Prefabricated shear wall and prefabricated shear wall connecting structure

Abstract

The application provides a prefabricated shear wall and a prefabricated shear wall connecting structure, and relates to the technical field of building engineering. The prefabricated shear wall comprises a wall body, the wall body has a connecting groove penetratingly arranged along the height direction of the wall body on one side, the two sides of the connecting groove are long connecting side walls and short connecting side walls, the length of the long connecting side wall is greater than that of the short connecting side wall in the length direction of the wall body, and the wall body further comprises a plurality of supporting assemblies arranged in the connecting groove in the height direction. The node connecting assembly comprises a plurality of annular lap joints, one end of the annular lap joint can be inserted into the connecting groove and lap-jointed with the supporting assembly, and the other end of the annular lap joint is arranged outside the connecting groove. The technical scheme can realize the prefabricated shear wall without auxiliary formwork in diversified splicing, and can solve the problems of low construction efficiency and high cost.

Description

Technical Field

[0001] This application relates to the field of building engineering technology, and in particular to a precast shear wall and a precast shear wall connection structure. Background Technology

[0002] Prefabricated shear walls are the most widely used and fastest-growing prefabricated concrete structure technology in my country in recent years.

[0003] Precast shear wall components include two types: one is the precast monolithic shear wall, where connecting steel bars need to extend from the precast components, and formwork is required at horizontal joints. This approach not only leads to low construction efficiency but also significantly increases costs. The other type is the double-sided composite shear wall, where precast components do not require exposed reinforcement. However, to achieve overlapping in multiple directions, connecting components are still needed, and the internal cavity pouring volume is large, resulting in more wet work.

[0004] Therefore, a precast shear wall is needed to at least solve the above problems. Utility Model Content

[0005] The purpose of this application is to provide a precast shear wall to solve the problem that existing precast shear walls require auxiliary formwork, connecting components, or connecting steel bars during assembly and connection, resulting in low construction efficiency and high costs.

[0006] To address the aforementioned technical problems, this application provides the following technical solutions:

[0007] The first aspect of this application provides a precast shear wall, comprising: a wall body, wherein one side of the wall body has a connecting groove extending through it along its height direction, and the two sides of the connecting groove are a long connecting sidewall and a short connecting sidewall, wherein the length dimension of the long connecting sidewall is greater than the length dimension of the short connecting sidewall along the length direction of the wall body, and the wall body further comprises a plurality of supporting components disposed in the connecting groove along the height direction; and a node connecting component, comprising a plurality of annular lap bars, one end of the annular lap bar being able to extend into the connecting groove and overlap with the supporting component, and the other end of the annular lap bar extending out of the connecting groove.

[0008] In some embodiments of this application, the wall is composed of a support frame and concrete medium. The support frame includes a plurality of first transverse distribution bars arranged along the height direction. The first transverse distribution bars are arranged along the length direction, and one end of the first transverse distribution bars extends into the long connecting sidewall.

[0009] In some embodiments of this application, the support frame further includes a plurality of second transverse distribution ribs arranged along the height direction. The second transverse distribution ribs are U-shaped bends and extend through the width direction of the connecting groove, respectively connecting the long connecting sidewall and the short connecting sidewall. The portion of the second transverse distribution rib located on the long connecting sidewall overlaps with the first transverse distribution rib, and the portion of the second transverse distribution rib located within the connecting groove forms a portion of the support assembly.

[0010] In some embodiments of this application, the supporting component further includes a plurality of support bars, which are disposed in the connecting groove and connected to the long connecting sidewall and the short connecting sidewall respectively. The support bars are tied to the second transverse distribution bars by steel wire. The portions of the support bars and the second transverse distribution bars located in the connecting groove are parallel and opposite to each other. One end of the annular lap bar can be inserted into the gap area formed between the support bars and the second transverse distribution bars and overlap with the support bars and the second transverse distribution bars.

[0011] In some embodiments of this application, the support bar and the second transverse distribution bar do not exceed the range of the short connection sidewall; the node connection assembly further includes a vertical control bar, which is located in the connection groove and connected to the annular lap bar. The vertical control bar cooperates with the support assembly to enable the annular lap bar to switch between a horizontal state and an inclined state.

