Prefabricated assembly type shear wall

Abstract

The invention relates to the technical field of assembly type buildings, in particular to a prefabricated assembly type shear wall which comprises a loading beam, a shear wall body, a foundation beam and a friction energy dissipation device, the loading beam is provided with a loading steel structure, the shear steel structure is arranged in the shear wall body, the upper end of the shear wall body is connected with the lower end of the loading steel structure, and the foundation beam is connected with the friction energy dissipation device. And a complete stress system is formed to resist horizontal and vertical loads. The foundation beam is provided with a foundation steel structure. The friction energy dissipation device comprises U-shaped channel steel, H-shaped steel, a first bearing bolt and a second bearing bolt, and the H-shaped steel is installed in the U-shaped channel steel through the first bearing bolt and the second bearing bolt and can rotate relative to the U-shaped channel steel. When external acting force is borne, through the structural design, the shear wall body and the foundation beam rotate relatively, and finally friction resistance generated by the friction energy dissipation device is counteracted with the acting force, so that the structural strength and the anti-seismic property of the fabricated shear wall are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and in particular to a prefabricated assembled shear wall. Background Art

[0002] As China's economy enters a stage of high-quality development, higher requirements are placed on the construction industry - not only safety needs to be ensured, but also livability, green and low-carbon, and sustainability are emphasized. This indicates that China's construction industry is facing a profound structural transformation challenge. However, under the dominance of traditional construction methods, the level of mechanization is low, the construction quality is difficult to control, and the rising labor costs, as well as environmental pollution and noise nuisance during construction have become important factors restricting the development of the industry. Against this background, prefabricated buildings, as an innovative technology, came into being, and it reshaped the future of China's construction industry with significant advantages. Compared with the traditional construction model, prefabricated buildings produce construction units through factory production and then assemble them into a whole at the construction site, which greatly improves the quality and efficiency of construction, greatly reduces on-site wet operations, effectively shortens the project cycle, saves resources and energy consumption, and significantly reduces construction pollution. Its comprehensive quality has been comprehensively improved. Prefabricated concrete shear walls have excellent lateral stiffness and bearing capacity. With the promotion of prefabricated buildings, prefabricated concrete shear walls have been widely used in prefabricated buildings.

[0003] Because prefabricated concrete shear walls are prone to stress concentration at the joints under external loads, which can cause structural failure. The joints of prefabricated concrete shear walls include horizontal joints and vertical joints. The prefabricated horizontal joints refer to the joints between the upper and lower prefabricated shear walls. The reciprocating loading test on the prefabricated concrete shear wall shows that the damage of the prefabricated concrete shear wall mainly occurs in the steel-concrete structure near the horizontal joint. Therefore, in order to improve the structural strength and seismic performance of the prefabricated concrete shear wall, it is necessary to propose a high-strength, seismic-resistant prefabricated concrete shear wall. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a prefabricated assembled shear wall, aiming to improve the structural strength and seismic performance of the assembled shear wall.

[0005] A prefabricated assembled shear wall according to an embodiment of the present invention comprises:

[0006] A loading beam, wherein the loading beam is provided with a loading steel structure;

[0007] A shear wall body, wherein a shear steel structure is arranged in the shear wall body, and the upper end of the shear steel structure is connected to the lower end of the loading steel structure;

[0008] A foundation beam, wherein the foundation beam is provided with a foundation steel structure;

[0009] A friction energy dissipation device, the friction energy dissipation device is provided with a U-shaped channel steel, an H-shaped steel, a first bearing bolt and a second bearing bolt; the opening of the U-shaped channel steel is upward, and the bottom of the U-shaped channel steel is connected to the foundation steel structure; the upper end of the H-shaped steel is connected to the lower end of the shear steel structure, and the lower end of the H-shaped steel is inserted into the U-shaped channel steel; a center hole is provided at the central position of the side wall of the U-shaped channel steel, and a plurality of arc-shaped slot holes are symmetrically provided on both sides of the center hole, and all of the arc-shaped slot holes are linearly arranged along the length direction of the U-shaped channel steel; the center of the arc-shaped slot hole coincides with the center of the center hole; circular holes are provided at the lower part of the H-shaped steel corresponding to the center hole and the arc-shaped slot hole respectively, the first bearing bolt passes through the center hole and the circular hole in sequence, and the second bearing bolt passes through the arc-shaped slot hole and the circular hole in sequence.

