A bolt dry joint round hole shear wall structure

Abstract

The utility model relates to shear wall connecting technical field discloses a bolt dry joint round hole shear wall structure, including prefabricated foundation, prefabricated shear wall, vertical connecting structure, horizontal connecting structure and superimposed board, the hole passage that is opened in the prefabricated shear wall is through up and down, vertical connecting structure is used for connecting the prefabricated shear wall that is adjacent up and down vertically, horizontal connecting structure is used for connecting the prefabricated shear wall that is adjacent left and right. The utility model discloses the hole passage is set up, realized the structure of wall body four ends no external extension connecting reinforcement, greatly improved the standardization and generalization degree of mould, thereby significantly improved production efficiency and reduced manufacturing cost, the diameter of hole passage is bigger, and the quantity of first connecting piece inside is less, makes the alignment fault tolerance range of reinforcement and hole more wide, thereby significantly reduced the precision requirement of component production and on -the -spot construction.

Description

Technical Field

[0001] This utility model relates to the field of shear wall connection technology, specifically to a bolt-connected circular hole shear wall structure. Background Technology

[0002] With the continuous development of my country's construction industrialization, prefabricated buildings have been widely used in China as an important path to achieve efficient, green, and sustainable construction. Among them, prefabricated shear wall structures have become the mainstream choice for high-rise residential buildings due to their good seismic performance and spatial integrity. However, the existing mainstream prefabricated shear wall systems still have various defects, which to some extent restrict the full realization of the advantages of prefabricated buildings.

[0003] Currently, the core problem with the widely used prefabricated monolithic shear wall structure system lies in its over-reliance on the "wet connection" process. This system typically requires numerous connecting steel bars extending from precast wall panels in multiple directions. This design directly leads to low standardization and universality of precast wall panel molds, increasing production costs and management difficulties. Even more serious is the fact that the system commonly employs grouting sleeve technology to achieve on-site connections of these dense steel bars. This places extremely stringent requirements on the positioning accuracy of the steel bars and sleeves during precast component production; any slight deviation can lead to unsuccessful on-site connections. When the problem extends to the construction site, the poor stiffness of small-diameter protruding steel bars becomes glaringly apparent. They are highly susceptible to displacement during hoisting and docking, making the alignment of the steel bar sleeves and subsequent grouting operations exceptionally difficult, posing a significant challenge to the skill level of construction personnel. This series of problems are interconnected and ultimately converge on a fundamental hidden danger concerning structural safety—the grouting sleeve connection is a concealed project, and the fullness and quality of its grouting are difficult to judge directly and accurately through existing testing methods, thus posing a potential risk to the long-term safety of the building.

[0004] Another type of highly anticipated double-sided composite shear wall structure system, while attempting to achieve breakthroughs through different construction methods, has also encountered new technical difficulties. This system faces challenges in the production stage. Due to limitations in production processes and equipment, precise alignment of the two walls is often difficult to achieve during prefabrication, easily leading to tilting or misalignment, affecting the quality of the components upon delivery. When these components arrive on site, the construction difficulties become even more pronounced: poor positioning accuracy of the vertical lapped reinforcing bars, coupled with interference from the truss reinforcing bars inside the cavity, severely impacts the installation speed and final accuracy of the wall. These challenges collectively lead to a significant reduction in on-site construction efficiency, a large amount of post-cast reinforcing bar binding work, and difficulties in compacting concrete due to the small cavity size (typically only 100mm), significantly diminishing its initial "prefabricated" purpose and failing to fully realize the advantages of industrialized construction.

[0005] In summary, neither the prefabricated monolithic system relying on complex wet connections nor the double-sided composite system facing production and construction challenges has perfectly balanced the relationship between production efficiency, construction convenience, cost control, and structural safety. Therefore, those skilled in the art provide a bolted dry-joint circular hole shear wall structure to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this utility model is to provide a bolt-connected circular hole shear wall structure to solve the problems mentioned in the background art of the prior art.

[0007] This utility model provides the following technical solution: a bolt-connected circular hole shear wall structure, including a precast foundation, a precast shear wall, a vertical connection structure, a horizontal connection structure, and a composite slab. The precast shear wall has a vertically penetrating channel. The vertical connection structure is used to connect vertically adjacent precast shear walls. The vertical connection structure includes a first connector disposed in the channel. The horizontal connection structure is used to connect horizontally adjacent precast shear walls.

[0008] As a preferred embodiment of the above technical solution, the channel is formed by forming a hole in a metal corrugated pipe, and the channel is filled with a filling material.

[0009] As a preferred embodiment of the above technical solution, the first connector is a large-diameter connecting longitudinal rib.

[0010] As a preferred embodiment of the above technical solution, the horizontal connection structure includes embedded connectors pre-embedded in the precast shear wall and bolts for connecting the embedded connectors.

[0011] As a preferred embodiment of the above technical solution, the pre-embedded connector includes a connecting box and a sleeve. A through hole is provided on one side of the connecting box, and a threaded hole adapted to the bolt is provided inside the sleeve. The bolt passes through the connecting box and is threadedly engaged with the threaded hole.

