A construction method for a prefabricated modular seismic-resistant building structure and its seismic-resistant structure

Abstract

This invention discloses a construction method and seismic-resistant structure for prefabricated modular buildings, comprising the following steps: prefabricating several housing units and embedding self-locking corrugated pipes inside the walls; setting wall panel truss reinforcement on the splicing surface of the housing units on the same floor; setting a top plate connection part on the top plate on the splicing side of the housing unit and setting top plate truss reinforcement on the top plate connection part; connecting the self-locking corrugated pipes of housing units on different floors to form a post-casting channel; forming a post-casting cavity between the side walls of adjacent housing units on the splicing side on the same floor; and forming a post-casting layer at the top plate connection part; and pouring concrete in the post-casting channel, post-casting cavity, and post-casting layer to complete the construction; in this invention, wall panel truss reinforcement and top plate truss reinforcement are set on the wall panel splicing surface and the top plate connection part of the housing units, and then post-cast concrete is poured, so that the connection between the housing units forms a superimposed structure, ensuring the stability and integrity of the housing unit connection.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building technology, and in particular to a construction method and seismic-resistant structure for prefabricated modular buildings. Background Technology

[0002] PPVC is short for prefabricated modular building. PPVC refers to a building that is divided into several spatial modules, with all equipment, pipelines, decoration, and fixed furniture pre-installed within each module, and the exterior facade can also be completed. These modular components are transported to the construction site and assembled together like "building blocks." It is a high-end product of industrialized construction and has a high degree of integrity.

[0003] Existing modular concrete structures are only connected by walls between modules, with no horizontal connection in the floor slabs, making collaborative work impossible. The walls of modular concrete structures are all precast components, and the edges of the walls cannot be fully post-cast with concrete. Furthermore, the walls contain a single layer of steel mesh, which cannot form edge members that meet the required reinforcement and stirrup ratios, resulting in insufficient overall lateral force resistance of the structure.

[0004] Currently, existing inventions, such as the "Concrete Box-Type Building Module, Modular Building and its Construction Method" with publication number CN114033219A, use vertically connected grouted anchors to connect steel bars in the cast-in-place cavity, horizontally connected grooves to weld steel plates, and through interlocking grooves and bonding to the module surface to fix them into a whole. However, the integrity and overall rigidity of the floor slab cannot be well guaranteed by welding steel plates.

[0005] For example, the patent application CN213268442U, titled "A Prefabricated Side Panel Structure for PPVC Modules," proposes that adjacent spatial modules are connected by connectors installed in the mounting groove through the side panel structure, and by the mutual cooperation of the limiting groove and limiting block, and by pouring high-strength cement to securely connect the adjacent spatial modules. This method can improve the integrity of the left and right walls of the module, but the strength of the connectors is limited, and the load-bearing capacity of the wall cannot be guaranteed under conditions such as earthquakes.

[0006] To address the aforementioned problems, this invention provides a construction method and seismic-resistant structure for prefabricated modular buildings, thereby resolving the issue of unstable assembly and connection in existing modular building structures. Summary of the Invention

[0007] The purpose of this invention is to provide a construction method and seismic structure for prefabricated modular building structures, thereby improving the assembly stability of modular building structures and ensuring good overall integrity.

[0008] To achieve the above objectives, the present invention provides the following solution:

[0009] A construction method for a prefabricated modular seismic-resistant building structure includes the following steps:

[0010] Several housing units are prefabricated and self-locking corrugated pipes are pre-embedded inside the walls. Wall panel truss reinforcement is set on the splicing surface of the housing units on the same floor. A top plate connection part is set on the top plate on the splicing side of the housing units and a top plate truss reinforcement is set on the top plate connection part.

[0011] The self-locking corrugated pipes of the building units on different floors are connected to form a post-pouring channel. A post-pouring cavity is formed between the side walls of adjacent building units on the same floor for splicing one side. A post-pouring layer is formed at the connection part of adjacent roof slabs on the same floor. The post-pouring cavity is connected to the post-pouring layer.

[0012] Construction is completed by pouring concrete into the post-pouring channel, the post-pouring cavity, and the post-pouring layer.

[0013] A prefabricated modular seismic-resistant building structure includes several housing units for splicing into a seismic-resistant building structure. Each housing unit includes an enclosing top slab, wall panels, and a bottom slab. A top slab connection portion is provided at the connection end of the top slab of adjacent housing units on the same floor. The top slab connection portion includes an installation groove formed on the top slab and top slab truss reinforcement bars disposed within the installation groove. The top slab truss reinforcement bars in two adjacent installation grooves are connected by connecting bars. Wall panel truss reinforcement bars are provided on the splicing side of the wall panels. A post-cast cavity is formed between two adjacent wall panels. Longitudinal dowel bars connected to the wall panel truss reinforcement bars and extending upwards to connect with the connecting bars are disposed within the post-cast cavity. The post-cast cavity within the installation groove and between adjacent prefabricated inner wall panels is used for pouring integrally formed concrete.

