Opposite-pulling structure for superimposed shear wall and wall body

Abstract

The utility model relates to the technical field of modular buildings, in particular to an opposite-pulling structure and a wall body for a laminated shear wall, the laminated shear wall comprises precast concrete wallboards on the two sides, and the opposite-pulling structure comprises two fixing plate assemblies which can be fixedly installed on the opposite side faces of the precast concrete wallboards on the two sides. The telescopic connecting assembly is connected with the fixing plate assemblies on the two sides, and the fixing plate assemblies on the two sides can be tensioned in a telescopic mode to eliminate the installation gap between the prefabricated concrete wall plates on the two sides. And the operation assembly is detachably connected with the telescopic connecting assembly, and the operation assembly can drive the telescopic connecting assembly to conduct tensioning. The opposite-pulling structure has the beneficial effects that compared with the prior art, the opposite-pulling structure performs opposite pulling from the interior of the laminated shear wall, and the telescopic connecting assembly is matched with the operation assembly, so that the installation gap can be eliminated, the wall bodies on the two sides can be tensioned, the bearing capacity of the wall bodies is ensured, and the damage to the decorated wall surface of the prefabricated concrete wall plate is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to modularization building technical field especially relates to a pair of pull structure and wall body for superimposed shear wall. BACKGROUND

[0002] In modularization building, the inner wall of the structure will be split and belong to two different modules due to the splitting of the modules. To save materials, the walls belonging to two modules generally form a cavity in the center and are combined into a superimposed shear wall by cast-in-place concrete. Since pouring concrete in the cavity will form horizontal pressure, it is necessary to install a pair of pull bolts when pouring, as in the traditional wall construction method. In modularization building, especially concrete module boxes, the interior has been decorated, and the installation of a pair of pull bolts will damage the decoration, reduce the practicality of modularization building, and easily cause concrete leakage during pouring, causing great subsequent problems.

[0003] The prior art, Chinese patent CN117127714A proposes a concrete module structure system and its wall body, which can avoid damage to the decoration by an inner pair of pull systems when pouring the middle cavity of the superimposed shear wall. However, when installing the connecting piece, there is a certain gap to facilitate construction, which makes the thickness of the middle cavity larger than the original design value. This gap is called installation gap. This method still has two problems: first, due to the installation gap for installing the pair of pull expansion connection components, the existence of the installation gap will make the wall pouring thickness thicker than the design thickness when pouring concrete; second, the hollow steel is embedded in the prefabricated concrete wall, which weakens the bearing capacity of the prefabricated concrete wall and easily causes damage to the prefabricated concrete wall due to pouring pressure when pouring concrete in the cavity.

[0004] Therefore, there is an urgent need for a pair of pull structure and wall body for superimposed shear wall that tightens both sides of the wall, eliminates the installation gap, and ensures the bearing capacity of the wall. INVENTION CONTENTS

[0005] (I) Technical problem to be solved

[0006] In view of the above shortcomings and deficiencies of the prior art, the utility model provides a pair of pull structure and wall body for superimposed shear wall, which solves the technical problems of the prior art of tightening both sides of the wall while leaving an installation gap and reducing the bearing capacity of the wall.

[0007] (II) Technical solution

[0008] In order to achieve the above purpose, the utility model adopts the main technical scheme comprising:

[0009] In a first aspect, the utility model discloses a kind of tensioning structures for laminated shear wall, laminated shear wall includes two interval precast concrete wallboards, tensioning structure includes: two fixed plate components, can be fixedly installed on the opposite side of two precast concrete wallboards;Telescopic connecting component, two ends are connected with two fixed plate components, can be through telescopic tensioning two sides fixed plate component to eliminate the installation gap between two sides precast concrete wallboard;Operating component, detachably connected with telescopic connecting component, operating component can drive telescopic connecting component to tighten two sides fixed plate component when being connected with connecting component.

[0010] Optionally, the telescopic connecting component includes two end plates, a sleeve and two screw rods; the sleeve is provided with internal threads, the sleeve is threadedly connected with one end of the screw rod, the other end of the screw rod is fixedly connected with one end of the end plate, and the other end of the end plate is connected with the fixed plate component.

[0011] Optionally, the fixed plate component includes a connecting plate and an anchoring plate; one end of the anchoring plate is fixedly installed on the precast concrete wallboard, one end of the connecting plate is fixedly connected with the other end of the anchoring plate, and the other end of the connecting plate can be connected with the end plate; the connecting plate is horizontally arranged and perpendicular to the anchoring plate.

