Modular building wall panel and wall body with multiple sets of counter-pulling structure

Abstract

This utility model relates to a modular building wall panel with multiple sets of tie structures, including two spaced-apart first and second precast wall panels. Each tie structure includes an H-shaped connector and a T-shaped cavity. One T-shaped end of the H-shaped connector is embedded in the first precast wall panel, and the T-shaped cavity is located on the second precast wall panel. The other T-shaped end of the H-shaped connector is inserted into the T-shaped cavity, which is filled with mortar to fix the inserted T-shaped end. The beneficial effects are that by using the combination of the H-shaped connector and the T-shaped cavity, the original connection gaps can be eliminated, the wall thickness can be accurately controlled, and the tie force between the first and second precast wall panels is enhanced. During concrete pouring, the H-shaped connector can resist the horizontal pressure brought by the pouring, and the overall integrity of the wall is enhanced, resulting in a more rational structure. After the wall is formed, the H-shaped connector and the poured concrete share the load, enhancing the shear stiffness of the wall.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building construction technology, and in particular to a modular building wall panel and wall with multiple sets of tie structures. Background Technology

[0002] Prefabricated buildings, due to their short construction cycle and minimal environmental impact, have become an important direction for achieving green building and industrialization. Modular buildings, with their highest assembly rate and degree of industrialization, are a key direction for the transformation of the construction industry. They divide the building into several concrete modules, with all equipment, pipelines, decorations, and fixed furniture pre-assembled within each module, and the exterior facade can also be completed. These concrete modules are transported to the construction site and assembled like building blocks. The development of composite shear walls is crucial for the development of modular buildings. In modular buildings, due to the modular division, the internal walls are split and belong to two different modules. To save materials, the walls belonging to the two concrete modules typically form a cavity in the center, and the two prefabricated walls are combined into a composite shear wall by casting concrete. Because pouring concrete into the cavity creates horizontal pressure, tie bolts must be installed during pouring, just like in traditional wall construction methods.

[0003] In the prior art, Chinese patent CN117127714A proposes an internal tie-bar system with bolted connecting rods, including a precast wall main module, a precast wall sub-module, a cast-in-place concrete wall, multiple snap-fit ​​parts, multiple connectors, and multiple shear-resistant members. Multiple snap-fit ​​parts are provided on both the precast wall sub-module and the precast wall main module. Connectors snap-fit ​​with a pair of snap-fit ​​parts to limit the lateral movement of the precast wall sub-module and the precast wall main module. Multiple connectors are arranged longitudinally. The precast wall sub-module and the precast wall main module form a cavity, within which the cast-in-place concrete wall is placed. The precast wall main module, precast wall sub-module, snap-fit ​​parts, and connectors are all connected to the cast-in-place concrete wall. Multiple shear-resistant members are arranged in an array along the longitudinal and height directions. One end of each shear-resistant member is embedded in the precast wall sub-module, and the other end is connected to the cast-in-place concrete wall. While this method can solve the problem of not damaging the existing precast wall's interior finish, the following issues remain: 1. Installation gaps exist, requiring the provision of space for tie rod installation. These gaps will cause the composite shear wall to be poured thicker than designed during concrete casting; 2. The structure is not optimal, with weak shear stiffness in the tie rods. Additional shear connectors are needed to enhance the shear strength and stiffness between the precast and cast-in-place walls, ensuring coordinated load-bearing between the precast and cast-in-place sections. However, adding shear connectors increases the chance of steel reinforcement collisions, making installation more difficult.

[0004] Therefore, there is an urgent need for a modular building wall panel and wall with multiple sets of tie structures that can eliminate the installation gaps in existing composite shear walls and has a reasonable structure. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a modular building wall panel and wall with multiple sets of tie structures, which solves the technical problems of existing composite shear walls having installation gaps and unreasonable structures.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] In a first aspect, this utility model provides a modular building wall panel with multiple sets of tie structures, and further includes two prefabricated wall panels and a second prefabricated wall panel arranged at intervals. Each set of tie structures includes an H-shaped connector and a T-shaped cavity. One T-shaped end of the H-shaped connector is embedded in the first prefabricated wall panel, the T-shaped cavity is located on the second prefabricated wall panel, and the other T-shaped end of the H-shaped connector is inserted into the T-shaped cavity. The T-shaped cavity is filled with mortar to fix the T-shaped end inserted therein.