[0012] In some embodiments of this application, the projections of the support bar and the second transverse distribution bar on the horizontal and vertical planes are not collinear; the support bar is located below the second transverse distribution bar along the height direction, and in the depth direction of the connecting groove, the portion of the support bar relative to the second transverse distribution bar located within the connecting groove is positioned close to the bottom surface of the connecting groove.

[0013] In some embodiments of this application, the support frame further includes a plurality of vertical distribution ribs, which are arranged along the height direction and are connected to the first transverse distribution rib and / or the second transverse distribution rib; wherein a pair of the vertical distribution ribs located in one of the long connecting sidewalls and the short connecting sidewalls are disposed between the support rib and the second transverse distribution rib.

[0014] The second aspect of this application provides a precast shear wall connection structure, including the precast shear wall provided in the first aspect of this application, wherein there are at least two precast shear walls, the two precast shear walls are arranged vertically to form an L-shaped structure, the connection grooves in the two precast shear walls are connected, and the plurality of annular lap bars overlap each other.

[0015] In some embodiments of this application, there is a reserved gap between the sidewalls of the two precast shear walls, and the reserved gap is filled with a functional core layer.

[0016] In some embodiments of this application, the precast shear wall connection structure further includes: a plurality of vertical connecting bars, wherein the plurality of vertical connecting bars are inserted into the annular space formed by the overlapping of the plurality of annular lapped bars.

[0017] Compared to existing technologies, the precast shear wall provided in the first aspect of this application allows for the combination and splicing of two or three such precast shear walls through the different lengths of the two side walls of the connecting groove, thereby forming precast shear wall groups with different structures. This allows the connecting groove to form a closed structure on its periphery, and the annular lapped bars within the connecting groove can overlap each other. Concrete is then poured into the connecting groove to achieve the joint connection. This reduces the steps of formwork erection and dismantling, significantly saving construction time, improving construction efficiency, and simultaneously reducing material and labor costs.

[0018] The precast shear wall connection structure provided in the second aspect of this application has similar technical effects to the precast shear wall provided in the first aspect of this application. Attached Figure Description

[0019] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein:

[0020] Figure 1 A schematic diagram of the prefabricated shear wall of Embodiment 1 of this application is shown.

[0021] Figure 2 The schematic diagram illustrates the structure of the wall in the precast shear wall of Embodiment 1 of this application;

[0022] Figure 3 for Figure 2 Top view;

[0023] Figure 4 The diagram schematically illustrates a structural schematic of one embodiment of the prefabricated shear wall connection structure of Embodiment 2 of this application;

[0024] Figure 5 for Figure 4 Top view;

[0025] Figure 6 A top view schematically illustrates another embodiment of the prefabricated shear wall connection structure of Embodiment 2 of this application.

[0026] Explanation of icon numbers:

[0027] 1. Wall; 101. Connecting groove; 102. Long connecting sidewall; 103. Short connecting sidewall; 104. First transverse distribution bar; 105. Second transverse distribution bar; 106. Support bar; 107. Vertical distribution bar; 2. Node connection assembly; 201. Circular lap bar; 202. Vertical control bar; 3. Vertical connecting bar. Detailed Implementation

[0028] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0029] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0030] Example 1

[0031] This application provides a precast shear wall, such as Figures 1 to 3 As shown, it includes: a wall 1, with a connecting groove 101 extending through it along its height on one side, and a long connecting sidewall 102 and a short connecting sidewall 103 on both sides of the connecting groove 101. Along the length of the wall 1, the length of the long connecting sidewall 102 is greater than the length of the short connecting sidewall 103. The wall 1 also includes a plurality of supporting components disposed in the connecting groove 101 along its height; and a node connecting component 2, including a plurality of annular lap bars 201. One end of the annular lap bar 201 can extend into the connecting groove 101 and overlap with the supporting component, and the other end of the annular lap bar 201 extends out of the connecting groove 101.

