An energy-consuming enhanced precast shear wall structure and its installation method

Abstract

The present invention belongs to the technical field of prefabricated buildings, and particularly relates to an energy-consuming enhanced prefabricated shear wall structure and an installation method thereof. The shear wall structure includes multiple shear wall units; in the vertical direction, each shear wall unit is provided with a plurality of opening units; there are an odd number of shear wall units, and X-shaped metal pieces are installed in the opening units of the even-numbered shear wall units; a first friction strip is wound in the opening units on the same horizontal height on the shear wall unit; the X-shaped metal pieces connect the two first friction strips to form a wound and bound cross region; horizontal force-bearing plates are arranged on the upper and lower parts of the two side surfaces in the wall thickness direction, and a slidable force-bearing plate is slidably connected to the outside of the horizontal force-bearing plate; a plurality of second friction strips are connected in the slidable force-bearing plate; a connecting short beam is connected between the opposite two side walls of two adjacent shear wall units. The problem that the seismic performance of prefabricated concrete shear walls needs to be strengthened is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of prefabricated buildings, and particularly relates to an energy-dissipation enhanced prefabricated shear wall structure and an installation method thereof. Background Art

[0002] In recent years, prefabricated building structures have been widely used in the field of construction engineering due to their advantages such as fast construction speed, controllable quality, and low environmental pollution. Among them, prefabricated concrete shear walls, as the main lateral force resisting members, their seismic performance directly affects the safety and reliability of building structures. Although traditional cast-in-place concrete shear walls have good integrity and seismic performance, they have problems such as long construction period, difficult quality control, and large environmental pollution. For existing prefabricated concrete shear walls, their connection joints mostly adopt rigid connection methods. Although they can ensure the integrity of the structure, they are prone to brittle failure under seismic action, with limited energy dissipation capacity, and it is difficult to meet the seismic requirements in high-intensity seismic areas.

[0003] In order to improve the seismic performance of prefabricated concrete shear walls, researchers have proposed various improvement schemes, such as setting dampers in the wall body, adopting prestressed connections, etc. However, these methods often have problems such as excessive thickness of the shear wall, high construction difficulty, and high cost, and it is difficult to promote and apply them in actual projects.

[0004] In summary, the seismic performance of existing prefabricated concrete shear walls still needs to be strengthened. Summary of the Invention

[0005] The purpose of the present invention is to provide an energy-dissipation enhanced prefabricated shear wall structure and an installation method thereof, which solves the problem that the seismic performance of prefabricated concrete shear walls needs to be strengthened.

[0006] The present invention is realized through the following technical solutions:

[0007] An energy-dissipation enhanced prefabricated shear wall structure includes multiple shear wall units; in the vertical direction, each shear wall unit is provided with multiple opening units;

[0008] The total number of shear wall units is odd. Among them, X-shaped metal parts are installed in the opening units of the even-numbered shear wall units; the even-numbered shear wall unit and its adjacent two shear wall units form a group of connection units;

[0009] First friction strips are wound in the opening units of the shear wall units at the same horizontal height; the X-shaped metal parts connect the two first friction strips to form a wound and bound cross region;

[0010] Horizontal load-bearing plates are arranged at the upper and lower parts of both side faces in the wall thickness direction, and a slidable load-bearing plate is slidably connected to the outside of the horizontal load-bearing plate; multiple second friction strip belts arranged vertically are connected in the slidable load-bearing plate;

[0011] A connecting short beam is connected between the two opposite side walls of two adjacent shear wall units.

[0012] Furthermore, overhead support plates are vertically arranged at positions close to the opening unit on the two end faces of the shear wall unit in the wall thickness direction, for forming a gap between a part of the first friction strip belt and the shear wall unit.

[0013] Furthermore, a first stress screw is arranged in the opening unit along the wall thickness direction of the shear wall unit, and vertical load-bearing plates are connected to both ends of the first stress screw;

[0014] The horizontal load-bearing plates are arranged at the upper and lower ends of the vertical load-bearing plates, slideways are arranged on the end faces of the horizontal load-bearing plates, and the slidable load-bearing plates are slidably connected to the outside of the slideways;

[0015] The first stress screw penetrates through two limit steel plates, and the two limit steel plates are clamped in the opening unit and connected by tension bolts.

[0016] Furthermore, a first fixing piece is arranged on the outside of the slidable load-bearing plate located at the lower side; end fixing plates are arranged at both ends of the horizontal load-bearing plate located at the lower side; a first self-resetting tension and compression energy dissipation damper is connected between the end fixing plate and the first fixing piece.

[0017] Furthermore, a plurality of first connecting springs are arranged below the slidable load-bearing plate located at the lower side, and a heavy object block is connected below the first connecting springs.

[0018] Furthermore, first fixing pieces are arranged on the outside of the slidable load-bearing plates located at the upper and lower sides; end fixing plates are arranged at both ends of the horizontal load-bearing plates located at the upper and lower sides; a first self-resetting tension and compression energy dissipation damper is connected between the end fixing plate and the first fixing piece.

