A self-centering prefabricated shear wall

Abstract

This invention provides a self-aligning prefabricated shear wall, belonging to the field of shear wall construction technology. To solve the problems of difficult alignment, low efficiency, and safety hazards during the installation of existing prefabricated shear walls, this device includes a shear wall body with a guide protrusion and a compartment plate fixed to its upper surface, and a guide groove and compartment slot that cooperate with the guide protrusion and compartment plate on its lower surface. During installation, the guide groove of the upper wall slides into the guide protrusion of the lower wall to achieve automatic alignment. The height of the compartment plate is greater than the depth of the compartment slot, automatically forming a horizontal joint for grouting between the upper and lower walls, and dividing the joint into multiple independent grouting chambers through the compartment plate. This invention effectively improves the work efficiency during shear wall assembly, reduces the risk of accidents, and ensures construction quality through its guide and compartment structures.

Description

Technical Field

[0001] This utility model relates to the field of shear wall construction technology, specifically to a self-centering prefabricated shear wall. Background Technology

[0002] Currently, the industry commonly uses sleeve grouting connection technology to connect the vertical reinforcement of upper and lower shear walls. The vertical reinforcement of the lower shear wall is inserted into the grouting sleeves embedded in the upper shear wall, and then a reliable connection is formed by injecting high-strength grout. However, in actual construction, the above connection method has obvious defects. Specifically, when the upper precast shear wall is hoisted to the installation position by a tower crane, construction workers need to manually stabilize the wall, which weighs several tons, at high altitude and precisely align the holes of the multiple grouting sleeves embedded at its bottom with the multiple reserved reinforcements extending from the lower wall. Due to the wall's weight and unstable suspended state, the alignment process is difficult. Usually, construction workers need to descend to a position about one meter away from the docking surface to begin manual intervention. This requires multiple people to work together to push, pull, and pry, and a mirror needs to be placed at the bottom of the wall to observe the alignment of the reserved longitudinal reinforcements with the grouting sleeves.

[0003] This traditional installation method has the following technical drawbacks:

[0004] 1. The entire alignment process relies entirely on manual labor, which is time-consuming and labor-intensive, severely restricting the overall construction progress and requiring the deployment of many skilled workers, thus increasing labor costs.

[0005] 2. When workers perform manual operations under suspended heavy objects, collisions are likely to occur, posing a significant safety hazard.

[0006] 3. Manual alignment is susceptible to various factors such as wind force, line of sight, and worker experience, making it difficult to ensure that all steel bars can be accurately and without collision inserted into the center of the sleeve. This may lead to steel bar misalignment, affecting the grouting quality and the final connection strength, thus posing a potential threat to structural safety.

[0007] 4. The need to use various auxiliary tools such as mirrors and crowbars increases the complexity of on-site management.

[0008] While some existing technologies have attempted to use temporary, detachable external guide frames to assist in positioning, these solutions add extra components and installation / disassembly procedures, increasing costs and material management burdens. Therefore, developing a prefabricated shear wall structure that can achieve automatic and rapid alignment has become an urgent technical problem to be solved in this field. Utility Model Content

[0009] In view of the technical problems existing in the background technology, such as the reliance on manual straightening during the installation and docking of prefabricated shear walls, the difficulty in alignment, low installation efficiency, and difficulty in ensuring accuracy, this utility model aims to provide a self-aligning prefabricated shear wall. By setting an integrated guide structure and a compartment structure, reliable alignment of the shear wall can be achieved during the hoisting process, and rapid grouting of the joints can be achieved after hoisting.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] A self-centering prefabricated shear wall includes a shear wall body, wherein the upper end of the shear wall body is provided with reserved reinforcing bars, and the lower part is provided with a grouting sleeve and grouting holes and grouting outlet holes for communicating with the interior of the grouting sleeve. The feature is that it further includes:

[0012] The compartment plates are arranged in multiple sets at intervals along the length of the shear wall body. Each set of compartment plates is fixedly connected to the upper end of the shear wall body. The length of the compartment plates is distributed along the thickness of the shear wall body, and the height is distributed along the vertical direction.