[0032] On one side of the precast shear wall 1, a connecting groove 101 extending along its height is provided. The two side walls of the connecting groove 101 have different lengths, with the longer connecting side wall 102 having a larger dimension in the length direction of the wall 1 than the shorter connecting side wall 103. This allows for controlling the length difference between the longer and shorter connecting side walls 102 to be the same, thereby improving standardization and reducing the variety of wall types produced. Utilizing the difference in length between the two side walls of the connecting groove 101, two, three, or even more such precast shear walls can be combined and spliced ​​to form precast shear wall groups with different structures, such as the common L-shape or T-shape. During splicing, the longer and shorter connecting side walls 102 and 103 of each precast shear wall adapt to each other, allowing the connecting groove 101 to form a closed state around its perimeter. In this way, after the splicing is completed, concrete can be directly poured into the connecting groove 101 to connect multiple precast shear walls without the need for formwork or auxiliary connectors, greatly improving construction efficiency and reducing costs.

[0033] Along the height of wall 1, multiple supporting components are installed inside the connecting groove 101, which work in conjunction with the annular lap joints 201. One end of each annular lap joint 201 extends into the connecting groove 101 to lap with the supporting component, while the other end extends out of the connecting groove 101. The portion extending out of the connecting groove 101 can lap with other annular lap joints 201 of the precast shear wall, while the portion extending into the connecting groove 101, due to its movable connection with the supporting component, can flexibly adjust its position, effectively avoiding collisions during lap joints. By lapping multiple annular lap joints 201 of the precast shear wall, and with the annular lap joints 201 lapped with the supporting components, there is no need to lay connecting steel bars on site; concrete can be poured directly into the connecting groove 101, thus achieving a stable connection effect.

[0034] The precast shear wall provided in this application embodiment, with its design of different lengths on both sides of the connecting groove 101, enables diverse splicing methods for precast shear walls. It can be assembled into L-shaped, T-shaped, and other precast shear wall groups according to architectural design requirements, meeting the construction requirements of complex building structures and improving the flexibility of architectural design. After splicing, the connecting groove 101 forms a closed space, and concrete can be directly poured within the connecting groove 101 through overlapping connection nodes. This not only provides a stable connection effect but also eliminates the need for formwork, auxiliary connectors, and other fixing methods. Compared to traditional connection methods, this reduces the steps of formwork construction and removal, significantly saving construction time, improving construction efficiency, and simultaneously reducing material and labor costs.

[0035] In some embodiments, the wall 1 is composed of a support frame and a concrete medium. The support frame includes a plurality of first transverse distribution bars 104 arranged along the height direction. The first transverse distribution bars 104 are arranged along the length direction, and one end of the first transverse distribution bars 104 extends into the long connecting sidewall 102.

[0036] The precast shear wall 1 consists of a support frame and concrete medium. Except for the connecting groove 101, the support frame is wrapped by the concrete medium to form the final wall 1 structure. This not only improves the integrity and compressive strength of the wall 1, but also avoids the problems of large on-site pouring volume and a lot of wet work.

[0037] In the supporting frame, multiple first transverse distribution bars 104 are arranged in an orderly manner along the height direction of the wall 1. These first transverse distribution bars 104 are laid along the length direction of the wall 1, with one end of each first transverse distribution bar 104 extending into the interior of the long connecting sidewall 102. That is, the first transverse distribution bars 104 are laid starting from one side of the wall 1, with one end extending to a position close to the end face of the long connecting sidewall 102. By having multiple first transverse distribution bars 104 extend into the long connecting sidewall 102 of the connecting groove 101, cracking of the concrete in the connecting groove 101 can be prevented, thus improving safety.

[0038] In some embodiments, such as Figure 2 and Figure 3 As shown, the support frame also includes a plurality of second transverse distribution ribs 105 arranged along the height direction. The second transverse distribution ribs 105 are U-shaped bends. The second transverse distribution ribs 105 pass through the width direction of the connecting groove 101 and connect to the long connecting side wall 102 and the short connecting side wall 103 respectively. The portion of the second transverse distribution rib 105 located in the long connecting side wall 102 overlaps with the first transverse distribution rib 104. The portion of the second transverse distribution rib 105 located in the connecting groove 101 forms part of the support assembly.

[0039] In the support frame of the precast shear wall, in addition to the first transverse distribution reinforcement 104 arranged along the height direction, there are also a number of second transverse distribution reinforcement 105 arranged along the height direction, and these second transverse distribution reinforcement 105 are U-shaped bends.