[0019] Furthermore, a first stress connecting plate is further arranged in the opening unit of the shear wall unit provided with the X-shaped metal piece, the first stress connecting plate extends into the shear wall unit, and the other end of the first stress connecting plate is connected with a torsion spring part;

[0020] The torsion spring part includes a torsion spring and a roller, the torsion spring is detachably connected with the first stress connecting plate, the extending end of the torsion spring is connected with the roller, and the roller abuts against the inner side of the first friction strip belt;

[0021] A ratchet tensioner is installed at one end of the first friction strip belt for tensioning the first friction strip belt.

[0022] Furthermore, a first arc-shaped stress-bearing layer and a second arc-shaped stress-bearing layer are arranged between two opposite side walls of two adjacent shear wall units; the first arc-shaped stress-bearing layer is installed between the two second arc-shaped stress-bearing layers to form a staggered connection;

[0023] The first arc-shaped stress-bearing layer and the second arc-shaped stress-bearing layer abut against each other, and the bottom end of the first arc-shaped stress-bearing layer is buried in the shear wall unit;

[0024] The upper end of the second curved stress-bearing layer located at the uppermost side and the lower end of the second curved stress-bearing layer located at the lowermost side are fixedly connected to the shear wall unit, and the shear wall unit is provided with two first sliding grooves on the side close to the second curved stress-bearing layer, and the first sliding grooves are slidably connected with the first slider, and the first slider is connected to the edge of the second curved stress-bearing layer;

[0025] A second self-resetting tension-compression energy dissipation damper is connected to the side of the second arc-shaped stress-bearing layer of the connecting short beam near the middle of the height of the shear wall unit, and the other end of the second self-resetting tension-compression energy dissipation damper is fixedly connected to the end face of the connecting short beam.

[0026] Furthermore, a plurality of side wall layers are arranged in the first arc-shaped stress-bearing layer, friction discs are arranged between the side wall layers, and the plurality of friction discs are connected in series;

[0027] A first long groove is arranged in the middle of the second arc-shaped stress-bearing layer, a second long groove is arranged in the middle of the first arc-shaped stress-bearing layer, a second fixing part is arranged on the side of the shear wall unit with the second arc-shaped stress-bearing layer, the second fixing part is hinged with a second connecting spring, the other end of the second connecting spring is connected to a connecting rod, the other end of the connecting rod is connected to a friction disk, and a plurality of friction disks are pulled by the connecting rod to rotate synchronously around the side wall layer.

[0028] The present invention also discloses a method for installing the energy-dissipating enhanced assembled shear wall structure, which includes the following steps:

[0029] Install multiple shear wall units at predetermined locations on site, and then install connecting short beams;

[0030] Install X-shaped metal parts in the opening units of the even-numbered shear wall units;

[0031] The first friction strip is wound around two opening units at the same horizontal height, and an X-shaped metal piece is connected to both ends of the first friction strip. During the connection, the first friction strip is tightened to form a winding and binding cross area at the X-shaped metal piece, so that the even-numbered shear wall unit and the adjacent shear wall unit form a group of three connected units;

[0032] When multiple shear wall units are connected into an integral structure, transverse load-bearing plates are installed on the upper and lower parts of the two side surfaces in the wall thickness direction, slidable load-bearing plates are installed on the transverse load-bearing plates, and second friction strips are installed in the slidable load-bearing plates.

[0033] Compared with the prior art, the present invention has the following beneficial technical effects:

[0034] The present invention discloses an energy-consuming enhanced precast shear wall structure, which includes multiple shear wall units. A plurality of opening units are formed on each shear wall unit, and a first friction strip is wound around the opening units at the same horizontal height. The even-numbered shear wall units and the shear wall units connected to the front and rear sides of the even-numbered shear wall units form a set of connection units in total of three pieces, and a winding and binding cross region is formed in the second shear wall unit of each set of connection units, that is, the even-numbered shear wall unit. When the shear wall structure undergoes shear deformation under seismic force, the first friction strip consumes external forces such as seismic energy through friction energy dissipation, thereby reducing the vibration response of the structure. An X-shaped metal part is installed in the opening unit of the even-numbered shear wall unit, which connects the two first friction strips to form a cross-shaped ring body, enhancing the stability of the first friction strip and making the friction energy dissipation mechanism more stable and reliable. Horizontal stress plates are arranged on the upper and lower parts of the two side surfaces in the thickness direction of the wall body. A slidable stress plate is slidably connected to the outside of the horizontal stress plate, and a plurality of second friction strips arranged in parallel vertically are connected in the slidable stress plate. When the shear wall structure undergoes shear deformation, the slidable stress plate will slide relative to the horizontal stress plate, and the second friction strips and the first friction strips will dissipate seismic energy through friction, and at the same time, it can also limit the shear deformation of the shear wall and improve the seismic performance of the structure. Through the connection of the first friction strip and the X-shaped metal part, the cooperative working ability of the shear wall units within each set of connection units is enhanced, and the integrity of the structure in the plane is improved. Horizontal stress plates are arranged on the upper and lower parts of the two side surfaces in the thickness direction of the wall body and are connected through the slidable stress plate, so that multiple shear wall units can better cooperate in force in the vertical direction, enhancing the integrity of the structure in space. A connecting short beam is connected between the opposite two side walls of two adjacent shear wall units, further strengthening the connection between adjacent shear wall units, improving the overall stability of the structure, and enabling the structure to more effectively resist horizontal and vertical loads. Through measures of enhancing energy dissipation capacity and improving structural integrity, the precast shear wall structure can better dissipate energy under seismic action, reduce the seismic response of the structure, reduce the possibility of structural damage, thereby improving the seismic performance of the structure and protecting the safety of personnel and equipment in the building. The shear wall structure of the present invention is a precast structure, and each component can be prefabricated in a factory and then transported to the site for assembly. The precast construction method can reduce the on-site construction cost, improve the construction efficiency, and shorten the construction period. Due to the improvement of the energy dissipation capacity and seismic performance of the structure, the repair and reconstruction costs after disasters such as earthquakes can be reduced.