[0012] Optionally, a plurality of anchoring steel bars are uniformly arranged along the anchoring plate; the plurality of anchoring steel bars are transversely embedded in the precast concrete wallboard; one end of the anchoring steel bar is fixedly connected with the anchoring plate; the anchoring steel bar is perpendicular to the end plate and the number of the anchoring steel bar is greater than or equal to 4.

[0013] Optionally, the sleeve is further provided with a nut on the outer surface, the bottom surface of the nut is fixedly connected with the sleeve, and the nut is parallel to the end plate.

[0014] Optionally, the operating component includes an operating rod and a rope; the rope is wound around the sleeve and can pull the sleeve to rotate; the sleeve drives the screw rods at two ends to rotate into the sleeve to tighten the fixed plate components on two sides; the bottom of the operating rod is provided with threads and is threadedly connected with the nut; the operating rod can be used to place the telescopic connecting component on the fixed plate component; the operating rod can also drive the sleeve to rotate to a certain extent, thereby driving the screw rods at two ends of the sleeve to rotate into the sleeve.

[0015] Optionally, the connecting plate is fixedly provided with a fixing piece at the connecting position with the end plate; the end plate is provided with a through hole; the size of the through hole is greater than the size of the fixing piece; the end plate can be nested with the fixing piece to form a connection through the through hole.

[0016] Optionally, two elastic metal sheets are arranged on the two sides of the fixing piece and parallel to the anchoring plate; the elastic metal sheet is configured to have a certain bending angle and can be deformed and rebounded; one end of the elastic metal sheet is fixedly connected with the fixing piece; when the end plate is nested with the fixing piece, the other end of the elastic metal sheet can be pressed down; the other end of the elastic metal sheet is reset after the nesting of the end plate is completed, thereby preventing the end plate from being separated.

[0017] Secondly, this utility model provides a wall, including a tie structure for stacking shear walls. The wall also includes an outer template fixedly connected between the two sides of two spaced precast concrete wall panels. The outer template and the precast concrete wall panels form a wall casting space. The two spaced precast concrete wall panels are connected as one unit by pouring concrete into the casting space.

[0018] Optionally, the tie structures on the precast concrete wall panel are arranged with a horizontal spacing of 350-450mm, a vertical distance from the bottom surface of 800-900mm, a vertical distance from the top surface of 1200-1400mm, and a vertical distance between the tie structures of 800-1000mm.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides a tie structure and wall for a composite shear wall. The composite shear wall includes two precast concrete wall panels on both sides. The tie structure includes: two fixing plate assemblies, which can be fixedly installed on the opposite sides of the two precast concrete wall panels; a telescopic connection assembly, which is connected to the two fixing plate assemblies and can eliminate the installation gap between the two precast concrete wall panels by telescopically tightening the two fixing plate assemblies; and an operating assembly, which is detachably connected to the telescopic connection assembly and can drive the telescopic connection assembly to tighten. Compared with the prior art, this tie structure pulls from inside the composite shear wall. By using the cooperation of the telescopic connection assembly and the operating assembly, installation gaps can be eliminated, the walls on both sides can be tightened, the load-bearing capacity of the wall can be guaranteed, and damage to the already finished surface of the precast concrete wall panels can be avoided. Attached Figure Description

[0022] Figure 1 This is a top view of Embodiment 1 of the tie structure for composite shear walls of the present invention, wherein the sleeve on this side of the top view is transparent in order to clearly show the tie structure;

[0023] Figure 2 for Figure 1 A cross-sectional view along the AA direction of the tension structure for composite shear walls is shown;

[0024] Figure 3 for Figure 1 The top view of the telescopic connection assembly in the tie structure for composite shear walls is shown, wherein the sleeve is transparent on this side of the top view to clearly show the inside of the sleeve;

[0025] Figure 4 for Figure 3A sectional view along B-B of the telescopic connecting assembly in the counter-pulling structure for the composite shear wall is shown.

[0026] Figure 5 For Figure 1 A side view of the sleeve and the rope in the counter-pulling structure for the composite shear wall is shown.

[0027] Figure 6 For Figure 1 A sectional view along the direction of the elastic metal sheet in the counter-pulling structure for the composite shear wall is shown.