[0040] Along the width of wall 1, the second transverse distribution reinforcement 105 transversely crosses the connecting groove 101, with one end anchored inside the long connecting sidewall 102 and the other end firmly connected to the short connecting sidewall 103. The portion of the second transverse distribution reinforcement 105 located in the long connecting sidewall 102 can overlap with the already arranged first transverse distribution reinforcement 104. The two can be tied together; to ensure connection strength, the overlap length should not be less than 1.2laE. The second transverse distribution reinforcement 105 inside the short connecting sidewall 103 serves to support the short connecting sidewall 103, effectively preventing cracking of the concrete at the connecting groove 101. The second transverse distribution reinforcement 105, spanning the connecting groove 101, connects the long connecting sidewall 102 and the short connecting sidewall 103, intertwining and cooperating with the first transverse distribution reinforcement 104 to construct a denser and more stable support network structure inside wall 1, significantly improving the overall strength and stability of wall 1.

[0041] The portion of the second transverse distribution bar 105 located within the connecting groove 101 becomes part of the support component, providing support points for the subsequently installed annular lap bar 201. This allows the second transverse distribution bar 105 and the annular lap bar 201 to form an annular lap joint, reducing the required lap length and decreasing the lap length of the reinforcing bars. This reduces the need for wet work. The depth of the connecting groove 101 should ensure that the lap distance between the annular lap bar 201 and the second transverse distribution bar 105 is not less than 0.6laE, thereby guaranteeing sufficient strength for the supporting structure.

[0042] In building structural design, laE is the seismic anchorage length, a numerical value representing length. The value of laE is related to factors such as concrete strength grade, type and diameter of reinforcing steel, and seismic grade.

[0043] In some embodiments, the support assembly further includes a plurality of support ribs 106, which are disposed within the connecting groove 101 and connected to the long connecting sidewall 102 and the short connecting sidewall 103 respectively. The support ribs 106 are bound to the second transverse distribution ribs 105 by steel wire. The portions of the support ribs 106 and the second transverse distribution ribs 105 located within the connecting groove 101 are parallel and opposite to each other. One end of the annular lap rib 201 can be inserted into the gap area formed between the support ribs 106 and the second transverse distribution ribs 105, overlapping with the support ribs 106 and the second transverse distribution ribs 105.

[0044] Inside the connecting groove 101, multiple support bars 106 are arranged sequentially along the height direction of the wall 1. The two ends of each support bar 106 are firmly connected to the long connecting side wall 102 and the short connecting side wall 103, respectively, for example, by welding or by binding to the support frame within the wall 1. Each support bar 106 corresponds to a second transverse distribution bar 105, and the two are parallel to each other and in a relative state, thereby creating multiple spaced areas within the connecting groove 101.

[0045] The circumferential lap joint 201 can be a rectangular structure formed by bending a steel bar. The width of the interval area is larger than the diameter of the steel bar, allowing one end of the circumferential lap joint 201 to be smoothly inserted into the interval area formed by the support bar 106 and the second transverse distribution bar 105. The support bar 106 and the second transverse distribution bar 105 provide a reliable support structure for the circumferential lap joint 201. After insertion, the circumferential lap joint 201 is effectively limited in both horizontal and vertical directions. Because the circumferential lap joint 201 is connected to the support bar 106 and the second transverse distribution bar 105 by lapping, the circumferential lap joint 201 can be flexibly adjusted in position, effectively avoiding collisions during interlocking with other circumferential lap joints 201.

[0046] In some embodiments, the support rib 106 and the second transverse distribution rib 105 do not exceed the range of the short connection sidewall 103; the node connection assembly 2 also includes a vertical control rib 202, which is located in the connection groove 101 and connected to the annular lap rib 201. The vertical control rib 202 cooperates with the support assembly to enable the annular lap rib 201 to switch between a horizontal state and an inclined state.

[0047] The support bar 106 and the second transverse distribution bar 105 are both located within the connecting groove 101 and do not extend beyond the area of ​​the short connecting sidewall 103. During the hoisting and transportation of the precast shear wall, they can be concealed within the connecting groove 101, effectively preventing deformation or damage caused by external factors.