[0035] Furthermore, a first force-bearing connecting plate is also provided in the opening unit of the shear wall unit provided with the X-shaped metal member. The first force-bearing connecting plate extends into the shear wall unit, and the other end of the first force-bearing connecting plate is connected with a torsion spring part. The design of the torsion spring part enables the first friction strip to possibly become slack when the shear wall undergoes lateral deformation during an earthquake, and the first friction strip can be tightened again by the torsion spring part to ensure that the first friction strip and the second friction strip can continue to work.

[0036] Furthermore, a first arc-shaped force-bearing layer and a second arc-shaped force-bearing layer are provided between the two opposite side walls of adjacent two shear wall units; the shear wall will undergo shear deformation during an earthquake, and the first arc-shaped force-bearing layer and the second arc-shaped force-bearing layer will be squeezed against each other, causing the second arc-shaped force-bearing layer to be squeezed and deformed. The point where the second arc-shaped force-bearing layer is connected to the first slider will slide on the first chute, and the connecting rod may abut against the end of the first long groove, causing the friction disc to rotate, so that the friction disc and the side wall layer dissipate energy through friction.

[0037] Furthermore, a second self-resetting tension-compression energy-dissipating damper is connected to the side of the second arc-shaped force-bearing layer of the connecting short beam near the middle of the height of the shear wall unit. Once the second arc-shaped force-bearing layer starts to deform and move, the second self-resetting tension-compression energy-dissipating damper will be stretched or compressed, and the second self-resetting tension-compression energy-dissipating damper will also dissipate energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic diagram of an energy-dissipation enhanced prefabricated shear wall structure of the present invention;

[0039] Figure 2 is Figure 1 the top view of

[0040] Figure 3 is Figure 1 the front view of

[0041] Figure 4 is a schematic diagram of the connection relationship between the first friction strip and three shear wall units;

[0042] Figure 5 is a schematic diagram of the positional relationship between the X-shaped metal member and the first force-bearing screw;

[0043] Figure 6 is a schematic diagram of the positional relationship between the first force-bearing screw and the shear wall unit;

[0044] Figure 7 is a schematic diagram of the positional relationship between the slidable force-bearing plate and the second friction strip;

[0045] Figure 8 is Figure 7 another perspective of

[0046] Figure 9 Schematic diagram of the connection relationship between the first friction strip and five shear wall units;

[0047] Figure 10 Schematic diagram of the positional relationship between shear wall units;

[0048] Figure 11 Schematic diagram of the structure of Node A;

[0049] Figure 12 Schematic diagram of the positional relationship between the first arc-shaped stress layer and the second arc-shaped stress layer;

[0050] Figure 13 For Figure 12 Another perspective;

[0051] Figure 14 For Figure 1 Another structural schematic diagram transformed on the basis of

[0052] In the figure, 1. Shear wall unit; 11. Opening unit; 12. First friction strip; 13. Second friction strip; 14. Top stress reinforcement; 15. First arc-shaped stress layer; 16. First self-resetting tension-compression energy dissipation damper; 17. Transverse stress plate; 18. End fixing plate; 19. First stress screw; 20. Ratchet tensioner; 21. Slidable stress plate; 22. First fixing part; 23. Overhead support plate; 24. X-shaped metal part; 25. First connection splint; 26. Transition connection sleeve; 27. Outer limit steel plate; 271. Inner limit steel plate; 272. Tightening bolt; 28. Vertical stress plate; 29. Slideway; 30. Second connection splint; 31. First connection spring; 32. Heavy weight block; 33. Second arc-shaped stress layer; 34. First stress connection plate; 35. Torsion spring part; 36. Connecting short beam; 37. First chute; 38. Second self-resetting tension-compression energy dissipation damper; 39. First long slot; 40. First slider; 41. Second fixing part; 42. Second connection spring; 43. Connecting rod; 44. Side wall layer; 45. Second long slot; 46. Friction disc. Specific embodiments

[0053] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further detailed description is provided in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments.