[0013] The guide protrusion is fixedly connected to the top of the shear wall body, and its height is distributed along the vertical direction;

[0014] The guide groove is located on the lower end face of the shear wall body, and its height is distributed along the vertical direction. It is used to slide up and down in cooperation with the guide protrusion.

[0015] The compartment groove is located on the lower end face of the shear wall body, and the shape of the compartment groove matches that of the compartment plate.

[0016] Furthermore, the height of the compartment plate is greater than the height of the compartment groove, so that when two adjacent shear wall bodies are connected vertically, a joint is formed for injecting the grouting layer.

[0017] Furthermore, the upper surfaces of the guide protrusion and guide groove are flush with the upper surfaces of the compartment plate and the compartment groove, respectively.

[0018] Furthermore, the guide protrusion and the guide groove are fitted with a clearance.

[0019] Furthermore, the guide protrusion is fixedly connected to one side of the compartment plate, and the guide groove is connected to the compartment groove.

[0020] Furthermore, the cross-section of the guide protrusion and the guide groove is any one of rectangular, V-shaped, or U-shaped.

[0021] Furthermore, the lower end face of the grouting sleeve is provided with a funnel-shaped or conical guide surface.

[0022] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0023] 1. The upper and lower shear walls are coarsely positioned and guided by guide protrusions and guide grooves, realizing automatic coarse positioning and guidance of the upper and lower shear walls during the hoisting process. This greatly reduces the difficulty of the operation and transforms the original "precise alignment" that required multiple people to cooperate into a simple "guided positioning". The operator only needs to provide slight support to control the wall to descend smoothly, avoiding large displacement of the wall. The operation process is easier and less strenuous, reducing the risk of the operator operating under suspended heavy objects.

[0024] 2. The height of the compartment plate is greater than that of the compartment groove. When the upper shear wall is in place, the upper surface of the compartment plate automatically becomes the support surface of the lower layer, thus forming a uniform and standardized joint between the upper and lower shear walls. This eliminates the tedious process of manually laying shims and leveling in the traditional construction process, which not only simplifies the construction process, but also ensures the consistency of the specifications of each joint, providing a guarantee for the quality of subsequent grouting.

[0025] 3. By setting up compartment plates, the original continuous and narrow horizontal joint space between the upper and lower shear walls is divided into several independent grouting chambers. This compartment design effectively solves the problems of uneven grout flow and internal voids that may occur when grouting long shear wall joints at one time, ensuring the density of the grout. At the same time, it eliminates the need for operators to arrange compartments on the upper surface of the upper shear wall in advance, which can further improve work efficiency.

[0026] 4. The compartment plate is not only used to separate joints, but also serves as the base for the guide protrusions. The integrated structural design allows the guide protrusions, guide grooves and other structures to be formed in one go through mold adjustment during the concrete precasting stage, avoiding the need to add independent steel guide components and the required welding or bolting connection processes, thereby simplifying the production process and reducing manufacturing costs. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a top view of the structure of this utility model;

[0030] Figure 3 This is a bottom view of the structure of this utility model;

[0031] Figure 4This is a schematic diagram of the structure of the present invention in its installed state;

[0032] Figure 5 for Figure 4 A magnified view of the structure at point A in the middle;

[0033] in:

[0034] 1-Shear wall body, 2-Section plate, 3-Guide protrusion, 4-Guide groove, 5-Section groove, 6-Longitudinal reinforcement, 7-Transverse reinforcement, 8-Installation hole of inclined support seat, 9-Grouting hole, 10-Grouting outlet hole, 11-Grouting sleeve, 12-Joint grouting layer. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0036] It should be noted that in the following embodiments, ... Figure 1 The directions shown are for illustrative purposes only, namely, the height direction of the shear wall body 1 is the up-down direction, the length direction is the left-right direction, and the thickness direction is the front-back direction.