[0048] Vertical control ribs 202 are located deep within the connecting groove 101, arranged along the height of the wall 1, and situated inside multiple annular lap ribs 201, connected to the annular lap ribs 201 by binding. The vertical control ribs 202 can move up and down; as they are raised or lowered, the annular lap ribs 201 can be positioned in an inclined or horizontal state accordingly. This prevents the annular lap ribs 201 in multiple directions from obstructing or colliding with each other during hoisting, thus avoiding impact on hoisting efficiency. For example, before hoisting, raising the vertical control ribs 202 tilts the annular lap ribs 201 to prevent them from obstructing or colliding during hoisting. After hoisting, lowering the vertical control ribs 202 brings the annular lap ribs 201 to a horizontal state, thereby creating an lapped relationship at the joints of the annular lap ribs 201 in multiple directions.

[0049] In addition, during the hoisting and transportation process, the vertical control rib 202 is lifted up so that the annular lap joint rib 201 is tilted, which allows the annular lap joint rib 201 to be hidden in the connecting groove 101, further ensuring that it does not deform or suffer damage during transportation.

[0050] In some embodiments, the support rib 106 and the second transverse distribution rib 105 are not collinear in their projections on the horizontal and vertical planes; the support rib 106 is located below the second transverse distribution rib 105 along the height direction, and in the depth direction of the connecting groove 101, the portion of the support rib 106 relative to the second transverse distribution rib 105 located in the connecting groove 101 is located close to the bottom surface of the connecting groove 101.

[0051] The projections of the support bar 106 and the second transverse distribution bar 105 on both the horizontal and vertical planes are not collinear, meaning that the support bar 106 and the second transverse distribution bar 105 are staggered. This allows them to distribute the load borne by the two bars from different directions and angles when bearing the ring-shaped lap joint bar 201.

[0052] Along the height of wall 1, the support bar 106 is positioned below the second transverse distribution bar 105, and along the depth of the connecting groove 101, the support bar 106 is closer to the depth of the connecting groove 101 than the second transverse distribution bar 105. This arrangement ensures that the annular lap joint bar 201 can only tilt downwards, not upwards, when its angle is adjusted. This ensures that at the joints of multiple precast shear walls, the annular lap joint bars 201 from all directions can ultimately achieve a horizontal lap, greatly improving the stability of the joint.

[0053] In some embodiments, the support frame further includes a plurality of vertical distribution ribs 107, which are arranged along the height direction and are connected to a first transverse distribution rib 104 and / or a second transverse distribution rib 105; wherein a pair of vertical distribution ribs 107 located in the long connecting sidewall 102 and the short connecting sidewall 103 are disposed between the support rib 106 and the second transverse distribution rib 105.

[0054] The supporting frame includes multiple vertical distribution ribs 107, which are arranged along the height direction. These ribs can be divided into two columns: one column is arranged sequentially along the direction of the long connecting sidewall 102, and the other column is arranged neatly along the direction of the short connecting sidewall 103. The vertical distribution ribs 107 are connected to the first transverse distribution rib 104 by binding, securely binding them with wire at their intersections to ensure a stable connection. A similar binding method is used to connect them to the second transverse distribution rib 105, ensuring the entire supporting frame forms a stable whole.

[0055] In the regions of the long connecting sidewall 102 and the short connecting sidewall 103, a pair of vertical distribution bars 107 are respectively disposed between the support bar 106 and the second transverse distribution bar 105. The support bar 106 and the second transverse distribution bar 105 can be tied to the vertical distribution bars 107, thereby forming an integral and stable frame structure before pouring concrete, laying a solid foundation for the subsequent concrete pouring process and the final structural performance of the precast shear wall.

[0056] Example 2

[0057] This application provides a prefabricated shear wall connection structure, such as... Figure 4 and Figure 5 As shown, the precast shear wall provided in Embodiment 1 is included. There are at least two precast shear walls, which are arranged vertically to form an L-shaped structure. The connecting grooves 101 in the two precast shear walls are connected, and multiple annular lap bars 201 overlap each other.

[0058] At the construction site, two precast shear walls can be hoisted to a designated location using hoisting equipment. From a top-down view, these two precast shear walls are placed vertically, with their connecting grooves 101 facing each other to achieve interconnection. Specifically, the long connecting sidewall 102 of one precast shear wall is aligned with the long connecting sidewall 102 of the other precast shear wall, and the short connecting sidewalls 103 are also aligned accordingly. After this operation, the two precast shear walls are joined to form an L-shaped structure.