[0054] The components described and illustrated in the accompanying drawings and embodiments of the present invention can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the claimed invention, but merely represents a selected embodiment of the present invention. Based on the accompanying drawings and embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0055] It should be noted that: the term "comprising", "including" or any other variant is intended to cover non-exclusive inclusion, so that a process, element, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to the process, element, method, article or device. In addition, the terms "lateral" and "vertical" are based on the orientation and positional relationship of the device or component shown in the drawings, and are only for better describing the present invention, rather than requiring the shown device, component or device to have this specific orientation, so it cannot be understood as a limitation to the present invention.

[0056] The features and performance of the present invention are further described in detail below in conjunction with embodiments.

[0057] As Figures 1 - 3 shown, the present invention discloses an energy-consuming enhanced prefabricated shear wall structure, including multiple shear wall units 1. The top stressed steel bars 14 are arranged at the upper and lower ends of the shear wall unit 1, and the top stressed steel bars 14 are used for anchoring connection with other shear walls or other structural members in the vertical height of the building. The span direction of the shear wall of the present invention is fixedly connected with the structural beam or structural column.

[0058] In the energy-consuming enhanced prefabricated shear wall structure, "energy-consuming enhanced" means that through certain technical means and structural measures, the structure can more effectively consume energy and enhance the energy-consuming capacity of the structure when resisting external forces such as earthquakes.

[0059] As Figures 1 - 4 shown, in the vertical direction, a plurality of opening units 11 are formed on the shear wall unit 1, and the opening units 11 are rectangular.

[0060] A first friction strip 12 is arranged between the opening units 11 of two adjacent shear wall units 1 at the same horizontal height, and the two first friction strips 12 bind the three shear wall units 1 by winding.

[0061] Generally, chamfers should be noted in the area where the shear wall unit 1 needs to be connected to the first friction strip 12 to avoid wearing the first friction strip 12.

[0062] Figure 4The position of the opening unit 11 in it is only schematic. The opening position of the opening unit 11 in the transverse direction of the shear wall unit 1 can be at the central position or slightly offset, which is specifically designed according to the on-site working conditions.

[0063] As Figure 4 and Figure 5 shown, the first friction strip 12 is provided with an X-shaped metal part 24 in the winding and binding intersection area. Four ends of the X-shaped metal part 24 are all installed with first connection splints 25. The X-shaped metal part 24 fixes and connects the first friction strip 12 through the first connection splints 25 with rivets.

[0064] On both end faces of the shear wall unit 1 in the wall thickness direction, overhead support plates 23 are vertically arranged at positions close to the opening unit 11. The overhead support plates 23 are installed by embedding when being fabricated in the factory of the shear wall unit 1. There are many specific embedding connection methods, which are known to those skilled in the art. Here only one achievable method is given: The overhead support plate 23 is a vertical metal steel plate. A plurality of shear connectors are welded on both sides of the area where the overhead support plate 23 is close to the shear wall unit 1, and the part of the overhead support plate 23 with the welded shear connectors is buried into the shear wall unit 1.

[0065] The function of the overhead support plate 23 is to form a gap between a part of the first friction strip 12 and the shear wall unit 1, so that a part of the first friction strip 12 is parallel to the end face of the shear wall unit 1.

[0066] As Figure 5 shown, a first stress-bearing screw 19 is arranged in the opening unit 11 of the shear wall unit 1 in the wall thickness direction. A transition connection sleeve 26 is connected to the outside of the first stress-bearing screw 19. The transition connection sleeve 26 passes through the X-shaped metal part 24. The transition connection sleeve 26 is used to ensure the connection stability between the X-shaped metal part 24 and the first stress-bearing screw 19.

[0067] As Figure 1 and Figure 6 shown, all the first stress-bearing screws 19 installed in the opening unit 11 on each shear wall unit 1 are jointly connected to a vertical stress-bearing plate 28. Horizontal stress-bearing plates 17 are arranged at the upper and lower ends of all the vertical stress-bearing plates 28. A slideway 29 is arranged on the end face of the horizontal stress-bearing plate 17 far from or close to the shear wall unit 1. The slideway 29 is in the shape of a dovetail. A slidable stress-bearing plate 21 is slidably connected to the outside of the slideway 29. A first fixing part 22 is arranged on the outside of the slidable stress-bearing plate 21.

[0068] As Figure 7 and Figure 8As shown, end fixing plates 18 are provided at both ends of the horizontally stressed plate 17. A first self-resetting tension-compression energy-dissipating damper 16 is provided at the end of the end fixing plate 18 close to the horizontally stressed plate 17, and the other end of the first self-resetting tension-compression energy-dissipating damper 16 is fixedly connected to the first fixing member 22. Second connecting splints 30 are provided on the side edges of the upper and lower horizontally stressed plates 17 close to each other. A plurality of second friction strips 13 arranged in parallel vertically are connected inside the second connecting splints 30 by rivets.