[0010] According to some embodiments of the present invention, the shear steel structure includes a first steel cable, which is arranged in an inverted V shape inside the shear wall body; a plurality of clearance holes are provided on the web of the H-shaped steel, and both ends of the first steel cable pass through the lower end of the shear wall body and the clearance holes in sequence, and are respectively rotatably connected to the second bearing bolts.

[0011] According to some embodiments of the present invention, the shear steel structure also includes a second steel cable; one end of the second steel cable is fixed to the upper end of the shear wall body through an anchor assembly; the lower end of the second steel cable passes through the shear wall body and the clearance hole in sequence, and is rotatably connected to the first bearing bolt.

[0012] According to some embodiments of the present invention, both the first steel cable and the second steel cable are unbonded post-tensioned prestressed steel cables.

[0013] According to some embodiments of the present invention, the anchoring assembly includes a pre-tightening spring plate and a locking nut plate, and the upper end of the second steel cable is provided with a threaded end, and the upper end of the threaded end passes through the pre-tightening spring plate and the locking nut plate for threaded connection.

[0014] According to some embodiments of the present invention, two ends of the pre-tightening spring sheet are bent to form an elastic supporting portion.

[0015] According to some embodiments of the present invention, the shear steel structure is provided with a plurality of bearing rods along the inner side of the arrangement path of the first steel cable.

[0016] According to some embodiments of the present invention, a first annular structure is provided at the end of the first steel cable, and a second annular structure is provided at the lower end of the second steel cable; sleeves are respectively sleeved on the first bearing bolt and the second bearing bolt, and the sleeves are respectively loosely matched with the first bearing bolt or the second bearing bolt; the first annular structure and the second annular structure are respectively sleeved on the sleeves.

[0017] According to some embodiments of the present invention, the U-shaped channel steel and the H-shaped steel surround and form a central cavity, and an elastic rubber layer is disposed in the central cavity.

[0018] According to some embodiments of the present invention, a plurality of anchor rods are disposed inside the foundation beam, and the upper ends of the anchor rods are fixedly connected to the bottom of the U-shaped channel steel.

[0019] A prefabricated assembled shear wall according to an embodiment of the present invention has at least the following beneficial effects:

[0020] According to the solution of the present invention, the prefabricated assembled shear wall includes a loading beam, a shear wall body, a foundation beam and a friction energy dissipation device, wherein the loading beam is provided with a loading steel structure for bearing the upper load of the building and transmitting it downward to the shear wall body and the foundation beam. A shear steel structure is provided in the shear wall body, and its upper end is connected to the lower end of the loading steel structure to form a complete force system to resist horizontal and vertical loads. The foundation beam is provided with a foundation steel structure for ultimately transmitting the load from above to the foundation or the next floor. The friction energy dissipation device includes a U-shaped channel steel, an H-shaped steel, a first bearing bolt and a second bearing bolt, wherein the H-shaped steel is installed in the U-shaped channel steel by the first bearing bolt and the second bearing bolt, and can rotate relative to the U-shaped channel steel. The lower end of the shear wall body is connected to the H-shaped steel, and the upper end of the foundation beam is connected to the U-shaped channel steel. When subjected to external forces, such as earthquake forces; through the design of this structure, the shear wall and the foundation beam produce relative rotation and finally the friction resistance generated by the friction energy dissipation device offsets the force, thereby improving the structural strength and seismic performance of the prefabricated shear wall. Thereby achieving the purpose of controlling the energy dissipation effect. In this way, while ensuring the safety of the structure, it can also effectively reduce the degree of damage to the building caused by external impact. At the same time, in this scheme, due to the use of a modular design concept, the installation and maintenance of the entire prefabricated shear wall becomes simple and convenient. In addition, by accurately calculating and selecting appropriate material specifications and parameter settings, the prefabricated shear wall can have better stability and durability when encountering emergencies, and is suitable for various high-rise or super-high-rise residential buildings and large-scale projects such as commercial complexes.