[0028] Figure 7 A side view of the wall body of Embodiment 2 of the present application is shown, in which, in order to clearly show the counter-pulling structure of the composite shear wall, the side sleeve and the fixing member are transparent on the side view.

[0029] Figure 8 A partial top view of Embodiment 3 of the counter-pulling structure for the composite shear wall of the present application is shown, in which, in order to clearly show the structure, only the telescopic connecting assembly is shown and the sleeve is transparent on the top view.

[0030]

Explanation of Reference Signs

[0031] 1: prefabricated concrete wall plate

[0032] 2: fixed plate assembly; 21: connecting plate; 22: anchoring plate; 23: fixing member

[0033] 3: telescopic connecting assembly; 31: end plate; 32: sleeve; 33: screw rod; 34: nut; 35: elastic metal sheet

[0034] 4: operation assembly; 41: operation rod; 42: rope

[0035] 5: anchoring steel bar DETAILED DESCRIPTION

[0036] In order to better explain the present application and facilitate understanding, the present application is described in detail below through specific embodiments with reference to the accompanying drawings.

[0037] Embodiment 1

[0038] With reference to Figures 1 to 6 , the present embodiment provides a counter-pulling structure for a composite shear wall and a wall body, the composite shear wall comprising two prefabricated concrete wall plates 1, the counter-pulling structure being used for counter-pulling of the two prefabricated concrete wall plates 1. Specifically, the counter-pulling structure for the composite shear wall of the present embodiment comprises two fixed plate assemblies 2, a telescopic connecting assembly 3 and an operation assembly 4, which are described in detail as follows.

[0039] The two fixed plate assemblies 2 in the embodiment can be fixedly installed on the opposite sides of the two prefabricated concrete wall panels 1. The telescopic connecting assemblies 3 are connected with the two fixed plate assemblies 2 and can eliminate the installation gap between the two prefabricated concrete wall panels 1 by telescoping and tensioning the two fixed plate assemblies 2. The operation assemblies 4 are detachably connected with the telescopic connecting assemblies 3, and the operation assemblies 4 can drive the telescopic connecting assemblies 3 to be tensioned. The prefabricated concrete wall panel 1 is composed of two wall surfaces of a composite shear wall, and the prefabricated concrete wall panel 1 in the embodiment is composed of two opposite wall surfaces of a box-shaped module. Therefore, the fixed plate assemblies 2 installed on the opposite sides of the two prefabricated concrete wall panels 1 are actually installed on the two opposite wall surfaces of the box-shaped module. The fixed plate assemblies 2 can be rectangular, circular, or other regular polygons in shape. Preferably, the square fixed plate assemblies 2 can better bear the tensioning force of the telescopic connecting assemblies 3, are compatible in size with the telescopic connecting assemblies 3, and are selected in material to be firm and easy to process. In addition, the implementation site is a construction site. Therefore, the most suitable material is steel, and the square steel plate is easy to process, firm in texture, and does not waste materials. The fixed installation methods include anchoring, bonding, and integrating the fixed plate assemblies 2 with the prefabricated concrete wall panels 1. The telescopic connecting assemblies 3 are located between the two fixed plate assemblies 2 and can tension the two fixed plate assemblies 2, i.e., the two prefabricated concrete wall panels 1, by telescoping. In addition, the telescopic connecting assemblies 3 can also maintain a certain connection strength to resist the pressure on the two sides of the two prefabricated concrete wall panels 1 when they bear the cast concrete. The connection methods of the telescopic connecting assemblies 3 and the fixed plate assemblies 2 include clamping, welding, and threaded connection. The operation assemblies 4 can drive the telescopic connecting assemblies 3 to be tensioned, i.e., the operation assemblies 4 can provide power for the telescopic connecting assemblies 3 to be tensioned. The detachable connection methods of the operation assemblies 4 and the telescopic connecting assemblies 3 include buckle connection, elastic connection, and plug-in connection.

[0040] In summary, compared with the prior art, the pair of tensioning structures can tension from the inside of the composite shear wall, use the cooperation of the telescopic connecting assemblies 3 and the operation assemblies 4 to eliminate the installation gap, tension the two wall bodies, ensure the bearing capacity of the wall body, and avoid damaging the wall surface of the prefabricated concrete wall panel 1 that has been decorated.