[0069] As Figure 1 and Figure 8 shown, a slidable stressed plate 21 is provided on the horizontally stressed plate 17. The slidable stressed plates 21 on the upper and lower horizontally stressed plates 17 can both slide on the horizontally stressed plate 17. During an earthquake, the shear wall as a whole will undergo shear deformation, and the two slidable stressed plates 21 will slide together on the horizontally stressed plate 17 (moving in the same direction at the same speed or at different speeds). During this process, the first friction strip 12 and the second friction strip 13 will dissipate a large amount of energy through friction; during this process, the first self-resetting tension-compression energy-dissipating damper 16 will also dissipate energy, and finally the two slidable stressed plates 21 will return to their original positions. This structure is suitable for shear walls with a relatively small height-span ratio, that is, when the ratio of the height of the shear wall to the span of the shear wall is relatively small.

[0070] In other alternative embodiments, as Figure 14 shown, end fixing plates 18, the first self-resetting tension-compression energy-dissipating damper 16 and the first fixing member 22 do not need to be provided at both ends of the upper horizontally stressed plate 17. A slidable stressed plate 21 is installed on the horizontally stressed plate 17, and the slidable stressed plate 21 on the upper horizontally stressed plate 17 is locked to the horizontally stressed plate 17, that is, the upper slidable stressed plate 21 cannot slide; the slidable stressed plate 21 on the lower horizontally stressed plate 17 can slide on the horizontally stressed plate 17. During an earthquake, the shear wall as a whole will undergo shear deformation, and the lower slidable stressed plate 21 will slide on the horizontally stressed plate 17. At this time, the second friction strip 13 will perform a pendulum-like movement. During the process, the first friction strip 12 and the second friction strip 13 will dissipate a large amount of energy through friction; during this process, the first self-resetting tension-compression energy-dissipating damper 16 on the lower side will also dissipate energy, and finally the two slidable stressed plates 21 will return to their original positions. Figure 14 The structure is suitable for shear walls with a relatively large height-span ratio, that is, when the ratio of the height of the shear wall to the span of the shear wall is relatively large.

[0071] Specifically, the first friction strip 12 and the second friction strip 13 are made of a high-elastic alloy material, and a rubber outer sleeve is provided on the outer side. Such a setting not only ensures the elasticity, strength, and toughness of the first friction strip 12 and the second friction strip 13, facilitates the processing of the woven structure, and is conducive to stretching and energy dissipation within a small deformation range; the alloy material of the first friction strip 12 and the second friction strip 13 and the rubber outer sleeve are chamfered with each other to avoid damage caused by mutual extrusion due to stress concentration. The high-elastic alloy metal and the high-friction rubber outer sleeve in the first friction strip 12 and the second friction strip 13 are connected by rivets to reduce the slippage between them.

[0072] As Figure 14 shown, more preferably, a plurality of first connecting springs 31 are provided below the slidable stress plate 21, and a heavy object block 32 is connected below the first connecting springs 31. The function of the heavy object block 32 is to increase the sliding frequency of the lower slidable stress plate 21 on the transverse stress plate 17 during an earthquake, thereby increasing the energy dissipation effect of the woven structure.

[0073] As Figure 6 shown, the first stress screw 19 is installed through two limiting steel plates. The limiting steel plates include an outer limiting steel plate 27 and two inner limiting steel plates 271 vertically connected to the outer limiting steel plate 27. The outer limiting steel plate 27 and the inner limiting steel plates 271 are integrally formed, which is convenient for clamping on both sides of the opening unit 11. After the outer limiting steel plate 27 and the inner limiting steel plates 271 are clamped on both sides of the opening unit 11, they are connected by a tension bolt 272 to keep the distance between the two limiting steel plates constant.

[0074] Specifically, rubber pads should be laid on the contact surfaces of the outer limiting steel plate 27 and the inner limiting steel plates 271 with the shear wall unit 1 to facilitate the stable connection of the two outer limiting steel plates 27.

[0075] Holes are opened on the outer limiting steel plate 27 for passing through the first stress screw 19 and the tension bolt 272.

[0076] The number of shear wall units 1 in the shear wall of the present invention should be an odd number and not less than three. As Figure 4 and Figure 9 shown, it is because three shear wall units 1 are connected by a crossed annular first friction strip 12; as Figure 9 shown, when five shear wall units 1 are connected, the X-shaped metal part 24 is not placed in the opening unit 11 of the third shear wall unit 1, and the first friction strip 12 in the opening unit 11 of the third shear wall unit 1 is not cross-wound. That is, the X-shaped metal part 24 is installed in the opening unit 11 of the even-numbered shear wall units 1, and the X-shaped metal part 24 is not installed in the opening unit 11 of the odd-numbered shear wall units 1.