[0021] According to the solution of the present invention, a center hole is provided at the central position of the side wall of the U-shaped channel steel, and multiple arc-shaped slot holes are symmetrically provided on both sides of the center hole, and all the arc-shaped slot holes are linearly arranged along the length direction of the U-shaped channel steel; the center of the arc-shaped slot hole coincides with the center of the center hole; the lower part of the H-shaped steel is provided with circular holes corresponding to the center hole and the arc-shaped slot hole, respectively, and the first bearing bolt passes through the center hole and the circular hole in sequence, and the second bearing bolt passes through the arc-shaped slot hole and the circular hole in sequence. Through the design of this structure, an adjustable friction contact surface between the H-shaped steel and the U-shaped channel steel is realized, thereby forming a dynamic friction energy dissipation mechanism. Specifically, a center hole is provided in the center of the side wall of the U-shaped channel steel, and multiple groups of arc-shaped slot holes are evenly distributed on both sides thereof, and these slot holes are arranged in concentric circles with the center hole. The circular hole opened at the lower end of the H-shaped steel corresponds exactly to the center hole and each arc-shaped slot hole of the U-shaped channel steel, and such a structure allows the H-shaped steel to slide to a certain extent inside the U-shaped channel steel. In actual applications, the first bearing bolt is inserted from the center hole of the U-shaped channel steel and cooperates with the corresponding circular hole on the H-shaped steel, providing a basic fixing point. The second bearing bolt needs to pass through any set of arc-shaped slot holes and their corresponding H-shaped steel circular holes. By setting the center angle of the arc-shaped slot holes, the relative displacement distance of the H-shaped steel in the U-shaped channel steel can be finely controlled. At the same time, the pre-tightening force of the second bearing bolt can control the magnitude of the friction force generated by the H-shaped steel in the U-shaped channel steel. In this way, as the external environment changes or specific loads act, such as vibrations caused by natural disasters such as earthquakes or strong winds, the pre-set friction threshold can be used to enable the entire structure to have the ability to self-adapt and absorb energy, effectively dispersing and consuming the destructive forces that may be brought to the building, and protecting the main structure from major damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A structural schematic diagram of the present invention;

[0023] Figure 2 It is a structural schematic diagram of a steel skeleton of the present invention;

[0024] Figure 3 A schematic structural diagram of a steel skeleton of the present invention from a side view;

[0025] Figure 4 A schematic diagram of the structure of the friction energy dissipation device of the present invention;

[0026] Figure 5 A structural schematic diagram of the U-shaped channel steel of the present invention;

[0027] Figure 6 is a structural schematic diagram of the first steel cable of the present invention;

[0028] Figure 7 is a structural schematic diagram of the second steel cable of the present invention;

[0029] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged local structure at A.

[0030] In the figure:

[0031] 100- loading beam, 110- loading steel structure;

[0032] 200-shear wall, 210-shear steel structure, 211-first annular structure, 220-first steel cable, 230-second steel cable, 231-threaded end, 232-second annular structure, 240-anchor assembly, 241-preloaded spring sheet, 242-locking nut, 243-elastic support portion, 250-bearing rod;

[0033] 300-foundation beam, 310-foundation steel structure, 320-anchor rod;