[0041] Preferably, in order to realize the telescopic connection of the telescopic connection assembly 3, the telescopic connection assembly 3 comprises two end plates 31, a sleeve 32 and two screw rods 33. The sleeve 32 is internally threaded, and the two ends of the sleeve 32 are threadedly connected with one end of the two screw rods 33, and the other end of the two screw rods 33 is fixedly connected with one end of the two end plates 31, and the other end of the two end plates 31 is connected with the two fixed plate assemblies 2. The sleeve 32 is internally threaded, and the screw rod 33 has a corresponding external thread. The telescopic connection assembly 3 realizes the change of the length of the overall telescopic connection assembly 3 by the cooperation of the two screw rods 33 and the sleeve 32. The sleeve 32 can be rotated to screw the two screw rods 33 into the middle cavity of the sleeve 32. The sleeve 32 has sufficient length for the screw rod 33 to be screwed in, thereby adjusting the length of the telescopic connection assembly 3. The sleeve 32 and the screw rod 33 are connected in advance to a certain length, which ensures that the screw rod 33 will not fall off the sleeve 32. The other end of the screw rod 33 is provided with the end plate 31, and the end plate 31 is connected with the fixed plate assembly 2. The tension of the telescopic connection assembly 3 is transmitted to the fixed plate assembly 2 through the connection of the end plate 31 and the fixed plate assembly 2, and then the two prefabricated concrete wall panels 1 are tensioned. The combination of the telescopic connection assembly 3 and the fixed plate assembly 2 can be regarded as a kind of connecting steel bar, which improves the strength of the composite shear wall. Moreover, the adjustable performance of the telescopic connection assembly 3 is suitable for various scenes where it is inconvenient to pull on the outside. The length that the two screw rods 33 can be screwed into the sleeve 32 is the length that the telescopic connection assembly 3 can adjust. The connection mode of the end plate 31 and the fixed plate assembly 2 includes welding, bonding and clamping.

[0042] Preferably, in order to realize the fixing of the fixed plate assembly 2, the fixed plate assembly 2 comprises a connecting plate 21 and an anchor plate 22. The anchor plate 22 is fixedly installed on the prefabricated concrete wall panel 1 at one end, and the connecting plate 21 is fixedly connected with the other end of the anchor plate 22 at one end, and the other end of the connecting plate 21 can be connected with the end plate 31. The connecting plate 21 is horizontally arranged and perpendicular to the anchor plate 22. The fixed installation mode of the anchor plate 22 and the prefabricated concrete wall panel 1 is the same as the fixed installation mode of the fixed plate assembly 2 and the prefabricated concrete wall panel 1. The fixed connection mode of the other end of the anchor plate 22 and one end of the connecting plate 21 includes integral molding, bonding and welding of the connecting plate 21 and the anchor plate 22. The connection mode of the other end of the connecting plate 21 and the end plate 31 can be detachable connection, including clamping and bonding, or fixed connection, including threaded connection and welding. The connecting plate 21 is horizontally arranged and perpendicular to the anchor plate 22, which is conducive to the placement of the telescopic connection assembly 3 and the transmission of force during pulling. Even if the fixed plate assembly 2 is not provided one by one during prefabrication, the telescopic connection assembly 3 can be connected with the fixed plate assemblies 2 on both sides, effectively pulling together, and greatly improving the fault tolerance rate of the position of the fixed plate assembly 2 during processing.

[0043] Preferably, a plurality of anchoring steel bars 5 are evenly arranged along the anchoring plate 22, and are transversely embedded in the prefabricated concrete wall panel 1. One end of the anchoring steel bar 5 is fixedly connected to the anchoring plate 22, and the anchoring steel bar 5 is perpendicular to the end plate 31 and has a number greater than or equal to 4. One end of the anchoring steel bar 5 is embedded in the prefabricated concrete wall panel 1, and the other end is exposed. The other end of the anchoring steel bar 5 is fixedly connected to the anchoring plate 22, and the fixed connection mode includes welding, bonding and threaded connection, etc. The anchoring steel bar 5 is transversely arranged in the prefabricated concrete wall panel 1, so that the anchoring steel bar 5 is perpendicular to the anchoring plate 22. In order to ensure sufficient anchoring strength, the number of anchoring steel bars 5 is required to be greater than or equal to 4.