[0077] The even-numbered shear wall units 1, and the front and rear shear wall units 1 of the even-numbered shear wall unit 1, a total of three pieces, form a set of connecting units.

[0078] Preferably, as Figure 4 shown, in the opening unit 11 of the shear wall unit 1 provided with the X-shaped metal part 24 in the present invention, a first force-bearing connecting plate 34 is further provided. The first force-bearing connecting plate 34 extends into the shear wall unit 1, and the other end of the first force-bearing connecting plate 34 is connected with a torsion spring part 35. The torsion spring part 35 includes a torsion spring and a roller. The torsion spring is detachably connected with the first force-bearing connecting plate 34. The extending end of the torsion spring is connected with a roller. The roller abuts against the inner side of the first friction strip 12. The torsion spring part 35 needs to be installed after the ratchet tensioner 20 tightens the first friction strip 12. The function of the torsion spring part 35 is to ensure that when the shear wall of the present invention undergoes shear deformation during an earthquake, when the first friction strip 12 may become slack, the first friction strip 12 can be tightened again by the torsion spring part 35, so as to ensure that the first friction strip 12 and the second friction strip 13 can continue to work.

[0079] The first friction strip 12 and the second friction strip 13 dissipate energy through friction. If the first friction strip 12 is locally slack, the friction energy dissipation effect will be reduced.

[0080] The installation method based on the above structure includes the following processes:

[0081] Install multiple shear wall units 1 at the predetermined positions on site, and then install the connecting short beam 36;

[0082] Install the X-shaped metal part 24 in the opening unit 11 of the even-numbered shear wall unit 1, wind the first friction strip 12 around two adjacent opening units 11 at the same horizontal height, connect the two ends of the X-shaped metal part 24 with the first friction strip 12, and tighten the first friction strip 12 by using the ratchet tensioner 20 during connection;

[0083] Install the transverse force-bearing plate 17 and the slidable force-bearing plate 21, and install the second friction strip 13 in the slidable force-bearing plate 21.

[0084] In other feasible embodiments, such as Figures 10 - 12As shown, a first arc-shaped stress-bearing layer 15 and a second arc-shaped stress-bearing layer 33 are also arranged between adjacent shear wall units 1. The first arc-shaped stress-bearing layer 15 and the second arc-shaped stress-bearing layer 33 are in contact with each other. The bottom end of the first arc-shaped stress-bearing layer 15 is embedded in the shear wall unit 1. The first arc-shaped stress-bearing layer 15 can also be connected to the shear wall unit 1 through embedded parts, and the upper end of the second arc-shaped stress-bearing layer 33 located on the uppermost side and the lower end of the second arc-shaped stress-bearing layer 33 located on the lowermost side are fixedly connected to the shear wall unit 1 through embedded parts. The shear wall unit 1 is provided with two first slide grooves 37 on the side close to the second arc-shaped stress-bearing layer 33. The first slide groove 37 is a dovetail type. A first slider 40 is slidably connected in the first slide groove 37. The top end of the first slider 40 is connected to an edge of a second arc-shaped stress-bearing layer 33 or an edge at the intersection of two second arc-shaped stress-bearing layers 33.

[0085] like Figure 10 As shown, at least one connecting short beam 36 is arranged between adjacent shear wall units 1 at the middle of the height. The connecting short beam 36 is a steel beam, and the connecting short beam 36 is connected to the shear wall unit 1 by embedded parts.

[0086] More preferably, short connecting beams 36 are preferably provided between adjacent shear wall units 1 at the highest and lowest heights. The function of the short connecting beams 36 is to strengthen the connection integrity between the shear wall units 1 .

[0087] like Figure 13 As shown, a plurality of side wall layers 44 are arranged in the first arc-shaped stress-bearing layer 15 , friction discs 46 are arranged between the side wall layers 44 , and the plurality of friction discs 46 are connected in series; a second long groove 45 is arranged in the middle of the first arc-shaped stress-bearing layer 15 .

[0088] like Figure 11 and Figure 12 As shown, a first long groove 39 is provided in the middle of the second arc-shaped stress-bearing layer 33, and a second fixing member 41 is provided on the side of the shear wall unit 1 provided with the second arc-shaped stress-bearing layer 33. The second fixing member 41 is hinged with a second connecting spring 42, and the other end of the second connecting spring 42 is connected to a connecting rod 43, and the other end of the connecting rod 43 is connected to a friction plate 46.

[0089] The friction disc 46 is arranged between the side wall layers 44. The relative surfaces of the friction disc 46 and the side wall layer 44 are both provided with a friction layer. The friction layer can be made of friction rubber. The selection and setting of the friction layer should be set in combination with the overall shear wall of the present invention. The shear deformation of the shear wall unit 1 cannot be significantly reduced, otherwise it will seriously hinder the operation of the first friction strip 12 and the second friction strip 13.

