at both ends of the connecting screws (55) lock the two connecting end plates (53) in place. A double layer of washers (54) is placed between the nuts and the connecting end plates (53). The assembly holes (531) are elongated holes. At least two sets of connecting screws (55) are arranged in the hole of the assembly holes (531).

7. A fully prefabricated concrete shear wall according to any one of claims 1 to 6, characterized in that, The upper fastener (41) also includes an upper pre-embedded screw (412) that is inserted into the seat cavity of the upper fastener (411) from top to bottom along the vertical direction. The lower cantilever of the lower fastener (421) is provided with a lower guide hole (423) corresponding to the position of the upper pre-embedded screw (412). After the upper pre-embedded screw (412) passes through the lower guide hole (423), it is fixed to the lower fastener (421) by bolts. The lower fastener (42) also includes a lower pre-embedded screw (422) that is inserted into the seat cavity of the lower fastener (421) from bottom to top along the vertical direction. The upper cantilever of the upper fastener (411) is provided with an upper guide hole (413) corresponding to the position of the lower pre-embedded screw (422). After the lower pre-embedded screw (422) passes through the upper guide hole (413), it is fixed to the upper fastener (411) by bolts. The upper guide hole (413) and the lower guide hole (423) are arranged parallel to the upper cantilever and the lower cantilever, respectively. The upper guide hole (413) and the lower guide hole (423) are elongated holes with opposite opening directions.

8. A fully prefabricated concrete shear wall according to claim 7, characterized in that, The upper fastener (41) and the lower fastener (42) are fastened together to form a fastening cavity. A fastening clamping device (43) is arranged in the fastening cavity. The fastening clamping device (43) includes a first screw sleeve (431) that abuts against one side of the cavity wall and a second screw sleeve (432) that abuts against the other side of the cavity wall. The two ends of the horizontally arranged adjusting screw (433) are threadedly engaged with the first screw sleeve (431) and the second screw sleeve (432) respectively. An adjusting nut (434) is fixed on the rod of the adjusting screw (433). When the adjusting screw (433) rotates, it drives the first screw sleeve (431) and the second screw sleeve (432) to move in opposite directions or in opposite directions.

9. A fully prefabricated concrete shear wall according to claim 8, characterized in that, The adjusting screw (433) is arranged in a cross shape with the upper pre-embedded screw (412) and the lower pre-embedded screw (422).

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