Novel composite shear wall connecting joint suitable for concrete modular integrated building

Abstract

A novel superimposed shear wall connection node suitable for a concrete modular integrated building relates to the technical field of modular integrated buildings, and comprises a pair of prefabricated wall bodies which are oppositely arranged front and back to form a pouring space and a post-pouring wall body which is formed after the pouring space is poured, the prefabricated wall bodies are of L-shaped structures from an overlook view, and the post-pouring wall body is of an L-shaped structure. Splicing grooves are formed in the spliced sides of the prefabricated wall bodies, and the pouring space is formed after the two splicing grooves are spliced front and back; truss ribs are embedded in the prefabricated wall bodies, when the two prefabricated wall bodies are spliced, the truss ribs of the two prefabricated wall bodies are in lap joint up and down, horizontal additional ribs are evenly embedded in the pouring space in the vertical direction at intervals, one ends of the horizontal additional ribs are embedded in the prefabricated wall bodies, and after pouring, the other ends of the horizontal additional ribs are embedded in the post-pouring wall body.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of modular integrated construction, and particularly relates to a novel laminated shear wall connecting joint suitable for concrete modular integrated construction. BACKGROUND

[0002] Modular integrated construction (MIC) is an advanced construction method that designs and manufactures each unit of a building as a prefabricated module. These prefabricated modules integrate all elements such as structure, interior decoration, and mechanical and electrical systems in a factory, ensuring high quality and consistency. Subsequently, these prefabricated modules are transported to the construction site and assembled through reliable connections, thereby rapidly completing the entire construction project.

[0003] The MIC method has many advantages, such as high integration, efficient construction, shortened construction period, and reduced site pollution. It makes the construction process more controllable and improves the quality and safety of construction.

[0004] In modular integrated construction, shear walls are important structural components that bear the horizontal loads of buildings, such as wind loads and seismic loads. However, there are still some deficiencies in the practical application of MIC shear wall assembly components.

[0005] Insufficient bonding:

[0006] The connection between adjacent wall components is crucial to ensure the structural integrity and seismic performance of the structure. However, the existing connection methods often have the problem of insufficient bonding. This may be due to deficiencies in connection materials, connection processes, or connection design. Insufficient bonding can seriously affect the overall stability of the wall and reduce the seismic performance of the structure.

[0007] Weak structural integrity:

[0008] Due to the insecure connection between adjacent wall components, the structural integrity of the entire shear wall system is also affected. When subjected to external forces, relative displacement or deformation may occur between wall components, leading to a decline in the overall performance of the structure.

[0009] Insufficient seismic performance:

[0010] For buildings located in earthquake-prone areas, seismic performance is crucial. However, due to the deficiencies in the connection method of existing MIC shear wall assembly components, its seismic performance often cannot meet the design requirements. Under strong seismic action, the wall may suffer serious damage or even collapse, posing a serious threat to the safety of life and property. INVENTION CONTENTS

[0011] The utility model discloses a new type of composite shear wall connecting joint suitable for concrete modular integrated building, to solve the technical problem pointed out in the background art.

[0012] To solve the above technical problems, the utility model adopts the technical scheme that:

[0013] A new type of composite shear wall connecting joint suitable for concrete modular integrated building, including a pair of prefabricated wall body that is arranged opposite and forms pouring space, and the post-poured wall body formed after pouring space is poured, from the perspective, the prefabricated wall body is L type structure, and the side of prefabricated wall body splicing forms splicing groove, and two splicing grooves form pouring space after splicing back and forth.

[0014] The prefabricated wall body is embedded with truss bar, and when two prefabricated wall bodies are spliced, the truss bars of two prefabricated wall bodies are overlapped up and down, and horizontal additional bars are embedded in the pouring space along the vertical direction at uniform intervals, one end of the horizontal additional bar is embedded in the prefabricated wall body, and after pouring, the other end is embedded in the post-poured wall body.

[0015] Further, the prefabricated wall body includes integrally prefabricated edge member and partial wall body, and the partial wall body of two prefabricated wall bodies constitutes the front and back sidewalls of the pouring space, and the edge member is partially arranged in a single module box, and the stirrup in the edge member is an integral stirrup.

[0016] Further, the prefabricated wall body edge member is provided with vertical steel bars at the upper end, and the vertical steel bars are upwardly extended, and the steel bars are overlapped and post-poured through the intermediate reserved wall opening, so that the upper and lower layers are connected.

[0017] Further, the truss bar is a "several" character-shaped structure, the opening side of the truss bar is integrally prefabricated with the partial wall body, and the closed side of the truss bar is located in the pouring space.