[0090] A plurality of friction discs 46 are connected in series and can be pulled by a connecting rod 43 to rotate synchronously around the side wall layer 44 .

[0091] like Figures 10 - 11As shown, on the side of the second arc-shaped stress layer 33 of the connecting short beam 36 closest to the middle of the shear wall height, a second self-resetting tension-compression energy-dissipating damper 38 is connected, and the other end of the second self-resetting tension-compression energy-dissipating damper 38 is fixedly connected to the end face of the connecting short beam 36.

[0092] As Figures 10 - 13 shown, in an earthquake, the shear wall of the present invention will undergo shear deformation, and the first arc-shaped stress layer 15 and the second arc-shaped stress layer 33 will squeeze each other, causing the second arc-shaped stress layer 33 to be squeezed and deformed. Then, the point where the second arc-shaped stress layer 33 is connected to the first slider 40 will slide on the first chute 37. During the sliding process of the second arc-shaped stress layer 33, the connecting rod 43 may abut against the end of the first long groove 39, causing the friction disk 46 to rotate. Then, the friction disk 46 and the side wall layer 44 dissipate energy through friction. When the shear wall unit 1 undergoes shear deformation, the projection point of the second fixing member 41 on the opposite shear wall unit 1 will also change. Therefore, during an earthquake, the second fixing member 41 will also stretch the connecting rod 43 and cause the friction disk 46 to rotate.

[0093] During an earthquake, once the second arc-shaped stress layer 33 starts to deform and move, the second self-resetting tension-compression energy-dissipating damper 38 will also dissipate energy.

[0094] Based on the energy-dissipation enhanced prefabricated shear wall structure of the present invention as Figure 1 shown, the specific construction sequence is as follows:

[0095] S1. Install the shear wall unit 1 at the predetermined position on-site, and then install the connecting short beam 36;

[0096] S2. Install the first arc-shaped stress layer 15 and the second arc-shaped stress layer 33, and install the second self-resetting tension-compression energy-dissipating damper 38;

[0097] S3. Install the X-shaped metal part 24, and connect the X-shaped metal part 24 to the first friction strip 12. When connecting, use the ratchet tightener 20 to tighten the first friction strip 12;

[0098] S4. Install the torsion spring part 35;

[0099] S5. Install the outer limiting steel plate 27 and the inner limiting steel plate 271, and then install the vertical stress plate 28, the horizontal stress plate 17, and the slidable stress plate 21;

[0100] S6. Install the second friction strip 13 between the slidable stress plates 21;

[0101] S7. After installing the first self-resetting tension-compression energy-dissipating damper 16, adjust the position of the slidable stress plate 21 to complete the installation.

[0102] During the above installation process, after the first arc-shaped stress-bearing layer 15 and the second arc-shaped stress-bearing layer 33 are in contact, the second self-resetting tension-compression energy-dissipating damper 38 should not have obvious initial compression deformation.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the specific implementation manners of the present invention can still be modified or equivalently replaced, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the protection scope of the present invention.

Claims

1. An energy-consuming enhanced prefabricated shear wall structure, characterized in that, It includes multiple shear wall units (1); in the vertical direction, multiple opening units (11) are provided on each shear wall unit (1); The total number of shear wall units (1) is odd. Among them, X-shaped metal parts (24) are installed in the opening units (11) of the even-numbered shear wall units (1); the even-numbered shear wall unit (1) and its adjacent shear wall unit (1) together form a set of connection units with a total of three pieces; First friction strips (12) are wound in the opening units (11) on the same horizontal height of the shear wall unit (1); the X-shaped metal parts (24) connect the two first friction strips (12) to form a wound and bound cross area; Horizontal stress plates (17) are provided at the upper and lower parts of both sides in the wall thickness direction of the wall. A slidable stress plate (21) is slidably connected to the outside of the horizontal stress plate (17); multiple second friction strips (13) arranged vertically are connected in the slidable stress plate (21); A connecting short beam (36) is connected between the opposite two side walls of two adjacent shear wall units (1).

2. The energy-consuming enhanced prefabricated shear wall structure according to claim 1, wherein, Overhead support plates (23) are vertically provided at positions close to the opening units (11) on the two end faces of the shear wall unit (1) in the wall thickness direction, for forming a gap between a part of the first friction strip (12) and the shear wall unit (1).

3. The energy-consuming enhanced prefabricated shear wall structure according to claim 1, wherein A first stress screw (19) is arranged in the opening unit (11) along the wall thickness direction of the shear wall unit (1), and vertical stress plates (28) are connected to both ends of the first stress screw (19); Horizontal stress plates (17) are arranged at the upper and lower ends of the vertical stress plates (28). Slideways (29) are provided on the end faces of the horizontal stress plates (17), and the slidable stress plates (21) are slidably connected to the outside of the slideways (29); The first stress screw (19) passes through two limit steel plates, and the two limit steel plates are clamped in the opening unit (11) and connected by tension bolts (272).