[0059] During the assembly process, the annular lap bar 201 extending from the connection slot 101 of one precast shear wall will overlap with the annular lap bar 201 extending from the connection slot 101 of the other precast shear wall, thus completing the construction of the connection node. Finally, concrete is poured into the connection slot 101 to realize the node connection. By setting two precast shear walls vertically to form an L-shaped structure, diverse architectural design needs can be fully met. This method can flexibly construct complex building floor plans, and is applicable to special areas such as building corners, greatly improving the design flexibility and practicality of architectural space.

[0060] In some embodiments, such as Figure 6 As shown, there are at least three precast shear walls, which are arranged to form a T-shaped structure. The connecting grooves 101 in the three precast shear walls are connected, and multiple annular lap bars 201 overlap each other.

[0061] At the construction site, workers first plan the layout of the T-shaped structure, and then use hoisting equipment to lift two precast shear walls to the designated location. One precast shear wall serves as the vertical member of the T, while the other two serve as the horizontal members. The two horizontal members are perpendicular to the vertical members, and the two horizontal members are arranged perpendicularly to each other to form the T-shaped structure.

[0062] On one side of each precast shear wall, there is a connecting slot 101 running through the wall along its height. During assembly, the construction workers align the connecting slots 101 of the three precast shear walls to make them interconnected. Multiple annular lapped bars 201, made of high-strength steel bars, are arranged within each connecting slot 101. During assembly, the annular lapped bars 201 from different precast shear wall connecting slots 101 interweave and overlap.

[0063] The T-shaped structure, constructed using three prefabricated shear walls, greatly enriches the forms of building structures and can meet the needs of various complex architectural designs. For example, in the corners of public building lobbies or special structural parts of industrial plants, the T-shaped prefabricated shear wall connection structure can flexibly adapt to different spatial layouts and stress requirements, enhancing the freedom and practicality of architectural design.

[0064] The height of the annular lap joint 201 inside each precast shear wall can be set according to the actual working conditions so that the annular lap joint 201 in each direction can eventually be lapped in a horizontal state to avoid interference.

[0065] Multiple precast shear walls are interconnected via connecting slots 101, and the annular lap joints 201 overlap each other, forming a highly efficient and stable connection node. Compared to traditional connection methods, this lap joint reduces the use of additional connectors, lowering construction costs. The standardized design and simple, direct connection method of the precast shear walls make the construction process more convenient. On-site construction workers only need to place the precast shear walls in the required configuration according to the design specifications and then perform the lap joint operation of the annular lap joints 201, eliminating the need for complex on-site processing and high-precision installation techniques. This significantly shortens the construction cycle and improves construction efficiency.

[0066] In some embodiments, there is a reserved gap between the sidewalls of the two precast shear walls, and the reserved gap is filled with a functional core layer.

[0067] When installing two or more precast shear walls, construction workers will leave a gap of a specific width between the side walls, typically 20 millimeters. After leaving this gap, the workers will select a suitable functional core material to fill it. This functional core material can be a material with good sound insulation and heat insulation properties, or a corrosion-resistant and waterproof material, etc.

[0068] Because the surfaces of the connecting sidewalls are not entirely smooth and have some unevenness, filling the gaps between the precast shear wall sidewalls with a functional core layer can effectively fill the tiny gaps and uneven areas between the connecting sidewalls, making the connection between two or more precast shear walls more stable. Furthermore, depending on the characteristics of the functional core layer material, whether it be sound insulation, heat insulation, corrosion protection, or waterproofing, it can correspondingly improve the overall performance of the precast shear wall connection structure, such as enhancing sound insulation, improving heat insulation performance, and increasing structural protection capabilities.

[0069] In some embodiments, the precast shear wall connection structure further includes a plurality of vertical connecting bars 3, which are inserted into the annular space formed by the overlapping of a plurality of annular lapped bars 201.

[0070] After multiple precast shear walls are assembled into the desired structure (such as an L-shape or T-shape), the annular lapped bars 201 within the connection slots 101 of each precast shear wall have been interlocked. Then, the construction workers prepare to install the vertical connecting bars 3. There can be four vertical connecting bars 3. Workers insert each vertical connecting bar 3 one by one into the annular space formed by the interlocking annular lapped bars 201 and tie them to the annular lapped bars 201. After being inserted into the annular space, the vertical connecting bars 3 fit tightly with the annular lapped bars 201. Finally, concrete is poured into the connection slots 101 to achieve the node connection. The multiple vertical connecting bars 3 penetrating the annular space formed by the annular lapped bars 201 act as edge members at the connection nodes of the precast shear wall connection structure.