[0034] 400-friction energy dissipation device, 410-U-shaped channel steel, 411-center hole, 412-arc-shaped slot hole, 420-H-shaped steel, 421-circular hole, 422-web plate, 423-yield hole, 430-first bearing bolt, 440-second bearing bolt, 450-sleeve, 460-center cavity, 470-elastic rubber layer. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0039] Reference Figures 1 to 8 As shown, the present invention discloses a prefabricated assembled shear wall, which includes a loading beam 100, a shear wall body 200, a foundation beam 300 and a friction energy dissipation device 400, wherein the loading beam 100 is provided with a loading steel structure 110; a shear steel structure 210 is provided in the shear wall body 200, and the upper end of the shear steel structure 210 is connected to the lower end of the loading steel structure 110; the foundation beam 300 is provided with a foundation steel structure 310; the friction energy dissipation device 400 is provided with a U-shaped channel steel 410, an H-shaped steel 420, a first bearing bolt 430 and a second bearing bolt 440; the opening of the U-shaped channel steel 410 is upward, and the bottom of the U-shaped channel steel 410 is connected to the foundation steel structure 310; the H-shaped steel 420 The upper end of the H-shaped steel 420 is connected to the lower end of the shear steel structure 210, and the lower end of the H-shaped steel 420 is inserted into the U-shaped channel steel 410; a center hole 411 is provided at the central position of the side wall of the U-shaped channel steel 410, and a plurality of arc-shaped slot holes 412 are symmetrically provided on both sides of the center hole 411, and all the arc-shaped slot holes 412 are linearly arranged along the length direction of the U-shaped channel steel 410; the center of the arc-shaped slot hole 412 coincides with the center of the center hole 411; circular holes 421 are provided at the lower part of the H-shaped steel 420 corresponding to the center hole 411 and the arc-shaped slot hole 412, respectively, the first bearing bolt 430 passes through the center hole 411 and the circular hole 421 in sequence, and the second bearing bolt 440 passes through the arc-shaped slot hole 412 and the circular hole 421 in sequence.

[0040] Specifically, refer to Figures 1 to 5As shown, in this embodiment, the prefabricated assembled shear wall includes a loading beam 100, a shear wall body 200, a foundation beam 300 and a friction energy dissipation device 400, wherein the loading beam 100 is provided with a loading steel structure 110, which is a frame structure formed by welding steel bars, and the loading beam 100 is formed by pouring different types of high-strength concrete on the loading steel structure 110. The loading beam 100 is used to bear the upper load of the building and transfer it downward to the shear wall body 200 and the foundation beam 300. A shear steel structure 210 is provided in the shear wall body 200, which is a frame structure formed by welding steel bars, and the shear wall body 200 is formed by pouring different types of high-strength concrete on the shear steel structure 210. The upper end of the shear steel structure 210 is connected to the lower end of the loading steel structure 110 to form a complete force system to resist horizontal and vertical loads. The foundation beam 300 is provided with a foundation steel structure 310, which is a frame structure formed by welding steel bars. The foundation beam 300 is formed by pouring different types of high-strength concrete on the foundation steel structure 310. The foundation beam 300 is used to finally transfer the load from above to the foundation or the next floor. The friction energy dissipation device 400 includes a U-shaped channel steel 410, an H-shaped steel 420, a first bearing bolt 430 and a second bearing bolt 440, wherein the H-shaped steel 420 is installed in the U-shaped channel steel 410 through the first bearing bolt 430 and the second bearing bolt 440, and can rotate relative to the U-shaped channel steel 410. The lower end of the shear wall 200 is connected to the H-shaped steel 420, and the upper end of the foundation beam 300 is connected to the U-shaped channel steel 410. When subjected to external forces, such as earthquake forces, through the design of this structure, the shear wall 200 and the foundation beam 300 produce relative rotation and finally generate friction resistance through the friction energy dissipation device 400, thereby achieving the purpose of controlling the energy dissipation effect. In this way, while ensuring the safety of the structure, it can also effectively reduce the degree of damage to the building caused by external impact. At the same time, in this solution, due to the use of a modular design concept, the installation and maintenance of the entire prefabricated shear wall becomes simple and convenient. In addition, through accurate calculation and selection of appropriate material specifications and parameter settings, the prefabricated shear wall can have better stability and durability when encountering emergencies, and is suitable for various high-rise or super-high-rise residential buildings and large-scale projects such as commercial complexes.