[0014] Preferably, the edge area of ​​the wall panel is provided with an edge member hollow portion, and the edge member hollow portion is provided with wall panel outgoing steel bars extending out of the wall panel, edge member longitudinal bars perpendicular to the wall panel outgoing steel bars and connected to the wall panel outgoing steel bars, the edge member longitudinal bars extend upward and are connected to the connecting bars, and the concrete poured into the edge member hollow portion is integrally formed with the concrete poured into the post-pouring cavity.

[0015] Preferably, two edge member cutouts are provided on the same side edge of the wall panel, and are located at the top and bottom of the wall panel respectively, with each edge member cutout occupying one-third of the total height of the wall panel.

[0016] Preferably, the longitudinal reinforcement bars of the edge members on two adjacent wall panels are connected by edge member stirrups and C-shaped tie bars.

[0017] Preferably, transverse main reinforcement bars are provided in the post-cast cavity along the transverse direction of the wall panel, and the transverse main reinforcement bars pass through the wall panel truss reinforcement bars on the adjacent wall panels in sequence.

[0018] Preferably, self-locking corrugated pipes are pre-embedded in the wall panels of adjacent building units on different floors and are connected by the self-locking corrugated pipes. Corrugated pipe inserts are inserted into the self-locking corrugated pipes, and the corrugated pipe inserts on different floors are connected to each other. The self-locking corrugated pipes are used to fill concrete.

[0019] Preferably, spiral stirrups are provided at the connection points of the corrugated pipe inserts in different layers.

[0020] Preferably, the upper inner wall of the self-locking corrugated pipe is provided with a plurality of inclined downward steel plates along the circumference of the self-locking corrugated pipe, and the lower end of the self-locking corrugated pipe is provided with a self-locking bayonet.

[0021] Preferably, the self-locking latch includes a lower end constriction wall of the corrugated pipe and a lower end constriction edge of the corrugated pipe disposed at the end of the lower end constriction wall of the corrugated pipe.

[0022] The present invention achieves the following technical effects compared to the prior art:

[0023] 1. In this invention, wall panel truss reinforcement and roof panel truss reinforcement are provided on the wall panel splicing surface and roof panel connection part of the housing unit, and then concrete is poured afterward, so that the connection between housing units forms a superimposed structure, ensuring the stability and integrity of the housing unit connection.

[0024] 2. In this invention, a post-cast cavity is formed between two adjacent wall panels. The post-cast cavity is provided with longitudinal dowel bars that are connected to the wall panel truss reinforcement and extend upward to connect with the connecting bars. The post-cast cavity in the installation groove and between adjacent precast inner wall panels is used to pour integrally formed concrete. Since the installation groove and the post-cast cavity are connected, the integrally cast concrete ensures the integrity of the connection between the wall panel and the top plate and strengthens the stability of the connection between them.

[0025] 3. In this invention, the edge area of ​​the wall panel is provided with an edge component hollow part. The edge component hollow part is provided with wall panel extension steel bars extending out of the wall panel, edge component longitudinal bars perpendicular to the wall panel extension steel bars and connected to the wall panel extension steel bars, the edge component longitudinal bars extend upward and are connected to the connecting bars, and the concrete poured into the edge component hollow part is integrally formed with the concrete poured into the post-pouring cavity. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Appendix Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Appendix Figure 2 This is a cross-sectional view of the overlapping connection section of the inner wall truss reinforcement of the present invention;

[0029] Appendix Figure 3 This is a schematic diagram of the reinforcing steel bars in the post-cast connection section of the edge member of the present invention (1 / 3).