[0010] Optionally, the T-shaped cavity is a T-shaped strip cavity arranged along the longitudinal length of the second precast wall panel; two opposing stops are formed on the side of the T-shaped cavity near the first precast wall panel to prevent the T-shaped end of the H-shaped connector from coming off; each of the two stops has an elastic strip fixed to its opposite end face to fill the gap between the stop and the T-shaped end of the H-shaped connector.

[0011] Optionally, the first precast wall panel also has a steel reinforcement cage, which includes stirrups, multiple vertical bars and multiple horizontal bars. The multiple vertical bars are located inside the first precast wall panel and between the first precast wall panel and the second precast wall panel, respectively. The horizontal bars are fixedly connected to the vertical bars inside the first precast wall panel, and the stirrups connect the multiple vertical bars in a rectangular shape.

[0012] Optionally, the sides of the multiple vertical bars and the H-shaped connectors located at the four corners of the stirrups are perpendicular to the first precast wall panel.

[0013] Optionally, the stirrups and H-shaped connectors are arranged parallel to each other and alternately in the transverse direction, with a certain interval between the stirrups, H-shaped connectors, and the second precast wall panel.

[0014] Optionally, the H-shaped connector is made of steel.

[0015] Secondly, this utility model embodiment provides a wall, including modular building wall panels, and also includes outer templates fixedly connected to both sides of each layer of first precast wall panels and second precast wall panels; the outer templates on both sides together with the first precast wall panels and second precast wall panels form a casting space, the upper and lower casting spaces are aligned and connected, and the first precast wall panels and second precast wall panels are connected as one unit by pouring concrete into the casting space.

[0016] Optionally, the H-shaped connector is also provided with several through holes to allow concrete to pass through.

[0017] Optionally, multiple longitudinally arranged lapped steel bars are provided between the upper and lower walls. The lapped steel bars are located in the casting space. The multiple lapped steel bars are respectively close to the space between the two first precast wall panels and the space between the two second precast wall panels, and are fixedly connected to the H-shaped connectors in the upper and lower wall panels.

[0018] Optionally, the first precast wall panel and the second precast wall panel are opposite sides of two concrete modules, and multiple concrete modules are connected by opposite sides in the horizontal and vertical directions to form a modular building.

[0019] (III) Beneficial Effects

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

[0021] This utility model provides a modular building wall panel with multiple sets of tie structures, including two spaced-apart first and second precast wall panels. Each tie structure includes an H-shaped connector and a T-shaped cavity. One T-shaped end of the H-shaped connector is embedded in the first precast wall panel, the T-shaped cavity is located on the second precast wall panel, and the other T-shaped end of the H-shaped connector is inserted into the T-shaped cavity. The T-shaped cavity is filled with mortar to fix the inserted T-shaped end. Compared with the prior art, by using the combination of the H-shaped connector and the T-shaped cavity, the original connection gap can be eliminated, the thickness of the wall can be accurately controlled, and the tie force between the first and second precast wall panels can be enhanced.

[0022] This utility model also provides a wall structure, including modular building wall panels and outer templates fixedly connected to both sides of the first and second precast wall panels on each layer. The outer templates, together with the first and second precast wall panels, form a pouring space. The upper and lower pouring spaces are aligned and connected. The first and second precast wall panels are connected as a whole by pouring concrete into the pouring space. Compared to existing technologies, during concrete pouring, the H-shaped connectors can resist the horizontal pressure brought by the pouring and enhance the overall integrity of the wall, resulting in a more rational structure. After the wall is formed, the H-shaped connectors and the poured concrete share the load, enhancing the shear stiffness of the wall. Attached Figure Description

[0023] Figure 1 This is a top view of Embodiment 1 of the modular building wall panel with multiple sets of tie structures of this utility model;

[0024] Figure 2 for Figure 1 The side view of the first precast wall panel in a modular building wall panel with multiple sets of tie structures is shown, wherein the concrete in the first precast wall panel is in perspective.