[0041] In this embodiment, refer to Figure 4 and Figure 5As shown, a center hole 411 is provided at the central position of the side wall of the U-shaped channel steel 410, and multiple arc-shaped slot holes 412 are symmetrically provided on both sides of the center hole 411, and all the arc-shaped slot holes 412 are linearly arranged along the length direction of the U-shaped channel steel 410; the center of the arc-shaped slot hole 412 coincides with the center of the center hole 411; the lower part of the H-shaped steel 420 is provided with circular holes 421 corresponding to the center hole 411 and the arc-shaped slot hole 412, respectively, and the first bearing bolt 430 passes through the center hole 411 and the circular hole 421 in sequence, and the second bearing bolt 440 passes through the arc-shaped slot hole 412 and the circular hole 421 in sequence. Through the design of this structure, an adjustable friction contact surface between the H-shaped steel 420 and the U-shaped channel steel 410 is realized, thereby forming a dynamic friction energy dissipation mechanism. Specifically, a center hole 411 is provided in the center of the side wall of the U-shaped channel steel 410, and multiple groups of arc-shaped slot holes 412 are evenly distributed on both sides thereof, and these slot holes are arranged in a concentric circle with the center hole 411. The circular hole 421 opened at the lower end of the H-shaped steel 420 corresponds exactly to the center hole 411 and each arc-shaped slot hole 412 of the U-shaped channel steel 410. Such a structure allows the H-shaped steel 420 to slide inside the U-shaped channel steel 410 to a certain extent. In actual application, the first bearing bolt 430 penetrates from the center hole 411 of the U-shaped channel steel 410 and cooperates with the corresponding circular hole 421 on the H-shaped steel 420, providing a basic fixing point. The second bearing bolt 440 needs to pass through any group of arc-shaped slots 412 and their corresponding circular holes 421 of the H-shaped steel 420. By setting the central angle of the arc-shaped slots 412, the relative displacement distance of the H-shaped steel 420 in the U-shaped channel steel 410 can be finely controlled. At the same time, the pre-tightening force of the second bearing bolt 440 can control the magnitude of the friction force generated by the H-shaped steel 420 in the U-shaped channel steel 410. In this way, with the changes in the external environment or the action of specific loads, such as vibrations caused by natural disasters such as earthquakes or strong winds, the friction threshold value set in advance can be used to enable the entire structure to have the ability to self-adapt and absorb energy, effectively disperse and consume the destructive force that may be brought to the building, and protect the main structure from major damage. In order to ensure the strength and stability of the connection, by controlling the spacing between each group of arc-shaped slots 412 and the adjacent arc-shaped slots 412, the degree of freedom can be controlled and the overall structure can be prevented from being too loose and the structural strength reduced. In this embodiment, the U-shaped channel steel 410 and the H-shaped steel 420 can be made of high-hardness alloy steel to ensure that they have good wear resistance and fatigue resistance even in long-term service, thereby extending the service life of the equipment. As for the diameter of the center hole 411 and the radius of each arc-shaped slot hole 412, they are opened based on the strength verification results of the first bearing bolt 430 and the second bearing bolt 440. The friction energy dissipation device 400 of this embodiment can effectively deal with the safety issues of buildings under complex and harsh conditions. Improve the overall earthquake resistance and structural strength of the building.

[0042] In some embodiments of the present invention, reference Figure 2 and Figure 4 As shown, the shear steel structure 210 includes a first steel cable 220, which is arranged in an inverted V shape inside the shear wall body 200; a plurality of clearance holes 423 are provided on the web 422 of the H-shaped steel 420, and the two ends of the first steel cable 220 pass through the lower end of the shear wall body 200 and the clearance holes 423 in sequence, and are respectively rotatably connected with the second bearing bolt 440. In this embodiment, the first steel cable 220 is arranged in an inverted V shape and passes through the interior of the shear wall body 200. Specifically, in this embodiment, the arrangement of the first steel cable 220 can be arranged according to the shear force distribution of the shear wall body 200. The two ends of the first steel cable 220 extend out of the lower end of the wall body and form a movable link through the second bearing bolt 440. It ensures that the shear wall can maintain good rigidity and toughness when subjected to lateral force, helps to disperse pressure, and reduces the risk of brittle fracture caused by sudden deformation of the wall body itself.