[0044] Preferably, in order to realize detachable connection with the operating assembly 4, the outer surface of the sleeve 32 is further provided with a nut 34, and the bottom surface of the nut 34 is fixedly connected to the sleeve 32 and the nut 34 is parallel to the end plate 31. The operating assembly 4 includes an operating rod 41 and a rope 42. The rope 42 is wound around the sleeve 32 and can pull the sleeve 32 to rotate, and the sleeve 32 drives the two end screws 33 to rotate into the sleeve 32 to tighten the fixed plate assembly 2 on both sides. The bottom of the operating rod 41 has a thread and is threadedly connected to the nut 34. The operating rod 41 can be used to place the telescopic connecting assembly 3 on the fixed plate assembly 2, and the operating rod 41 can also drive the sleeve 32 to rotate, thereby driving the two end screws 33 of the sleeve 32 to rotate to a certain extent. The outer surface of the sleeve 32 is the outermost circular surface of the sleeve 32, and the top surface of the nut 34 is the surface facing the bolt head or the outside. The other surface opposite to the top surface is the bottom surface. The bottom surface of the nut 34 is fixedly connected to the outer surface of the sleeve 32, and the top and bottom surfaces of the nut 34 are parallel to the end plate 31. This has the advantage that when the operating rod 41 is connected to the nut 34, we can intuitively observe the placement situation when placing the telescopic connecting assembly 3 from top to bottom, and whether it is placed in the specified position. The operating assembly 4 further includes a rope 42, which can be wound around the sleeve 32. The rope 42 has a certain friction with the sleeve 32, and the rope 42 can drive the sleeve 32 to rotate, thereby realizing the rotation of the screw 33. The material of the rope 42 is not limited, and can be cotton thread, nylon thread, steel wire, etc. The rope 42 can be fixed to the sleeve 32, directly bonded to the sleeve 32 and then wound, or can not be fixed to the sleeve 32, directly wound and rotated. When the operating rod 41 places the telescopic connecting assembly 3 in the specified position, the operating rod 41 can also drive the sleeve 32 to rotate, thereby realizing a certain degree of rotation and tightening the connection between the telescopic connecting assembly 3 and the fixed assembly. Of course, one end of the operating rod 41 can be provided as a clamping piece, and the sleeve 32 is connected with a corresponding clamping groove to control the connection between the operating rod 41 and the sleeve 32. A magnet block can also be fixedly connected to one end of the operating rod 41 to connect with the sleeve 32. The connection form is not limited to this.

[0045] Preferably, the connection between the specific connecting plate 21 and the end plate 31 is fixed with a fixing part 23 at the connecting position of the connecting plate 21 and the end plate 31, and the end plate 31 is provided with a through hole with a size larger than that of the fixing part 23, and the end plate 31 can be nested with the fixing part 23 to form a connection. The connection mode of the fixing part 23 and the connecting plate 21 includes welding, integral molding, bonding and riveting, etc. The height of the fixing part 23 is greater than the thickness of the end plate 31, and in order to more easily nest the end plate 31 on the fixing part 23, the size of the through hole on the end plate 31 is larger than that of the fixing part 23.

[0046] Preferably, in order to fix the connection between the end plate 31 and the fixing part 23, two elastic metal sheets 35 are arranged on both sides of the fixing part 23 in the direction of the parallel anchor plate 22, the elastic metal sheet 35 is configured to have a certain bending angle and can be deformed and rebounded, one end of the elastic metal sheet 35 is fixedly connected with the fixing part 23, and the other end of the elastic metal sheet 35 can be pressed when the end plate 31 is nested on the fixing part 23, and the other end of the elastic metal sheet 35 is reset after the nesting of the end plate 31 is completed, thereby preventing the end plate 31 from being separated. The elastic metal sheet 35 is a metal sheet with a certain bending angle, and has a certain elastic potential energy after the bending angle is reduced under pressure, and can return to the original position after being separated from the corresponding pressure. Two elastic metal sheets 35 are arranged in the direction of the parallel anchor plate 22, and when the through hole on the end plate 31 is nested with the fixing part 23, the elastic metal sheet 35 can be pressed to reduce the bending angle of the elastic metal sheet 35, and when the end plate 31 is lowered to the lowest position, the elastic metal sheet 35 is separated from the pressing of the end plate 31, and the reset force of the elastic metal sheet 35 drives the elastic metal sheet 35 to reset, at this time, the end plate 31 is clamped on the fixing part 23 by the elastic metal sheet 35.

[0047] Embodiment 2:

[0048] With reference to Figure 7 In this embodiment, a wall body is provided. Specifically, the wall body includes the pair of tension structures, as described in detail below.