[0018] Further, the truss bars are distributed at a horizontal interval of 200mm, and the diameter of the truss bar is 10mm.

[0019] Further, after the two truss bars are overlapped and overlapped up and down, the vertical steel bars are arranged in the truss bars.

[0020] Further, the horizontal additional bars are embedded in the prefabricated wall body and the post-poured wall body at a vertical interval of 200mm.

[0021] Compared with the prior art, the utility model has the beneficial effects that:

[0022] The utility model provides a novel shear wall connecting joint adopts L type prefabricated wall splicing forms the pouring space, embeds truss muscle and overlaps simultaneously up and down, inserts horizontal additional muscle in the pouring space, finally pours concrete and forms post pouring wall body, realizes efficient, stable connection in modular integrated building. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0024] Fig. 1 It is the structural schematic diagram of the utility model;

[0025] Fig. 2 It is the unspliced top view of the utility model;

[0026] Fig. 3 It is the top view after splicing of the utility model. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiment of the utility model will be clearly and completely described below, obviously, the described embodiment only is a part of the embodiment of the utility model, is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by ordinary skilled person in the art without making creative labor belong to the range of protection of the utility model.

[0028] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore can not be understood as the limitation of the utility model.

[0029] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can through intermediate medium indirectly connect, can be two element inside communication or two element's mutual action relationship.For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0030] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium.Moreover, the first feature can be directly above or obliquely above the second feature, or it can only mean that the first feature is higher than the second feature in horizontal height.The first feature can be directly below or obliquely below the second feature, or it can only mean that the first feature is lower than the second feature in horizontal height.

[0031] As shown in Figs. 1-3 A new type of composite shear wall connecting joint suitable for concrete modular integrated building, comprising a pair of prefabricated walls 1 arranged oppositely to form a pouring space, and a post-poured wall 2 formed after pouring the pouring space, as viewed from the top, the prefabricated wall 1 is an L-shaped structure, one side of the prefabricated wall 1 forms a splicing groove, and two splicing grooves form the pouring space after splicing front and back.

[0032] The prefabricated wall 1 is embedded with truss bars 3, and the truss bars 3 of the two prefabricated walls 1 are overlapped when the two prefabricated walls 1 are spliced, and horizontal additional bars 6 are uniformly embedded in the pouring space along the vertical direction, one end of the horizontal additional bar 6 is embedded in the prefabricated wall 1, and after pouring, the other end is embedded in the post-poured wall 2.The truss bars ensure that the walls do not separate and are mutually engaged when stressed, and by limiting the displacement in all directions between the vertical bars of the wall and the engaged steel bars, the overall structure is enhanced.The horizontal additional bars are embedded between the prefabricated and post-poured walls, increasing the seismic performance of the wall, improving the overall stability, preventing wall deformation and cracking.

[0033] Among them, the precast wall 1 is designed as an L-shaped structure. Such a design not only facilitates modular assembly but also forms a stable pouring space during splicing. The splicing side of the precast wall 1 is provided with a splicing groove, enabling two precast walls 1 to be arranged opposite to each other front and back and spliced tightly. When two precast walls 1 are spliced, the splicing grooves of the two precast walls 1 correspond to each other, forming a continuous and closed pouring space. Truss bars 3 are embedded inside the precast wall 1, and these truss bars 3 have been accurately positioned and fixed during the manufacturing process of the precast wall 1. When two precast walls 1 are spliced, the truss bars 3 of the two precast walls 1 will overlap vertically. This overlapping method can ensure that effective connections are formed between the truss bars 3 when pouring concrete, thereby enhancing the structural strength of the entire wall. Inside the pouring space, horizontal additional bars 6 are evenly embedded at intervals in the vertical direction. One end of these horizontal additional bars 6 is embedded inside the precast wall 1, while the other end waits to be embedded inside the post-cast wall 2 when pouring concrete. The addition of the horizontal additional bars 6 can further enhance the integrity and stability of the wall. The two precast walls 1 and the truss bars 3 together form a complex steel bar network, enabling the entire wall to exhibit higher strength and toughness when bearing external forces. After the two precast walls 1 are spliced and the truss bars 3 and horizontal additional bars 6 are fixed, the next step is to pour concrete into the pouring space. During the pouring process, the concrete will fill the entire pouring space and tightly combine with the precast wall 1, truss bars 3, and horizontal additional bars 6. When the concrete solidifies, the post-cast wall 2 is formed. The post-cast wall 2 and the precast wall 1 form an integral whole through the connection of concrete and steel bars, thereby achieving the continuity and stability of the wall.