[0043] In some embodiments of the present invention, reference Figure 2 and Figure 6 As shown, the shear steel structure 210 includes a first steel cable 220, which is arranged in an inverted V shape inside the shear wall body 200; a plurality of clearance holes 423 are provided on the web 422 of the H-shaped steel 420, and the two ends of the first steel cable 220 pass through the lower end of the shear wall body 200 and the clearance holes 423 in sequence, and are respectively rotatably connected with the second bearing bolt 440. Specifically, in this embodiment, the upper end of the second steel cable 230 is fixed to the top of the shear wall body 200 through the anchor assembly 240, and the lower end passes through the shear wall body 200 and enters the web 422 area of ​​the H-shaped steel 420. A plurality of clearance holes 423 are pre-set in the web 422 of the H-shaped steel 420, allowing the second steel cable 230 to pass smoothly, and finally establish a rotational connection relationship with the first bearing bolt 430. This not only strengthens the close fit between the upper and lower ends, but also effectively utilizes the internal space of the structure, and improves the compactness of the overall structure.

[0044] In some embodiments of the present invention, reference Figure 2As shown, the first steel cable 220 and the second steel cable 230 are both non-bonded post-tensioned prestressed steel cables. Specifically, the first steel cable 220 and the second steel cable 230 are both non-bonded post-tensioned prestressed steel cables. Non-bonded post-tensioned prestressed steel cables have the characteristics of high strength and low relaxation rate, can maintain a good mechanical state for a long time after prestressing, and significantly improve the bending and torsion resistance of the component. At the same time, the non-bonded design reduces the chance of direct contact with concrete, prevents rust and chemical erosion, and increases the service life. Specifically, in this embodiment, the prestressed steel cables are in a tensile state at the initial stage. When the building is subjected to external forces, such as earthquake waves, hurricanes, etc., they can release their own stored energy in an instant, quickly compensate for structural deformation, and reduce the pressure on the wall to achieve a buffering effect. In particular, by reasonably designing the position and size of the yield hole 423, and the interaction between the second bearing bolt 440 and the first bearing bolt 430, a more efficient force transmission mechanism is achieved, ensuring that the entire shear wall system can still maintain a high integrity when facing challenges.

[0045] In some embodiments of the present invention, reference Figure 7 and Figure 8 As shown, the anchor assembly 240 includes a pre-tightening spring piece 241 and a locking nut piece 242 , and a threaded end 231 is provided at the upper end of the second steel cable 230 , and the upper end of the threaded end 231 passes through the pre-tightening spring piece 241 and the locking nut piece 242 for threaded connection.

[0046] Specifically, refer to Figure 7 and Figure 8As shown, in this embodiment, the design of the pre-tightening spring piece 241 is intended to increase the contact area, improve the friction coefficient, and ensure that the upper end of the second steel cable 230 is tightly fitted with the shear wall. The spring piece is often made of elastic material, which can be spring steel or other metal materials with good rebound properties. Its shape can be customized according to actual needs, and common ones are wavy shapes, double-layer structures, etc. The design of this structure can improve the locking effect. The locking nut piece 242 is located on the pre-tightening spring piece 241, and through the threaded cooperation with the threaded end 231, the second steel cable 230 is effectively locked. The selection of the locking nut piece 242 should consider its mechanical performance indicators, such as tensile strength, hardness, etc., to ensure stability and reliability throughout the entire service life. Generally, the locking nut piece 242 is made of high-strength steel, and the surface treatment is such as galvanizing or nickel plating to enhance corrosion resistance. When working, first ensure that the top of the shear wall 200 is flat and clean, without foreign matter. And ensure that the threaded end 231 is exposed above the shear wall 200. Place the pre-tightening spring piece 241 above the threaded end 231, paying attention to the direction of the spring piece, and further rotate the locking nut piece 242 by a tool to gradually approach the spring piece until it is completely compressed. In this process, the pre-tightening spring piece 241 is compressed, generating sufficient pre-tightening force, so that the second steel cable 230 forms a stable friction locking effect between the threaded end 231 and the locking nut piece 242, thereby completing the anchoring.