[0037] like Figures 1-5 As shown, this utility model provides a self-centering assembled shear wall, including a shear wall body 1. The upper end face of the shear wall body 1 is provided with multiple compartment plates 2 evenly spaced along the left and right directions. A guide protrusion 3 is fixedly connected to one side of the compartment plate 2. The lower end face of the shear wall body 1 is provided with multiple guide grooves 4 that match the number, position, and shape of the guide protrusions 3, and multiple compartment grooves 5 that match the number, position, and shape of the compartment plates 2. When two adjacent shear wall bodies 1 are installed, they are roughly positioned by the guide protrusions 3 and guide grooves 4, and multiple compartment sections are formed by the gap between the multiple compartment plates 2 and the lower end face of the upper shear wall.

[0038] Specifically, the longitudinal reinforcing bars 6 of the shear wall body 1 extend a certain height from the upper end face, and the transverse reinforcing bars 7 extend a certain length from the left and right sides. The upper middle part is provided with inclined support mounting holes 8 for connecting with the inclined support, so as to facilitate the support of the shear wall through the inclined support. The lower part of the shear wall body 1 is also provided with a grouting sleeve 11, and the front side is provided with grouting holes 9 and grout outlet holes 10 that communicate with the inside of the grouting sleeve.

[0039] The length of the compartment plate 2 is distributed along the front-to-back direction and is flush with the front and rear sides of the shear wall body 1. The guide protrusion 3 is fixed to one side of the compartment plate 2, and its upper end face is flush with or higher than the upper end face of the compartment plate 2. The guide groove 4 is set on the lower end face of the shear wall body 1, and its position corresponds to the guide protrusion 3 and its shape and size match. In this embodiment, the cross-section of the guide protrusion 3 and the guide groove 4 is rectangular, but V-shaped, U-shaped, etc. can also be used. The guide protrusion 3 and the guide groove 4 are slidably connected up and down along the height direction. When the upper and lower shear wall bodies 1 are connected, coarse positioning and guidance can be performed by the cooperation of the guide protrusion 3 and the guide groove 4. The guide protrusion 3 and the guide groove 4 are fitted with a gap to facilitate fine adjustment of the position when the longitudinal reinforcement 6 is fitted with the grouting sleeve 11. The lower end face of the shear wall body 1 is also provided with a compartment groove 5 distributed corresponding to the position of the compartment plate 2. The compartment groove 5 matches the shape and size of the compartment plate 2 and is connected to the corresponding guide groove 4.

[0040] It should be noted that the height of the compartment plate 2 is greater than that of the compartment groove 5. When the upper and lower shear wall bodies 1 are connected, the compartment plate 2 can limit the upper shear wall body 1, so that the two shear wall bodies 1 form a joint of a preset height in the height direction, which facilitates the subsequent formation of a joint such as... Figure 4 and Figure 5 The joint grouting layer 12 shown does not require prior shims or leveling operations; furthermore, in this embodiment, the interval between two adjacent compartment plates 2 is set to 1 to 2 m. Through multiple compartment plates 2 distributed left and right, the joint grouting layer 12 can be divided into multiple grouting chambers, avoiding the problem of incomplete grouting in the joint space due to the excessive length of the shear wall body 1.

[0041] In addition, in this embodiment, the lower inner side of the grouting sleeve 11 is shaped like a trumpet or a cone to form a guide surface, which facilitates the longitudinal steel bar 6 extending above the shear wall body 1 to enter the grouting sleeve 11.

[0042] The construction process for this device is as follows:

[0043] Step 1: Vertically straighten the longitudinal steel bar 6 extending above the upper end face of the lower shear wall, and clean the upper end face to ensure that there are no concrete debris or other debris.

[0044] Step 2: Lifting and rough positioning. Use tower cranes or other lifting equipment to lift the upper shear wall and move it directly above the lower shear wall. Precise positioning is not required in this step; the operator only needs to roughly align the wall panel.

