Cored assembly type shear wall structure and method of use

Abstract

The application provides a core pouring assembly type shear wall structure and a use method, and relates to the technical field of building structure engineering. The structure comprises a prefabricated wall plate, a vertical core pouring hole, a horizontal connecting rib, grouting material and a connecting joint and the like. After the prefabricated wall plate is assembled on site, high-performance grouting material is poured into the reserved core pouring hole, and connecting steel bars are inserted, so that reliable connection of the wall and the structure system is realized. The method has the advantages of fast construction speed, good integrity, superior anti-seismic performance, reduced on-site wet work, energy saving and environmental protection and the like, and is suitable for various assembly type building systems.

Description

Technical Field

[0001] This invention relates to the field of building structure engineering technology, specifically to a core-filled prefabricated shear wall structure and its usage method. Background Technology

[0002] Prefabricated construction is an important direction in the current development of building industrialization, offering advantages such as fast construction speed, controllable quality, and environmental friendliness and energy conservation. Shear walls, as crucial lateral force-resisting components in building structures, require particularly robust prefabricated construction. Currently, most common prefabricated shear walls are assembled from precast wall panels and connected by post-cast strips or bolts, resulting in poor connection performance, insufficient overall integrity, and complex construction procedures. In particular, the joints are prone to becoming weak points in the structure, affecting seismic performance. Therefore, there is an urgent need for a prefabricated shear wall structural system that can guarantee both construction efficiency and structural integrity and seismic performance. Summary of the Invention

[0003] This application provides a core-filled prefabricated shear wall structure and its usage method, which achieves a reliable connection between prefabricated wall panels through grouting connection, effectively solving the problems of poor connection performance and insufficient integrity of existing prefabricated shear walls.

[0004] To achieve the above objectives, this application provides the following technical solution: a precast shear wall structure with grouting, comprising precast wall panels, vertical grouting holes, horizontal connecting bars, grouting material, and connection nodes. By filling the grouting holes with grouting material and connecting the vertical reinforcing bars, the overall load-bearing capacity of the wall and structural system is achieved.

[0005] Furthermore, the grouting hole has a circular or rectangular cross-section, which facilitates grouting construction and reinforcement arrangement.

[0006] Furthermore, the grout is a high-strength, non-shrink material, ensuring connection strength and durability.

[0007] Furthermore, the wall panel has a tongue and groove structure at its edge, which facilitates installation, positioning, and waterproofing.

[0008] Furthermore, the vertical connecting steel bars are connected to the upper and lower structures through grouting sleeves, ensuring reliable force transmission.

[0009] Furthermore, the construction method includes steps such as positioning and installation, installation of connecting bars, insertion of bars, grouting and curing, and the process is simple and efficient.

[0010] Furthermore, pressure grouting is used to ensure dense grouting and improve connection quality.

[0011] Furthermore, the ducts should be cleaned and moistened before grouting to avoid grouting defects.

[0012] Furthermore, monitoring is conducted during the grouting process to ensure that the construction quality is controllable.

[0013] Furthermore, the curing time should be no less than 7 days to ensure the development of grouting strength.

[0014] Compared with the prior art, the beneficial effects of this application are: 1. Fast construction speed and less on-site work, which is in line with the development trend of prefabricated buildings; 2. It has good overall structural integrity and excellent seismic performance, meeting the seismic requirements of high-rise buildings; 3. Reliable connection, no shrinkage of grouting material, avoiding cracking at the connection; 4. It has a wide range of applications and can be used in various structural systems such as residential and public buildings. Attached Figure Description

[0015] Figure 1 This is a flowchart of the application process. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] In the description of this application, if directional descriptions are involved, such as "up," "down," "front," "back," "left," "right," etc., indicating directional or positional relationships, they are based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this application and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When a feature is referred to as "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0019] Please see Figure 1 This application provides a precast shear wall structure with grouting, including a precast wall panel 1 with multiple vertically penetrating grouting holes 2 inside. The wall panel edges have tongue and groove joints for easy assembly and positioning. Horizontal connecting bars 3 are arranged at the wall panel joints to connect adjacent wall panels. Vertical connecting bars 5 are inserted into the grouting holes 2 and filled tightly with grout 4. The wall panel and the floor slab 7 are connected by grouting sleeves 6 to form an integrated load-bearing system.

[0020] In use, the precast wall panels are first hoisted to the designed position and temporarily fixed; then, horizontal connecting bars are installed to connect adjacent wall panels; then, vertical connecting bars are inserted into the grouting holes and aligned with the reserved bars or sleeves in the lower structure; next, high-strength non-shrink grout is injected from the top of the grouting holes using pressure grouting equipment until the holes are full and the grout overflows from the top; finally, wet curing is carried out, and subsequent construction is carried out after the grout reaches the designed strength.

[0021] It is worth noting that the grouting material disclosed in this embodiment should preferably be a high-performance, non-shrink grouting material with a strength grade of not less than C40. The diameter of the core hole should preferably be 80mm–120mm, and the diameter of the vertical connecting steel bars should preferably be 12mm–20mm. The ambient temperature during grouting should preferably be above 5℃, and the flowability of the grouting material should be controlled between 250mm and 300mm. An electric grouting pump is recommended, with the pressure controlled between 0.5MPa and 1.0MPa. Vibration and loading should be avoided during curing.

[0022] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A core-filled prefabricated shear wall structure, characterized in that, include: Precast wall panels with vertically penetrating grouting holes inside; Horizontal connecting bars are arranged along the horizontal direction of the wall and are used to connect adjacent precast wall panels; Grouting material is filled into the grouting core holes to achieve the integrity and force transmission performance of the wall; Connection nodes, set between wall panels and floor slabs or beams, include reserved reinforcing bars and grouting sleeves.

2. The core-filled prefabricated shear wall structure according to claim 1, characterized in that, The core-filling holes have a circular or rectangular cross-section and are evenly arranged along the height direction of the wall panel.

3. The core-filled prefabricated shear wall structure according to claim 1, characterized in that, The grouting material is a high-strength, non-shrink grouting material with a compressive strength of not less than C40.

4. The core-filled prefabricated shear wall structure according to claim 1, characterized in that, The edges of the prefabricated wall panels are provided with tongue and groove or interlocking grooves for positioning and connection between wall panels.

5. The core-filled prefabricated shear wall structure according to claim 1, characterized in that, It also includes vertical connecting steel bars, which are inserted into the grouting holes and connected to the upper and lower structural layers.

6. A construction method for a core-filled prefabricated shear wall as described in any one of claims 1-5, characterized in that, Includes the following steps: S1: Precast wall panels are transported to the site and positioned for installation; S2: Install horizontal connecting bars to connect adjacent wall panels; S3: Insert vertical connecting steel bars into the grouting hole; S4: Inject grout from the top of the core-filling hole until the hole is full and the grout overflows; S5: Perform curing and continue subsequent construction after the grouting material reaches the design strength.

7. The construction method according to claim 6, characterized in that, In step S4, pressure grouting equipment is used for injection to ensure that the grout is dense.

8. The construction method according to claim 6, characterized in that, Before grouting, the core holes should be cleaned and moistened.

9. The construction method according to claim 6, characterized in that, Real-time monitoring is conducted during the grouting process to ensure that the grouting is full and free of voids.

10. The construction method according to claim 6, characterized in that, After the grout has initially set, cover and cure it for no less than 7 days.

Images