[0030] Appendix Figure 4 This is a schematic diagram of the composite connection section of the top slab truss reinforcement in this invention;

[0031] Appendix Figure 5 This is a front view of the post-cast reinforcement of the present invention;

[0032] Appendix Figure 6 This is a top view of the post-cast reinforcement of the present invention;

[0033] Appendix Figure 7 This is a schematic diagram of the wall structure of the present invention;

[0034] Appendix Figure 8 This is a schematic diagram of the upper end of the self-locking bellows of the present invention;

[0035] Appendix Figure 9 This is a schematic diagram of the lower end of the self-locking bellows of the present invention;

[0036] Appendix Figure 10 This is a schematic diagram of the connection between the upper and lower ends of the self-locking bellows of the present invention;

[0037] Among them, 1. Top slab; 2. Top slab connection part; 3. Wall panel; 4. Perforated part of edge component; 5. Self-locking corrugated pipe; 6. Longitudinal reinforcement of edge component; 7. Reinforcing bar of wall panel truss; 8. Prefabricated part of edge component; 9. Outward reinforcing bar of wall panel; 10. Bent-up reinforcing bar of inner wall; 11. Horizontal reinforcement of top of wall panel; 12. Reinforcing bar of top slab truss; 13. Connecting bar; 14. C-shaped tie bar; 15. Stirrup of edge component; 16. Longitudinal dowel bar; 17. Wall panel; 18. Steel sheet; 19. Lower end of corrugated pipe; 20. Lower end of corrugated pipe; 21. Inner dowel bar of corrugated pipe; 22. Spiral stirrup. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] The purpose of this invention is to provide a construction method and seismic structure for prefabricated modular building structures, thereby improving the assembly stability of modular building structures and ensuring good overall integrity.

[0040] A construction method for a prefabricated modular seismic-resistant building structure includes the following steps: prefabricating several house units and embedding self-locking corrugated pipes inside the walls; setting wall panel truss reinforcement on the splicing surface of the house units on the same floor; setting a top plate connection part on the top plate on the splicing side of the house unit and setting top plate truss reinforcement on the top plate connection part; connecting the self-locking corrugated pipes of house units on different floors to form a post-casting channel; forming a post-casting cavity between the side walls of adjacent house units on the splicing side on the same floor; forming a post-casting layer at the connection part of adjacent top plates on the same floor; and connecting the post-casting cavity and the post-casting layer; pouring concrete in the post-casting channel, the post-casting cavity, and the post-casting layer to complete the construction; in this invention, wall panel truss reinforcement and top plate truss reinforcement are set on the wall panel splicing surface and the top plate connection part of the house unit, and then post-casting concrete is poured, so that the connection between the house units forms a superimposed structure, ensuring the stability and integrity of the connection between the house units.

[0041] refer to Figures 1 to 7 A prefabricated modular seismic-resistant building structure includes several housing units for splicing into a seismic-resistant building structure. Each housing unit includes an enclosing top slab, wall panels, and a bottom slab. A top slab connection portion is provided at the connection end of the top slab of adjacent housing units on the same floor. The top slab connection portion includes an installation groove formed in the top slab and top slab truss reinforcement bars set within the installation groove. The top slab truss reinforcement bars in two adjacent installation grooves are connected by connecting bars. Wall panel truss reinforcement bars are provided on the splicing side of the wall panel. A post-cast cavity is formed between two adjacent wall panels. Longitudinal dowel bars connected to the wall panel truss reinforcement bars and extending upwards to connect with the connecting bars are provided in the post-cast cavity. The post-cast cavity between the installation groove and the adjacent prefabricated inner wall panel is used to pour integrally formed concrete. In this invention, because the installation groove and the post-cast cavity are connected, the integrally cast concrete ensures the integrity of the connection between the wall panel and the top slab and enhances the stability of the connection between them.

[0042] refer to Figure 7The edge area of ​​the wall panel is provided with an edge component hollow section. The edge component hollow section is provided with wall panel protruding steel bars extending out of the wall panel, edge component longitudinal bars perpendicular to the wall panel protruding steel bars and connected to the wall panel protruding steel bars, edge component longitudinal bars extend upward and are connected to connecting bars, and the concrete poured into the edge component hollow section is integrally formed with the concrete poured into the post-pouring cavity.

[0043] refer to Figure 7 Two edge member cutouts are provided on the same side edge of the wall panel, located at the top and bottom of the wall panel respectively, with each edge member cutout occupying one-third of the total height of the wall panel.

[0044] refer to Figure 5 The longitudinal reinforcement bars of the edge members on two adjacent wall panels are connected by edge member stirrups and C-shaped tie bars.

[0045] refer to Figure 2 The post-cast cavity is provided with horizontal bars at the top of the wall panel along the transverse direction of the wall panel, and the horizontal bars at the top of the wall panel pass through the wall panel truss bars on the adjacent wall panels in sequence.

[0046] refer to Figure 1 Self-locking corrugated pipes are pre-embedded in the wall panels of adjacent building units on different floors and are connected by the self-locking corrugated pipes. Corrugated pipe inserts are inserted into the self-locking corrugated pipes. The corrugated pipe inserts on different floors are connected to each other. The self-locking corrugated pipes are used to fill concrete.