[0049] In this embodiment, the wall body further includes an outer formwork fixedly connected between two sides of the two spaced precast concrete wall panels 1, the outer formwork and the precast concrete wall panels 1 form a wall pouring space, and the two spaced precast concrete wall panels 1 are connected into one body by pouring concrete into the pouring space. By arranging a plurality of pairs of tension structures between the two spaced precast concrete wall panels 1, on the one hand, the tension structures can provide a pulling force to resist the horizontal pressure of the concrete on the two precast concrete wall panels 1 when the concrete is poured into the pouring space, and on the other hand, the strength of the wall body can be improved. Each part of the tension structure has high strength, and the arrangement can enhance the strength of the wall body as an internal reinforcement.

[0050] Preferably, in order to achieve better pulling effect, the arrangement of the pulling structure on the prefabricated concrete wallboard 1 is that the horizontal spacing is within the range of 350-450 mm, the distance from the bottom surface in the vertical direction is within the range of 800-900 mm, the distance from the top surface is within the range of 1200-1400 mm, and the vertical distance between the pulling structures is within the range of 800-1000 mm. In this embodiment, the height of the wallboard ranges from 2.8 to 3.3 m, corresponding to two rows of pulling structures. This arrangement can uniformly pull the prefabricated concrete wallboard 1 on both sides and ensure that the prefabricated concrete wallboard 1 can withstand the horizontal pressure during pouring of concrete.

[0051] Embodiment 3:

[0052] The difference between this embodiment and embodiment 1 is that the number of nuts 34 is different. Specifically, in embodiment 1, the bottom surface of the nut 34 is fixedly connected with the sleeve 32 and the nut 34 is parallel to the end plate 31, while in this embodiment, the bottom surface of the nut 34 is fixedly connected with the sleeve 32 and a plurality of nuts 34 are arranged along the outer surface of the sleeve 32, at least one of which is parallel to the end plate 31. Other related structures are adaptively modified, as described below in detail.

[0053] Referring to Figure 8 In this embodiment, the nut 34 parallel to the end plate 31 is threadedly connected with the operating rod 41. After the operating rod 41 lowers the telescopic connecting assembly 3 to the designated position, the operating rod 41 can drive the sleeve 32 to rotate, thereby driving the threaded rods 33 at both ends of the sleeve 32 to rotate to a certain extent. However, the fixed plate assembly 2 is fixedly installed on two prefabricated concrete wallboards 1 arranged at intervals. During the tightening process, there is a gap between the end plate 31 and the fixing member 23 at the beginning, and the tightening is relatively easy. However, as the gap disappears and the fixing member 23 is tightened, the force required for use becomes larger and larger. In this embodiment, when the construction personnel find it difficult to pull the sleeve 32 to rotate by the rope 42, the construction personnel can hold the operating rod 41 at the top of the box-shaped module to displace and drive the sleeve 32 to rotate. When the construction personnel displaces to the length limit of the operating rod 41 and cannot continue to displace, the construction personnel holds the operating rod 41 away from the nut 34, returns to the symmetrical position about the telescopic connecting assembly 3 compared with the length limit position, threadedly connects the operating rod 41 with the nut 34 most convenient for connection at this position, and repeats the displacement to the length limit of the operating rod 41. Since the operating rod 41 has a large length, according to the lever theorem, the construction personnel can drive the sleeve 32 to rotate by using a smaller force, thereby tightening the telescopic connecting assembly 3. The above operation is repeated until the distance between the two prefabricated concrete wallboards 1 arranged at intervals reaches the design value and the installation gap is eliminated. The rope 42 and the operating rod 41 are cooperated to jointly act, so that the telescopic connecting assembly 3 can be tightened in place by using a smaller force.

[0054] In the description of the utility model, it is necessary to understand that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0055] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0056] In the utility model, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature, can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature, can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is lower than that of the second feature.

[0057] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0058] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model, and those skilled in the art can modify, modify, replace and change the above embodiments within the scope of the utility model.

Claims

1. A counter-pulling structure for a composite shear wall comprising two prefabricated concrete wall panels (1) arranged at a distance from each other, characterized in that, The pair of pull structures comprises: Two fixed plate assemblies (2) capable of being fixedly installed on the opposite sides of the two prefabricated concrete wallboards (1); A telescopic connecting assembly (3) connected with the two fixed plate assemblies (2) at both ends and capable of tightening the two fixed plate assemblies (2) by shortening itself; An operating assembly (4) detachably connected with the telescopic connecting assembly (3), the operating assembly (4) being capable of tightening the two fixed plate assemblies (2) by driving the telescopic connecting assembly (3) when connected with the telescopic connecting assembly (3).