[0071] At the connection node, the ring-shaped lap joint 201 is mainly responsible for the horizontal force transmission, while the vertical connecting bar 3 compensates for the lack of vertical force transmission and constraint. The two work together to make the mechanical properties of the connection node more balanced in all directions, effectively reducing the possibility of cracks or failures caused by uneven stress at the connection node, extending the service life of the precast shear wall connection structure, and improving the reliability of the building structure.

[0072] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A precast shear wall, characterized in that, include: The wall has a connecting groove extending through it along its height on one side. The two sides of the connecting groove are a long connecting sidewall and a short connecting sidewall. Along the length of the wall, the length of the long connecting sidewall is greater than the length of the short connecting sidewall. The wall also includes a plurality of supporting components disposed in the connecting groove along the height. The node connection assembly includes multiple annular lap joints, one end of which can extend into the connection groove and overlap with the support assembly, and the other end of which extends out of the connection groove.

2. The precast shear wall according to claim 1, characterized in that, The wall is composed of a support frame and concrete medium. The support frame includes a plurality of first transverse distribution bars arranged along the height direction. The first transverse distribution bars are arranged along the length direction, and one end of the first transverse distribution bars extends into the long connecting side wall.

3. The precast shear wall according to claim 2, characterized in that, The support frame also includes a plurality of second transverse distribution ribs arranged along the height direction. The second transverse distribution ribs are U-shaped bends and are connected to the long connecting sidewall and the short connecting sidewall respectively through the width direction of the connecting groove. Wherein, the portion of the second transverse distribution rib located on the long connecting sidewall overlaps with the first transverse distribution rib, and the portion of the second transverse distribution rib located within the connecting groove forms part of the support assembly.

4. The precast shear wall according to claim 3, characterized in that, The supporting component also includes a plurality of support bars, which are disposed in the connecting groove and connected to the long connecting side wall and the short connecting side wall respectively. The support bars are tied to the second transverse distribution bars by steel wire. The portion of the support bar and the second transverse distribution bar located within the connecting groove are parallel and opposite to each other. One end of the annular lap bar can be inserted into the gap area formed between the support bar and the second transverse distribution bar and lap with the support bar and the second transverse distribution bar.

5. The precast shear wall according to claim 4, characterized in that, The supporting reinforcement and the second transverse distribution reinforcement do not exceed the range of the short connecting sidewall; The node connection assembly also includes a vertical control rib, which is located in the connection groove and connected to the annular lap joint rib. The vertical control rib, in cooperation with the support assembly, enables the annular lap joint rib to switch between a horizontal state and an inclined state.

6. The precast shear wall according to claim 4, characterized in that, The projections of the support rib and the second transverse distribution rib on the horizontal and vertical planes are not collinear; The support bar is located below the second transverse distribution bar along the height direction, and in the depth direction of the connecting groove, the portion of the support bar located within the connecting groove relative to the second transverse distribution bar is positioned close to the bottom surface of the connecting groove.

7. The precast shear wall according to claim 6, characterized in that, The support frame further includes a plurality of vertical distribution ribs, which are arranged along the height direction and are connected to the first transverse distribution rib and / or the second transverse distribution rib. The pair of vertical distribution ribs located in the long connecting sidewall and the short connecting sidewall are disposed between the support rib and the second transverse distribution rib.

8. A precast shear wall connection structure, characterized in that, Including the precast shear wall as described in any one of claims 1-7, There are at least two precast shear walls, which are arranged vertically to form an L-shaped structure. The connecting grooves in the two precast shear walls are connected, and the multiple annular lap bars overlap each other.

9. The precast shear wall connection structure according to claim 8, characterized in that, There is a reserved gap between the sidewalls of the two precast shear walls, and the reserved gap is filled with a functional core layer.

10. The precast shear wall connection structure according to claim 8, characterized in that, Also includes: Multiple vertical connecting bars are inserted into the annular space formed by the overlapping of multiple annular lap joint bars.

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