[0025] Figure 3 This is a top view of Embodiment 2 of the wall structure of this utility model, wherein the concrete above the stirrups is not shown in order to clearly show the structure;

[0026] Figure 4 for Figure 3 A partial schematic diagram of the connection between the upper and lower wall panels is shown.

[0027] [Explanation of Labels in the Attached Image]

[0028] 1: First precast wall panel; 11: H-shaped connector; 12: Reinforcing cage; 121: Stirrup; 122: Vertical reinforcement;

[0029] 2: Second precast wall panel; 21: T-shaped cavity; 211: Stop section;

[0030] 3: Elastic strip;

[0031] 4: Lap reinforcement bars. Detailed Implementation

[0032] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1:

[0034] Reference Figure 1 and Figure 2 This embodiment provides a modular building wall panel with multiple sets of tie structures for the construction of wall panels in modular buildings. Specifically, the modular building wall panel with multiple sets of tie structures in this embodiment also includes two prefabricated wall panels 1 and 2 spaced apart. Each set of tie structures includes an H-shaped connector 11 and a T-shaped cavity 21, as detailed below.

[0035] In this embodiment, one T-shaped end of the H-shaped connector 11 is embedded in the first precast wall panel 1, and the T-shaped cavity 21 is provided on the second precast wall panel 2. The other T-shaped end of the H-shaped connector 11 is inserted into the T-shaped cavity 21, and the T-shaped cavity 21 is filled with mortar to fix the inserted T-shaped end. The H-shaped connector 11 has two T-shaped ends, one of which is embedded in the first precast wall panel 1, and the other T-shaped end is inserted into the T-shaped cavity 21 on the second precast wall panel 2. There is a gap between the T-shaped cavity 21 and the T-shaped end. Therefore, after adjusting the H-shaped connector 11 to a suitable position, mortar is poured to fill the gap in the T-shaped cavity 21 and fix the T-shaped end. As a result, the distance between the first precast wall panel 1 and the second precast wall panel 2 is fixed, which can eliminate the connection gap of conventional connectors on the first precast wall panel 1 and the second precast wall panel 2.

[0036] In summary, compared with the existing technology, by using the combination of H-shaped connector 11 and T-shaped cavity 21, the original connection gap can be eliminated, the thickness of the wall can be accurately controlled, and the bonding force between the first precast wall panel 1 and the second precast wall panel 2 can be enhanced.

[0037] Furthermore, the T-shaped cavity 21 is a T-shaped strip cavity with a cross-section that is arranged along the longitudinal direction of the second precast wall panel 2; two opposing stop portions 211 are formed on the side of the T-shaped cavity 21 near the first precast wall panel 1 to prevent the T-shaped end of the H-shaped connector 11 from coming out; each of the opposite end faces of the two stop portions 211 is fixed with an elastic strip 3 to fill the gap between the stop portion 211 and the T-shaped end of the H-shaped connector 11.

[0038] Specifically, the T-shaped cavity 21 is formed by integral molding of the second precast wall panel 2. Multiple T-shaped cavities 21 are parallel to each other and have a T-shaped cross-section. Therefore, the part of the T-shaped cavity 21 near the first precast wall panel 1 is a narrower part, that is, there are two opposing stop parts 211, which can prevent the T-shaped end of the inserted H-shaped connector 11 from detaching from the connection with the T-shaped cavity 21. In order to prevent leakage during mortar injection, elastic strips 3 are fixed on the opposite end faces of the two stop parts 211. The elastic strips 3 are fixedly connected to the two stop parts 211 by bonding, snapping or anchoring. The elastic strips 3 are squeezed towards the middle of the two stop parts 211 and abut against the H-shaped connector 11. Therefore, the elastic strips 3 can eliminate the gap between the T-shaped cavity 21 and the H-shaped connector 11.