[0034] Specifically, as shown in the figure, the precast wall 1 includes an integrally precast edge member and a partial wall. The partial walls of the two precast walls 1 form the front and back side walls of the pouring space. The edge member part is arranged inside a single modular box, and the stirrups 4 inside the edge member are full stirrups, enhancing the overall mechanical properties.

[0035] Specifically, as shown in the figure, vertical steel bars 5 are arranged at the upper end of the edge member of the precast wall. The vertical steel bars 5 extend upward, and steel bar lapping and post-casting are carried out through a reserved wall opening in the middle to achieve the connection between the upper and lower layers.

[0036] Specifically, as shown in the figure, the truss bar 3 is of a "ji" - shaped structure. The open side of the truss bar 3 is integrally precast with the partial wall, and the closed side of the truss bar 3 is located inside the pouring space.

[0037] Specifically, as shown in the figure, the truss bars 3 are distributed at a horizontal interval of 200 mm, and the diameter of the truss bars 3 is 10 mm.

[0038] Specifically, as shown in the figure, after two truss bars 3 are overlapped vertically and offset, a biting steel bar 7 is arranged vertically in the truss bar 3.

[0039] Specifically, as shown in the figure, the horizontal additional rib 6 is embedded in the prefabricated wall body 1 and the post-cast wall body 2 at a vertical interval of 200 mm. The overall stability of the wall body is improved, and the wall body is prevented from deforming and cracking. The site filling concrete is dense, and the width of the intermediate post-cast part is adjusted to 120 mm, and the minimum wall thickness is 250 mm.

[0040] The utility model provides a novel shear wall connecting joint adopts L type prefabricated wall body splicing forms the pouring space, embeds truss rib and overlaps simultaneously up and down, inserts horizontal additional rib in the pouring space, finally pours concrete and forms post-cast wall body, realizes the efficient, stable connection in modular integrated building. The technical scheme not only improves the structural strength and the seismic performance of wall body significantly, but also simplifies the construction process, reduces the cost, reduces the complexity of construction, improves construction efficiency and production progress, is applicable to the building application scene widely, provides an efficient, reliable connecting solution for modular integrated building.

[0041] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement etc. that are made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

[0042] In addition, it should be understood that, although the present specification is described according to the embodiments, not every embodiment contains only one independent technical scheme, the description mode of the specification is only for the sake of clarity, the skilled in the art should consider the specification as a whole, and the technical scheme in each embodiment can also be combined appropriately to form other embodiments that can be understood by the skilled in the art.

Claims

1. A new type of composite shear wall connection joint suitable for modular integrated construction of concrete, characterized by, It includes a pair of precast walls that are arranged opposite to each other front and back to form a casting space, and a post-cast wall formed after casting the casting space. From a top view, the precast wall is of an L-shaped structure. One side where the precast walls are spliced forms a splicing groove, and the two splicing grooves are spliced front and back to form the casting space; The precast wall is embedded with truss bars. When two precast walls are spliced, the truss bars of the two precast walls are overlapped up and down. Horizontally additional bars are evenly embedded at intervals in the vertical direction in the casting space. One end of the horizontally additional bar is embedded in the precast wall, and after casting, the other end is embedded in the post-cast wall.

2. A new type of composite shear wall connection joint suitable for concrete modular integrated buildings according to claim 1, characterized in that, The precast wall includes an edge member and a partial wall that are integrally precast. The partial walls of the two precast walls form the front and back side walls of the casting space. The edge member is partially arranged in a single modular box, and the stirrups in the edge member are complete stirrups.

3. A new type of composite shear wall connection joint suitable for modular integrated building of concrete according to claim 2, characterized in that, Vertical steel bars are arranged at the upper end of the edge member of the precast wall. The vertical steel bars extend upward, and steel bar lapping and post-casting are carried out through a reserved wall opening in the middle to achieve the connection between the upper and lower layers.

4. A new type of composite shear wall connection joint suitable for modular integrated building of concrete according to claim 3, characterized in that, The truss bar is of a "ji" - shaped structure. The open side of the truss bar is integrally precast with the partial wall, and the closed side of the truss bar (3) is located in the casting space.

5. A new type of composite shear wall connection joint suitable for concrete modular integrated buildings according to claim 4, characterized in that, The truss bars are distributed at a horizontal interval of 200 mm, and the diameter of the truss bars is 10 mm.

6. A new type of composite shear wall connection joint suitable for modular integrated building of concrete according to claim 5, characterized in that, After the two truss bars are overlapped and staggered up and down, there are engaging steel bars vertically arranged in the truss bars.

7. A new type of composite shear wall connection joint suitable for modular integrated building of concrete according to claim 6, characterized in that, The horizontally additional bars are embedded in the precast wall and the post-cast wall at a vertical interval of 200 mm.

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