2. The pair of pull structures for the composite shear wall according to claim 1, wherein The telescopic connecting assembly (3) comprises two end plates (31), a sleeve (32) and two screw rods (33); The sleeve (32) is provided with internal threads, the sleeve (32) is threadedly connected with one end of the two screw rods (33) at both ends, one end of the two screw rods (33) is fixedly connected with two end plates (31), and the other end of the two end plates (31) is connected with the two fixed plate assemblies (2).

3. The pair of pull structures for the composite shear wall according to claim 2, wherein The fixed plate assembly (2) comprises a connecting plate (21) and an anchoring plate (22); One end of the anchoring plate (22) is fixedly installed on the prefabricated concrete wallboard (1), one end of the connecting plate (21) is fixedly connected with the other end of the anchoring plate (22), the other end of the connecting plate (21) is capable of being connected with the end plate (31), and the connecting plate (21) is horizontally arranged and perpendicular to the anchoring plate (22).

4. The pair of pull structures for the composite shear wall according to claim 3, wherein A plurality of anchoring steel bars (5) are uniformly arranged along the anchoring plate (22), the plurality of anchoring steel bars (5) are transversely embedded in the prefabricated concrete wallboard (1), one end of the anchoring steel bar (5) is fixedly connected with the anchoring plate (22), and the anchoring steel bar (5) is perpendicular to the end plate (31) and greater than or equal to 4 in number.

5. The pair of pull structures for the composite shear wall according to claim 3, wherein A nut (34) is further arranged on the outer surface of the sleeve (32), the bottom surface of the nut (34) is fixedly connected with the sleeve (32), and the nut (34) is parallel to the end plate (31).

6. The pair of pull structures for the composite shear wall according to claim 5, wherein The operating assembly (4) comprises an operating rod (41) and a rope (42); The rope (42) is wound around the sleeve (32) and capable of rotating the sleeve (32), the sleeve (32) drives the two screw rods (33) at both ends to rotate into the sleeve (32) to tighten the two fixed plate assemblies (2). The bottom of the operating rod (41) is threaded and connected with the nut (34), the telescopic connecting assembly (3) can be placed on the fixed plate assembly (2) by using the operating rod (41), the operating rod (41) can also drive the sleeve (32) to rotate, thereby driving the threaded rods (33) at both ends of the sleeve (32) to rotate to a certain extent. 7.The counter-pulling structure for laminated shear walls according to claim 3, wherein, The connecting plate (21) is fixedly provided with a fixing member (23) at the connecting position with the end plate (31), the end plate (31) is provided with a through hole, the size of the through hole is greater than that of the fixing member (23), and the end plate (31) can be nested with the fixing member (23) to form a connection. 8.The counter-pulling structure for laminated shear walls according to claim 7, wherein, The fixing member (23) is provided with two elastic metal sheets (35) on both sides in parallel with the direction of the anchoring plate (22), the elastic metal sheet (35) is configured to be a metal sheet with a certain bending angle and capable of springing back after deformation, one end of the elastic metal sheet (35) is fixedly connected with the fixing member (23), the other end of the elastic metal sheet (35) can be pressed down when the end plate (31) is nested with the fixing member (23), and the other end of the elastic metal sheet (35) is reset after the nesting of the end plate (31) is completed, thereby preventing the end plate (31) from being separated.

9. A wall comprising, The counter-pulling structure for laminated shear walls according to any one of claims 1-8; The wall further comprises an outer formwork fixedly connected between two sides of two spaced-apart prefabricated concrete wall panels (1), the outer formwork and the prefabricated concrete wall panels (1) form a wall pouring space, and the two spaced-apart prefabricated concrete wall panels (1) are connected into one body by pouring concrete into the pouring space. 10.The wall according to claim 9, wherein, The arrangement mode of the counter-pulling structure on the prefabricated concrete wall panel (1) is that the horizontal distance is within the range of 350-450 mm, the distance from the bottom surface is within the range of 800-900 mm in the vertical direction, the distance from the top surface is within the range of 1200-1400 mm, and the vertical distance between the counter-pulling structures is within the range of 800-1000 mm.

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