[0039] Furthermore, the first precast wall panel 1 is also pre-embedded with a steel cage 12, which includes stirrups 121, multiple vertical bars 122 and multiple horizontal bars. The multiple vertical bars 122 are located inside the first precast wall panel 1 and between the first precast wall panel 1 and the second precast wall panel 2, respectively. The horizontal bars are fixedly connected to the vertical bars 122 inside the first precast wall panel 1, and the stirrups 121 connect the multiple vertical bars 122 in a rectangular shape. Vertical reinforcing bars 122 are distributed within the first precast wall panel 1 and between the first precast wall panel 1 and the second precast wall panel 2. The vertical reinforcing bars 122 within the first precast wall panel 1 are located on the same straight line, and the vertical reinforcing bars 122 between the first precast wall panel 1 and the second precast wall panel 2 are located on the same straight line. Therefore, the stirrups 121 connect multiple vertical reinforcing bars 122 in a rectangular shape, with multiple vertical reinforcing bars 122 located at the four corner positions inside the stirrups 121. The horizontal reinforcing bars and vertical reinforcing bars 122 are fixedly connected by binding or welding to form a steel mesh, which enhances the strength and rigidity of the first precast wall panel 1. Similarly, the second precast wall panel 2 also has a steel mesh.

[0040] Furthermore, multiple vertical ribs 122 are located at the four corners of the stirrups 121, and the H-shaped connectors 11 and the sides of the adjacent stirrups 121 are perpendicular to the first precast wall panel 1. The multiple vertical ribs 122 are respectively tied or welded to the four corners of the stirrups 121, while the H-shaped connectors 11 are parallel to the sides of the stirrups 121 adjacent to the H-shaped connectors 11, and both are perpendicular to the first precast wall panel 1.

[0041] Furthermore, the stirrups 121 and the H-shaped connectors 11 are parallel to each other and alternately arranged laterally, with a certain interval between the stirrups 121, the H-shaped connectors 11, and the second precast wall panel 2. The stirrups 121 are parallel to the H-shaped connectors 11 as a whole, and the stirrups 121 and the H-shaped connectors 11 are alternately arranged between the first precast wall panel 1 and the second precast wall panel 2. The certain interval between the stirrups 121, the H-shaped connectors 11, and the second precast wall panel 2 facilitates the flow of concrete between the first precast wall panel 1 and the second precast wall panel 2.

[0042] Furthermore, the H-shaped connector 11 is made of steel.

[0043] Example 2:

[0044] Reference Figure 3 and Figure 4 This embodiment provides a wall for connecting concrete modules in modular buildings. Specifically, the wall in this embodiment includes modular building wall panels, and also includes outer templates fixedly connected to both sides of the first precast wall panel 1 and the second precast wall panel 2 on each floor, as detailed below.

[0045] In this embodiment, the outer templates on both sides, together with the first precast wall panel 1 and the second precast wall panel 2, form a casting space. The upper and lower casting spaces are aligned and connected. The first precast wall panel 1 and the second precast wall panel 2 are connected as one unit by pouring concrete into the casting space. The alignment of the upper and lower casting spaces means that the first precast wall panel 1 and the second precast wall panel 2 are aligned. Modular buildings are formed by connecting multiple modular units. Therefore, the first precast wall panel 1, the second precast wall panel 2, and the outer templates form the casting space. By pouring concrete into the building space, the first precast wall panel 1 and the second precast wall panel 2 can be connected to form a wall.

[0046] Furthermore, the H-shaped connector 11 is provided with several through holes to allow concrete to pass through. The H-shaped connectors 11 are distributed longitudinally in the pouring space. Therefore, the H-shaped connectors 11 are provided with several through holes to facilitate the passage of concrete and connect the spaces formed by two adjacent H-shaped connectors 11 between the first precast wall panel 1 and the second precast wall panel 2.

[0047] Furthermore, multiple lapped reinforcing bars 4 are provided between the upper and lower walls. These lapped reinforcing bars 4 are located within the casting space, and are respectively attached tightly to the space between the upper and lower first precast wall panels 1 and the upper and lower second precast wall panels 2, and are respectively fixedly connected to the H-shaped connectors 11 in the upper and lower wall panels. The upper and lower walls are formed as a whole by fixing the H-shaped connectors 11 in the upper and lower walls to the lapped reinforcing bars 4. The lapped reinforcing bars 4 are respectively attached tightly to the space between the upper and lower first precast wall panels 1 and the upper and lower second precast wall panels 2, and are fixedly connected to the corresponding H-shaped connectors 11 in the upper and lower walls by welding, snap-fitting, or screwing.