[0047] In some embodiments of the present invention, reference Figure 8 As shown, the two ends of the pre-tightening spring piece 241 are bent to form an elastic support portion 243. Specifically, in this embodiment, the two ends of the pre-tightening spring piece 241 are bent 180° and are parallel to the initial surface. Through the design of this structure, when the locking nut piece 242 is tightened, the elastic support portion 243 will be appropriately deformed, thereby applying additional pressure to the threaded end 231, thereby improving the reliability of the threaded connection and ensuring that the connection part will not easily loosen even in an environment of continuous vibration or temperature changes.

[0048] In some embodiments of the present invention, reference Figure 3 As shown, the shear steel structure 210 is provided with a plurality of bearing rods 250 on the inner side of the arrangement path of the first steel cable 220. By providing the bearing rods 250, the bearing rods 250 abut against the inner side of the first steel cable 220, and the shear force of the first steel cable 220 on the concrete structure in the shear wall body 200 during operation can be reduced. The bearing rods 250 can not only support the first steel cable 220, but also form a continuous support skeleton inside and outside the shear wall body 200, thereby improving the overall anti-shear and anti-twisting capabilities of the shear wall body 200, and especially showing stronger resistance when facing strong vibration or impact.

[0049] In some embodiments of the present invention, reference Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, the end of the first steel cable 220 is provided with a first annular structure 211, and the lower end of the second steel cable 230 is provided with a second annular structure 232; the first bearing bolt 430 and the second bearing bolt 440 are respectively sleeved with a sleeve 450, and the sleeve 450 is respectively loosely matched with the first bearing bolt 430 or the second bearing bolt 440; the first annular structure 211 and the second annular structure 232 are respectively sleeved on the sleeve 450. In this embodiment, by providing the sleeve 450 on the first bearing bolt 430 and the second bearing bolt 440, it is possible to avoid the first bearing bolt 430 or the second bearing bolt 440 from rotating due to the reaction force of the first steel cable 220 or the second steel cable 230, thereby causing the friction energy dissipation device 400 to fail.

[0050] In some embodiments of the present invention, reference Figure 3 As shown, the U-shaped channel steel 410 and the H-shaped steel 420 surround and form a central cavity 460, and an elastic rubber layer 470 is arranged in the central cavity 460. In this embodiment, by filling the elastic rubber layer 470 in the central cavity 460, the elastic rubber layer 470 forms a structural support, shares the force acting on the first bearing bolt 430 and the second bearing bolt 440, can prevent the friction energy dissipation device 400 from relative displacement under normal conditions, and at the same time, can seal the central cavity 460 to isolate oxygen. The anti-seismic performance and service life of the present invention can be significantly enhanced.

[0051] In some embodiments of the present invention, reference Figure 3 As shown, a plurality of anchor rods 320 are provided inside the foundation beam 300, and the upper ends of the anchor rods 320 are fixedly connected to the bottom of the U-shaped channel steel 410. In this embodiment, the upper ends of the anchor rods 320 pass through the bottom of the U-shaped channel steel 410 and are locked by nuts. The anchor rods 320 can firmly fix the U-shaped channel steel 410 and the foundation beam 300 together, thereby improving the overall structural strength.