[0012] As a preferred embodiment of the above technical solution, shear wall reinforcing bars are pre-reserved on the prefabricated foundation.

[0013] As a preferred embodiment of the above technical solution, the composite slab extends 10mm into the precast shear wall support.

[0014] As a preferred embodiment of the above technical solution, a post-pouring strip is provided between adjacent composite plates.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model achieves a structure in which the wall has no outward connecting steel bars at the four ends by setting up channels. This greatly improves the standardization and universality of the mold, thereby significantly improving production efficiency and reducing manufacturing costs. At the same time, due to the large diameter of the channels and the small number of internal first connectors, the misalignment range between the steel bars and the holes is wider, thereby significantly reducing the precision requirements for component manufacturing and on-site construction.

[0017] 2. When vertically connecting precast shear walls, this utility model facilitates easier alignment of the large-diameter first connector with the duct, and the concrete inside the duct is easier to pour densely, effectively improving installation efficiency. When horizontally connecting precast shear walls, the pre-embedded connecting box and sleeve are connected by bolts, and then sealed with mortar. This dry operation method replaces the complex rebar binding and grouting processes, significantly accelerating construction speed. Furthermore, this technical solution significantly improves the quality and reliability of the connection nodes. Whether using mechanical connections in vertical connections or bolt connections in horizontal connections, the construction quality is more intuitive and easier to ensure than traditional grouting sleeve connections or rebar lap splices, effectively avoiding structural safety hazards caused by the difficulty in detecting the quality of concealed works. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of a bolt-connected circular hole shear wall structure;

[0019] Figure 2 This is a schematic diagram of the structure after the pre-embedded connection box is installed on the precast shear wall in a bolt-connected circular hole shear wall structure.

[0020] Figure 3 This is a schematic diagram of a connecting box in a bolted dry-joint circular hole shear wall structure.

[0021] Figure 4 This is a schematic diagram of a prefabricated shear wall with a pre-embedded sleeve in a bolt-connected circular hole shear wall structure.

[0022] Figure 5 This is a structural breakdown diagram of a bolted, dry-jointed circular-hole shear wall structure with horizontal connections of precast shear walls.

[0023] Figure 6 This is a structural breakdown diagram of a prefabricated shear wall vertically connected in a bolt-connected circular hole shear wall structure.

[0024] Figure 7 This is a schematic diagram of a prefabricated foundation in a bolt-connected circular hole shear wall structure.

[0025] In the diagram: 1. Precast foundation; 2. Precast shear wall; 201. Duct; 4. Bolt; 5. Composite slab; 6. Connecting box; 601. Through hole; 7. Sleeve; 701. Screw hole. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] Please see Figures 1-7 This utility model provides a technical solution: a bolt-connected circular hole shear wall structure, including a precast foundation 1, a precast shear wall 2, a vertical connection structure, a horizontal connection structure, and a composite slab 5. The precast shear wall 2 has vertically penetrating channels 201. By setting vertically penetrating channels 201 within the precast shear wall 2 and eliminating the need for outward connecting steel bars at the four ends of the wall, the standardization and universality of the mold are greatly improved, thereby increasing production efficiency. The vertical connection structure is used to connect vertically adjacent precast shear walls 2 and includes a first connector disposed within the channel 201. The horizontal connection structure is used to connect horizontally adjacent precast shear walls 2. This design significantly reduces the precision requirements for component fabrication and on-site installation. Due to the large diameter of the channel 201 and the small number of internal connecting steel bars, the alignment tolerance range between the steel bars and the holes is wider, relaxing the precision control standards for component production.

[0028] As one implementation method in this embodiment, please refer to Figure 2 The duct 201 is formed by a corrugated metal pipe, and the duct 201 is filled with a filling material, which is concrete. By pouring concrete into the corrugated metal pipe, the upper and lower precast shear walls 2 are connected into a stable whole structure. At the same time, due to the large diameter of the corrugated metal pipe, the alignment tolerance between the steel bars and the hole is large, which significantly reduces the precision requirements for component manufacturing and installation.

[0029] Before connecting the vertically adjacent precast shear walls 2, the steel bars of the upper and lower layers are mechanically connected. After the connection is completed, the duct 201 of the upper precast shear wall 2 is aligned with the steel bars, and then the upper precast shear wall 2 is installed. After the installation is completed, concrete is poured into the duct 201 to make the upper and lower precast shear walls 2 a whole.

[0030] As one implementation method in this embodiment, please refer to Figure 6 The first connector is a large-diameter connecting longitudinal bar.

[0031] As one implementation method in this embodiment, please refer to Figure 2 , Figure 3 and Figure 5The horizontal connection structure includes embedded connectors pre-embedded in the precast shear wall 2 and bolts 4 used to connect the embedded connectors.