[0047] refer to Figure 10 Spiral stirrups are provided at the connection points of the corrugated pipes in different layers.

[0048] refer to Figure 8 The upper inner wall of the self-locking corrugated pipe is provided with several inclined downward steel plates along the circumference of the self-locking corrugated pipe, and the lower end of the self-locking corrugated pipe is provided with a self-locking bayonet.

[0049] refer to Figure 9 The self-locking bayonet includes the lower end constriction wall of the corrugated pipe and the lower end constriction edge of the corrugated pipe provided at the end of the lower end constriction wall.

[0050] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0051] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A prefabricated modular seismic-resistant building structure, characterized in that, The system includes several housing units for splicing into a seismic-resistant building structure. Each housing unit includes an enclosing top slab, wall panels, and bottom slab. The top slab connection ends of adjacent housing units on the same floor are provided with top slab connection parts. Each top slab connection part includes an installation groove on the top slab and top slab truss reinforcement bars provided in the installation groove. The top slab truss reinforcement bars in two adjacent installation grooves are connected by connecting bars. The wall panels are provided with wall panel truss reinforcement bars on the splicing side. A post-cast cavity is formed between two adjacent wall panels. The post-cast cavity is provided with longitudinal dowel bars that are connected to the wall panel truss reinforcement bars and extend upward to connect with the connecting bars. The post-cast cavity in the installation groove and between adjacent precast inner wall panels is used to pour integrally formed concrete. The edge area of ​​the wall panel is provided with an edge member hollow part. The edge member hollow part is provided with wall panel extension steel bars extending out of the wall panel and edge member longitudinal bars perpendicular to the wall panel extension steel bars and connected to the wall panel extension steel bars. The edge member longitudinal bars extend upward and are connected to the connecting bars. The concrete poured into the edge member hollow part is integrally formed with the concrete poured into the post-pouring cavity. The longitudinal reinforcement bars of the edge members on two adjacent wall panels are connected by edge member stirrups and C-shaped tie bars.

2. The prefabricated modular seismic-resistant building structure according to claim 1, characterized in that, Two edge member cutouts are provided on the same side edge of the wall panel, and are located at the top and bottom of the wall panel respectively. Each edge member cutout occupies one-third of the total height of the wall panel.

3. The prefabricated modular seismic-resistant building structure according to claim 1, characterized in that, The post-cast cavity is provided with transverse main reinforcement bars along the transverse direction of the wall panel, and the transverse main reinforcement bars pass through the wall panel truss reinforcement bars on the adjacent wall panels in sequence.

4. The prefabricated modular seismic-resistant building structure according to claim 1, characterized in that, Self-locking corrugated pipes are pre-embedded in the wall panels of adjacent building units on different floors and are connected by the self-locking corrugated pipes. Corrugated pipe inserts are inserted into the self-locking corrugated pipes. The corrugated pipe inserts on different floors are connected to each other. The self-locking corrugated pipes are used to fill concrete.

5. A prefabricated modular seismic-resistant building structure according to claim 4, characterized in that, Spiral stirrups are provided at the connection points of the corrugated pipes in different layers.

6. A prefabricated modular seismic-resistant building structure according to claim 4, characterized in that, The upper inner wall of the self-locking corrugated pipe is provided with several inclined downward steel plates along the circumference of the self-locking corrugated pipe, and the lower end of the self-locking corrugated pipe is provided with a self-locking bayonet.

7. A prefabricated modular seismic-resistant building structure according to claim 6, characterized in that, The self-locking bayonet includes a lower end constriction wall of the corrugated pipe and a lower end constriction edge of the corrugated pipe disposed at the end of the lower end constriction wall of the corrugated pipe.

8. A construction method for a prefabricated modular seismic-resistant building structure, characterized in that, Includes the following steps: Several housing units are prefabricated and self-locking corrugated pipes are pre-embedded inside the walls. Wall panel truss reinforcement is set on the splicing surface of the housing units on the same floor. A top plate connection part is set on the top plate on the splicing side of the housing units and a top plate truss reinforcement is set on the top plate connection part. The self-locking corrugated pipes of the building units on different floors are connected to form a post-pouring channel. A post-pouring cavity is formed between the side walls of adjacent building units on the same floor for splicing one side. A post-pouring layer is formed at the connection part of adjacent roof slabs on the same floor. The post-pouring cavity is connected to the post-pouring layer. Construction is completed by pouring concrete into the post-pouring channel, the post-pouring cavity, and the post-pouring layer.

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