[0048] Furthermore, the first precast wall panel 1 and the second precast wall panel 2 are opposite sides of two concrete modules. Multiple concrete modules are connected by their opposite sides in the horizontal and vertical directions to form a modular building. The concrete module is the building unit in the modular building. A modular building is formed by connecting multiple concrete modules. Since the first precast wall panel 1 and the second precast wall panel 2 are opposite sides of adjacent concrete modules, adjacent concrete modules are connected by connecting the first precast wall panel 1 and the second precast wall panel 2 to form a modular building.

[0049] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0051] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A modular building wall panel with multiple sets of tie structures, characterized in that: It also includes two prefabricated wall panels (1) and two prefabricated wall panels (2) spaced apart, each of the tie structures including an H-shaped connector (11) and a T-shaped cavity (21); One T-shaped end of the H-shaped connector (11) is embedded in the first precast wall panel (1), the T-shaped cavity (21) is provided on the second precast wall panel (2), the other T-shaped end of the H-shaped connector (11) is inserted into the T-shaped cavity (21), and the T-shaped cavity (21) is filled with mortar to fix the T-shaped end inserted therein.

2. The modular building wall panel with multiple sets of tie structures as described in claim 1, characterized in that: The T-shaped cavity (21) is a T-shaped strip cavity that is laid along the longitudinal length of the second precast wall panel (2); The T-shaped cavity (21) has two opposing stops (211) on the side near the first precast wall panel (1) to prevent the T-shaped end of the H-shaped connector (11) from coming out. Each of the two stop portions (211) has an elastic strip (3) fixed to its opposite end face to fill the gap between the stop portion (211) and the T-shaped end of the H-shaped connector (11).

3. The modular building wall panel with multiple sets of tie structures as described in claim 1, characterized in that: The first precast wall panel (1) is also pre-embedded with a steel cage (12). The steel cage (12) includes stirrups (121), multiple vertical bars (122) and multiple horizontal bars. The multiple vertical bars (122) are located in the first precast wall panel (1) and between the first precast wall panel (1) and the second precast wall panel (2). The horizontal bars are fixedly connected to the vertical bars (122) in the first precast wall panel (1). The stirrups (121) connect the multiple vertical bars (122) in a rectangular shape.

4. The modular building wall panel with multiple sets of tie structures as described in claim 3, characterized in that: Multiple vertical bars (122) are located at the four corners of the stirrups (121), and the side of the H-shaped connector (11) and the adjacent stirrups (121) are perpendicular to the first precast wall panel (1).

5. The modular building wall panel with multiple sets of tie structures as described in claim 3, characterized in that: The stirrups (121) and the H-shaped connectors (11) are parallel to each other and alternately arranged in the transverse direction. The stirrups (121) are spaced apart from the H-shaped connectors (11) and the second precast wall panel (2).

6. The modular building wall panel with multiple sets of tie structures as described in claim 1, characterized in that: The H-shaped connector (11) is made of steel.

7. A wall, characterized in that, The modular building wall panel includes multiple layers as described in any one of claims 1-6, and further includes an outer template fixedly connected to both sides of the first prefabricated wall panel (1) and the second prefabricated wall panel (2) in each layer; The outer templates on both sides together with the first precast wall panel (1) and the second precast wall panel (2) form a pouring space. The upper and lower pouring spaces are aligned and connected. The first precast wall panel (1) and the second precast wall panel (2) are connected as one unit by pouring concrete into the pouring space.

8. The wall as described in claim 7, characterized in that: The H-shaped connector (11) is also provided with several through holes to allow the concrete to pass through.

9. The wall as described in claim 7, characterized in that: Multiple lapped steel bars (4) are provided between the upper and lower walls. The lapped steel bars (4) are located in the casting space. The multiple lapped steel bars (4) are respectively attached to the upper and lower first precast wall panels (1) and the upper and lower second precast wall panels (2), and are respectively fixedly connected to the H-shaped connectors (11) in the upper and lower wall panels.

10. The wall as described in claim 7, characterized in that: The first precast wall panel (1) and the second precast wall panel (2) are opposite sides of two concrete modules. Multiple concrete modules are connected by opposite sides in the horizontal and vertical directions to form a modular building.

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