[0032] The pre-embedded connectors include a connector box 6 and a sleeve 7. A through hole 601 is provided on one side of the connector box 6, and a screw hole 701 adapted to the bolt 4 is provided inside the sleeve 7. The bolt 4 passes through the connector box 6 and is threaded into the screw hole 701. After the bolt 4 is connected to the sleeve 7 on the construction site, the cavity is filled with mortar to seal it. This dry operation method not only simplifies the on-site construction process and improves the installation efficiency of the precast shear wall 2, but also significantly improves the quality and reliability of the connection node. Compared with grouting sleeve connection or rebar lap splicing, the construction quality of bolt connection is more intuitive and more guaranteed, effectively avoiding the quality risks brought about by concealed works.

[0033] When connecting two horizontally adjacent precast shear walls 2, first align the connecting box 6 with the sleeve 7, then screw the bolt 4 into the corresponding screw hole 701. After connecting the two precast shear walls 2, fill the cavity with mortar to seal it.

[0034] As one implementation method in this embodiment, please refer to Figure 7 The precast foundation 1 has pre-reserved shear wall reinforcement bars. After mechanically connecting the longitudinal reinforcement bars of the shear wall in the duct 201 with the pre-reserved shear wall reinforcement bars, the precast shear wall 2 is installed on the precast foundation 1. Then, concrete is poured in the duct 201 so that the precast foundation 1 and the precast shear wall 2 become a whole.

[0035] As one implementation method in this embodiment, please refer to Figure 1 The composite slab 5 extends 10mm into the precast shear wall 2 support, effectively achieving effective overlap and anchoring between the floor slab and the wall, ensuring that the load borne by the floor slab can be smoothly transferred to the shear wall.

[0036] A post-cast strip 3 is provided between adjacent composite slabs 5. The post-cast strip 3 can connect the dispersed composite slabs 5 into a continuous and complete floor structure, which can eliminate the joints between the composite slabs 5, so that the entire floor can work together to bear the load, thereby enhancing the overall rigidity of the floor and ensuring the effective transmission of horizontal forces.

[0037] Working principle: First, the longitudinal reinforcement of the shear wall in the duct 201 is mechanically connected to the reserved shear wall dowel bars, and the precast shear wall 2 is installed on the precast foundation 1. Then, concrete is poured in the duct 201 so that the precast foundation 1 and the precast shear wall 2 become a whole.

[0038] When it is necessary to connect two horizontally adjacent precast shear walls 2, first align the connecting box 6 with the sleeve 7, then screw the bolt 4 into the corresponding screw hole 701, and then seal the cavity with mortar.

[0039] When it is necessary to connect vertically adjacent precast shear walls 2, the upper and lower layers of reinforcing bars are first mechanically connected. Then, the duct 201 of the upper precast shear wall 2 is aligned with the reinforcing bars, and the upper precast shear wall 2 is installed. After installation, concrete is poured into the duct 201 to make the upper and lower precast shear walls 2 a whole.

[0040] When it is necessary to connect the precast shear wall 2 and the composite slab 5, extend the composite slab 5 into the support of the precast shear wall 2 by 10mm. Then, pour the post-cast slab strip 3 between the horizontally adjacent composite slabs 5.

[0041] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A bolt-connected circular hole shear wall structure, characterized in that: It includes a precast foundation (1), a precast shear wall (2), a vertical connection structure, a horizontal connection structure, and a composite slab (5). The precast shear wall (2) has a vertically penetrating channel (201). The vertical connection structure is used to connect the vertically adjacent precast shear walls (2). The vertical connection structure includes a first connector set in the channel (201). The horizontal connection structure is used to connect the left and right adjacent precast shear walls (2).

2. The bolt-connected circular hole shear wall structure according to claim 1, characterized in that: The channel (201) is formed by forming a hole in a metal corrugated pipe, and the channel (201) is filled with filling material.

3. The bolt-connected circular hole shear wall structure according to claim 1, characterized in that: The first connector is a large-diameter connecting longitudinal bar.

4. A bolt-connected circular hole shear wall structure according to claim 1, characterized in that: The horizontal connection structure includes embedded connectors pre-embedded in the precast shear wall (2) and bolts (4) for connecting the embedded connectors.

5. A bolt-connected circular hole shear wall structure according to claim 4, characterized in that: The pre-embedded connector includes a connecting box (6) and a sleeve (7). A through hole (601) is provided on one side of the connecting box (6), and a screw hole (701) adapted to the bolt (4) is provided in the sleeve (7). The bolt (4) passes through the connecting box (6) and is threaded into the screw hole (701).

6. A bolt-connected circular hole shear wall structure according to claim 1, characterized in that: The precast foundation (1) has pre-reserved shear wall reinforcement bars.

7. A bolt-connected circular hole shear wall structure according to claim 1, characterized in that: The composite slab (5) extends 10 mm into the support of the precast shear wall (2).

8. A bolt-connected circular hole shear wall structure according to claim 1, characterized in that: A post-cast strip (3) is provided between adjacent composite slabs (5).

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