[0045] Step 3: Lowering and centering. Slowly lower the upper shear wall. When the wall panel reaches a certain height, the operator stabilizes the upper shear wall so that the guide groove 4 on the lower end face of the upper shear wall corresponds to the guide protrusion 3 on the lower shear wall. The guide protrusion 3 and the guide groove 4 are used to roughly position and guide the upper and lower shear walls.

[0046] Step 4: The longitudinal steel bar 6 is connected to the grouting sleeve 11, and the upper shear wall continues to move downward. At this time, due to the limiting of the guide protrusion 3 and the guide groove 4, the upper shear wall can self-align within a certain range during the descent. Therefore, only two operators are needed to support it, and the operation is labor-saving. When the longitudinal steel bar 6 at the upper end of the lower shear wall approaches the grouting sleeve 11, the operator can slightly adjust the position of the upper shear wall so that the longitudinal steel bar 6 corresponds to the position of the grouting sleeve 11, and continue to move the upper shear wall downward. During this process, the longitudinal steel bar 6 is guided into the grouting sleeve 11 through the funnel-shaped or conical guide surface at the opening of the grouting sleeve 11.

[0047] Step 5: Positioning and Joint Sealing. Continue lowering the upper shear wall until it can no longer descend. At this point, the upper end of the compartment plate 2 above the lower shear wall abuts against the upper surface of the compartment groove 5, forming a joint between the upper and lower shear walls. The compartment plate 2 divides the joint into multiple segments, such as... Figure 4 As shown, the longitudinal steel bar 6 has been fully inserted into the grouting sleeve 11, and a uniform annular gap has been formed between it and the inner wall of the sleeve. Then, the appropriate inclined support mounting hole 8 is selected to install the inclined support to support the upper shear wall, and the verticality is corrected and the hook is removed.

[0048] Step 6: Grouting operation. First, grout the horizontal joints of each section separated by the compartment plate 2. After the grouting material reaches a certain strength (e.g., after 6 hours), inject the grouting material into the grouting sleeve 1 through the grouting hole 9 until the grouting material flows out from the grout outlet hole 10, indicating that the grouting is completed. Finally, seal the grouting hole 9 and the grout outlet hole 10.

[0049] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A self-aligning prefabricated shear wall, comprising a shear wall body, wherein longitudinal reinforcing bars of a certain length extend from the upper end of the shear wall body, and a grouting sleeve is provided at the lower part, along with grouting holes and grout outlet holes for communicating with the interior of the grouting sleeve, characterized in that, Also includes: The compartment plates are arranged in multiple sets at intervals along the length of the shear wall body. Each set of compartment plates is fixedly connected to the upper end of the shear wall body. The length of the compartment plates is distributed along the thickness of the shear wall body, and the height is distributed along the vertical direction. The guide protrusion is fixedly connected to the top of the shear wall body, and its height is distributed along the vertical direction; The guide groove is located on the lower end face of the shear wall body, and its height is distributed along the vertical direction. It is used to slide up and down in cooperation with the guide protrusion. The compartment groove is located on the lower end face of the shear wall body, and the shape of the compartment groove matches that of the compartment plate. Furthermore, the height of the compartment plate is greater than the height of the compartment groove, so that when two adjacent shear wall bodies are connected vertically, a joint is formed for injecting the grouting layer.

2. The self-anchoring prefabricated shear wall according to claim 1, wherein, The upper surfaces of the guide protrusion and guide groove are flush with the upper surfaces of the compartment plate and compartment groove, respectively.

3. The self-aligning fabricated shear wall of claim 1 or 2, wherein, The guide protrusion and the guide groove are fitted with a clearance.

4. The self-leveling fabricated shear wall of claim 1, wherein, The guide protrusion is fixedly connected to one side of the compartment plate, and the guide groove is connected to the compartment groove.

5. The self-anchoring prefabricated shear wall according to claim 1, wherein, The cross-sections of the guide protrusions and guide grooves are any one of rectangular, V-shaped, or U-shaped.

6. The self-aligning fabricated shear wall of either claim 1 or 5, wherein, The lower end face of the grouting sleeve is provided with a funnel-shaped or conical guide surface.

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