[0052] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A prefabricated shear wall, characterized in that: include: A loading beam (100), wherein the loading beam (100) is provided with a loading steel structure (110); A shear wall body (200), wherein a shear steel structure (210) is arranged inside the shear wall body (200), and the upper end of the shear steel structure (210) is connected to the lower end of the loading steel structure (110); A foundation beam (300), wherein the foundation beam (300) is provided with a foundation steel structure (310); A friction energy dissipation device (400), wherein the friction energy dissipation device (400) is provided with a U-shaped channel steel (410), an H-shaped steel (420), a first bearing bolt (430) and a second bearing bolt (440); the opening of the U-shaped channel steel (410) is upward, and the bottom of the U-shaped channel steel (410) is connected to the foundation steel structure (310); the upper end of the H-shaped steel (420) is connected to the lower end of the shear steel structure (210), and the lower end of the H-shaped steel (420) is inserted into the U-shaped channel steel (410); a center hole (411) is provided at the central position of the side wall of the U-shaped channel steel (410), and the center hole (411) ) are symmetrically provided with a plurality of arc-shaped slot holes (412) on both sides, and all of the arc-shaped slot holes (412) are linearly arranged along the length direction of the U-shaped channel steel (410); the center of the arc-shaped slot hole (412) coincides with the center of the center hole (411); the lower part of the H-shaped steel (420) is provided with circular holes (421) corresponding to the center hole (411) and the arc-shaped slot hole (412), respectively, the first bearing bolt (430) passes through the center hole (411) and the circular hole (421) in sequence, and the second bearing bolt (440) passes through the arc-shaped slot hole (412) and the circular hole (421) in sequence.

2. The prefabricated shear wall according to claim 1, characterized in that: The shear steel structure (210) comprises a first steel cable (220), and the first steel cable (220) is arranged in an inverted V shape inside the shear wall body (200); a plurality of clearance holes (423) are provided on the web (422) of the H-shaped steel (420), and the two ends of the first steel cable (220) pass through the lower end of the shear wall body (200) and the clearance holes (423) in sequence, and are rotatably connected to the second bearing bolts (440) respectively.

3. The prefabricated shear wall according to claim 2, characterized in that: The shear steel structure (210) further comprises a second steel cable (230); one end of the second steel cable (230) is fixed to the upper end of the shear wall body (200) via an anchor assembly (240); the lower end of the second steel cable (230) passes through the shear wall body (200) and the clearance hole (423) in sequence, and is rotatably connected to the first bearing bolt (430).

4. The prefabricated shear wall according to claim 3, characterized in that: The first steel cable (220) and the second steel cable (230) are both non-bonded post-tensioned prestressed steel cables.

5. The prefabricated shear wall according to claim 2, characterized in that: The anchoring assembly (240) comprises a pre-tightening spring piece (241) and a locking nut piece (242); the upper end of the second steel cable (230) is provided with a threaded end (231); the upper end of the threaded end (231) passes through the pre-tightening spring piece (241) and the locking nut piece (242) for threaded connection.

6. The prefabricated shear wall according to claim 5, characterized in that: Both ends of the pre-tightening spring sheet (241) are bent to form an elastic supporting portion (243).

7. The prefabricated shear wall according to claim 2, characterized in that: The shear steel structure (210) is provided with a plurality of bearing rods (250) on the inner side of a path along which the first steel cable (220) is laid.

8. The prefabricated shear wall according to claim 3, characterized in that: A first annular structure (211) is provided at the end of the first steel cable (220), and a second annular structure (232) is provided at the lower end of the second steel cable (230); sleeves (450) are respectively sleeved on the first bearing bolt (430) and the second bearing bolt (440), and the sleeves (450) are respectively loosely matched with the first bearing bolt (430) or the second bearing bolt (440); the first annular structure (211) and the second annular structure (232) are respectively sleeved on the sleeves (450).

9. The prefabricated shear wall according to claim 1, characterized in that: The U-shaped channel steel (410) and the H-shaped steel (420) surround and form a central cavity (460), and an elastic rubber layer (470) is disposed in the central cavity (460).

10. The prefabricated shear wall according to claim 1, characterized in that: A plurality of anchor rods (320) are arranged inside the foundation beam (300), and the upper ends of the anchor rods (320) are fixedly connected to the bottom of the U-shaped channel steel (410).

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