4. A energy consumption enhanced prefabricated shear wall structure according to claim 1, characterized in that, A first fixing part (22) is arranged on the outside of the slidable stress plate (21) at the lower side; end fixing plates (18) are arranged at the two ends of the horizontal stress plate (17) at the lower side; a first self-resetting tension and compression energy dissipation damper (16) is connected between the end fixing plate (18) and the first fixing part (22).

5. The energy-consuming enhanced precast shear wall structure according to claim 4, characterized in that, Multiple first connecting springs (31) are arranged below the slidable stress plate (21) at the lower side, and a heavy object block (32) is connected below the first connecting springs (31).

6. The energy-consuming enhanced prefabricated shear wall structure according to claim 1, characterized in that, First fixing parts (22) are arranged on the outsides of the slidable stress plates (21) at the upper and lower sides; end fixing plates (18) are arranged at the two ends of the horizontal stress plates (17) at the upper and lower sides; a first self-resetting tension and compression energy dissipation damper (16) is connected between the end fixing plate (18) and the first fixing part (22).

7. An energy-consuming enhanced prefabricated shear wall structure according to claim 1, characterized in that, A first stress connecting plate (34) is further arranged in the opening unit (11) of the shear wall unit (1) provided with the X-shaped metal part (24). The first stress connecting plate (34) extends into the shear wall unit (1), and the other end of the first stress connecting plate (34) is connected with a torsion spring part (35); The torsion spring part (35) includes a torsion spring and a roller. The torsion spring is detachably connected to the first force-bearing connecting plate (34). The extending end of the torsion spring is connected to the roller, and the roller abuts against the inner side of the first friction strip (12). A ratchet tensioner (20) is installed at one end of the first friction strip (12) for tensioning the first friction strip (12).

8. A energy-consuming enhanced prefabricated shear wall structure according to claim 1, characterized in that A first arc-shaped force-bearing layer (15) and a second arc-shaped force-bearing layer (33) are arranged between the opposite two side walls of two adjacent shear wall units (1); the first arc-shaped force-bearing layer (15) is installed between two second arc-shaped force-bearing layers (33) to form an interlaced connection; The first arc-shaped force-bearing layer (15) and the second arc-shaped force-bearing layer (33) abut against each other, and the bottom end of the first arc-shaped force-bearing layer (15) is buried in the shear wall unit (1). The upper end of the second arc-shaped force-bearing layer (33) at the uppermost side and the lower end of the second arc-shaped force-bearing layer (33) at the lowermost side are fixedly connected to the shear wall unit (1). Two first sliding grooves (37) are arranged on the side of the shear wall unit (1) close to the second arc-shaped force-bearing layer (33). A first slider (40) is slidably connected in the first sliding groove (37), and the first slider (40) is connected to the edge of the second arc-shaped force-bearing layer (33). A second self-resetting tension and compression energy dissipation damper (38) is connected to the side of the second arc-shaped force-bearing layer (33) of the connecting short beam (36) near the middle of the height of the shear wall unit (1). The other end of the second self-resetting tension and compression energy dissipation damper (38) is fixedly connected to the end face of the connecting short beam (36).

9. The energy-consuming enhanced precast shear wall structure according to claim 8, wherein, A plurality of side wall layers (44) are arranged in the first arc-shaped force-bearing layer (15), and friction discs (46) are arranged between the side wall layers (44). A plurality of friction discs (46) are connected in series. A first long groove (39) is arranged in the middle of the second arc-shaped force-bearing layer (33), and a second long groove (45) is arranged in the middle of the first arc-shaped force-bearing layer (15). A second fixing member (41) is arranged on the side of the shear wall unit (1) provided with the second arc-shaped force-bearing layer (33). The second fixing member (41) is hinged with a second connecting spring (42). The other end of the second connecting spring (42) is connected to a connecting rod (43). The other end of the connecting rod (43) is connected to the friction disc (46). A plurality of friction discs (46) are driven by the connecting rod (43) to rotate synchronously around the side wall layer (44).

10. An installation method for an energy-consuming enhanced precast shear wall structure according to any one of claims 1-9, characterized in that, It includes the following processes: Install multiple shear wall units (1) at the predetermined positions on site, and then install the connecting short beam (36). Install the X-shaped metal part (24) in the opening unit (11) of the even-numbered shear wall unit (1). Wind the first friction strip (12) around two opening units (11) at the same horizontal height, connect the X-shaped metal part (24) to both ends of the first friction strip (12). When connecting, tension the first friction strip (12) to form a winding and binding cross area at the X-shaped metal part (24), so that the even-numbered shear wall unit (1) and its adjacent two shear wall units (1) form a group of connecting units in total. When multiple shear wall units (1) are connected into an integral structure, transverse load-bearing plates (17) are installed at the upper and lower parts of both side surfaces in the wall thickness direction. A slidable load-bearing plate (21) is installed on the transverse load-bearing plate (17), and a second friction strip (13) is installed in the slidable load-bearing plate (21).

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