A prefabricated double-layer steel plate composite shear wall with penetrating bars

Abstract

This application relates to the field of building construction technology, and provides a precast double-layer steel plate composite shear wall with through-stiffening, including end steel pipes, two side steel plates, perforated stiffening components, and through-stiffening structures. A closed cavity is formed by welding and filled with concrete, achieving efficient collaboration between the steel plates and concrete. Its advantages include: the through-stiffening components enhance the restraint effect, increasing load-bearing capacity and ductility; precast components can be transported and installed in sections, reducing costs and losses; and the cross-sectional shape is flexible, adapting to diverse building needs. This utility model is applicable to shear wall structures in high-rise buildings, offering significant economic and technical benefits.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, specifically relating to a precast double-layer steel plate composite shear wall with through-reinforcement. Background Technology

[0002] With urbanization, the demand for high-rise buildings is increasing. As a primary lateral force resisting component, the construction efficiency and quality of shear walls directly affect building performance. Traditional shear walls mostly utilize cast-in-place concrete or welded steel plate structures, which present the following problems:

[0003] Construction is complex: there is a large amount of on-site welding, complicated procedures, and a long construction period;

[0004] Transportation difficulties: Large prefabricated components are bulky and have low rigidity, making them prone to deformation and damage during transportation and hoisting;

[0005] Low standardization: Fixed dimensions make it difficult to adapt to diverse building needs;

[0006] Poor material synergy: The steel plate and concrete do not provide sufficient restraint, which affects the load-bearing capacity and ductility.

[0007] To solve the above problems, there is an urgent need for a prefabricated shear wall structure that is highly standardized, easy to industrialize, and has excellent mechanical properties. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a precast double-layer steel plate composite shear wall with through-reinforcement, which is simple in structure, convenient in construction and transportation, and has superior mechanical properties. By optimizing the structural design, it achieves efficient synergy between steel plates and concrete, thereby improving load-bearing capacity, ductility and resistance to deformation.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a precast double-layer steel plate composite shear wall with through-reinforcement, comprising a composite wall and steel pipes disposed at one or both ends of the composite wall; the composite wall comprises two steel plates, several stiffening components, and reinforcing bars; the two steel plates are distributed relatively at intervals along the thickness direction of the composite wall, and the two steel plates and the steel pipes together form a first cavity; stiffening components are respectively disposed on the inner side of the two steel plates corresponding to the cavity, and the stiffening components separate the first cavity to form multiple closed second cavities; holes are opened on the stiffening components, and the reinforcing bars are inserted into the holes; the second cavities are filled with filling material.

[0010] Furthermore, each of the steel plates is provided with a plurality of stiffening components on its inner side, and the plurality of stiffening components are arranged sequentially along the length direction of the composite wall.

[0011] Furthermore, the stiffening assembly includes two stiffening plates that are joined at one end, and the other ends of the two joined stiffening plates are respectively welded and fixed to the inner side of one of the steel plates; both joined stiffening plates are provided with holes for the reinforcing bars to pass through.

[0012] Furthermore, the surface of the stiffening plate is perpendicular to the surface of the steel plate.

[0013] Furthermore, there are multiple reinforcing bars, which are spaced apart along the height direction of the composite wall.

[0014] Furthermore, each of the steel bars is inserted into a hole in all of the stiffening plates.

[0015] Furthermore, the filling material includes concrete.

[0016] Furthermore, the shear wall includes multiple composite walls and multiple steel pipes; the cross-sectional shape of the shear wall formed by the combination of multiple composite walls and multiple steel pipes is I-shaped, T-shaped, L-shaped or cross-shaped.

[0017] Furthermore, the ends of the reinforcing bars are fixed by hooks, welded anchors, or bolt anchors.

[0018] Furthermore, the wall thickness of the steel pipe is greater than the thickness of the steel plate.

[0019] The beneficial effects of this utility model are:

[0020] Superior mechanical properties: The synergistic effect of the steel bars and stiffening plates transforms the overall buckling of the steel plate into local buckling, enhancing the restraint effect; when the concrete collapses, the stiffening plates delay the out-of-plane instability of the steel plate by tying it up, significantly improving ductility and bearing capacity.

[0021] Convenient construction: Precast components are transported in sections, are small in size and have high rigidity, reducing the risk of deformation and damage; the through-rib design reduces on-site welding, simplifies the process and reduces costs.

[0022] Flexibility and versatility: It can be spliced ​​into various lengths and cross-sectional forms to adapt to different building needs; the steel pipes are the same width as the composite walls, avoiding protruding side columns and optimizing the use of building space. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the prefabricated double-layer steel plate composite shear wall with through-ribs according to this utility model;

[0024] Figure 2 for Figure 1 A top-view structural diagram;

[0025] Figure 3This is a top view of the L-shaped cross-section of the composite shear wall of this utility model;

[0026] Figure 4 This is a top view of the cross-section of the composite shear wall of this utility model, which is cross-shaped.

[0027] Figure 5 This is a force diagram of the combined shear wall with a straight cross-section according to this utility model.

[0028] In the diagram: 1-steel pipe; 2-steel plate; 3-stiffening plate; 4-reinforcing bar. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1-5 The precast double-layer steel plate composite shear wall with through-ribs shown includes the composite wall and steel pipes 1 welded to one or both ends of the composite wall; such as Figure 1 , Figure 2 As shown, steel pipes 1 are installed at both ends of the composite wall, and the cross-sectional shape of the shear wall is straight. Figure 3 As shown, the two composite walls share a single steel pipe 1, and the shear wall composed of the two composite walls and the three steel pipes 1 has an L-shaped cross-section. Figure 4 As shown, one end of each of the four composite walls shares a single steel pipe 1, and the other end of each of the four composite walls is welded with a steel pipe 1, thus forming a cross-shaped shear wall. The opposing surfaces of the steel pipe 1 are flush with the opposing surfaces of the two steel plates 2. The steel pipe 1 serves as a concealed structural column, with the same width as the composite wall, avoiding protruding edge columns and optimizing the use of building space.

[0031] The composite wall comprises two steel plates 2, several stiffening components, and reinforcing bars 4. The two steel plates 2 are spaced apart relative to each other along the thickness direction of the composite wall, and the two steel plates 2 and the steel pipe 1 together form a first cavity. Stiffening components are welded to the inner sides of the corresponding cavities of the two steel plates 2, and the stiffening components separate the first cavity to form multiple closed second cavities. Holes are formed in the stiffening components, and the reinforcing bars 4 are inserted through these holes. The second cavities are filled with a filling material. The second cavities can be filled with ordinary concrete, high-strength concrete, lightweight aggregate concrete, recycled concrete, or self-compacting concrete. Alternatively, the second cavities can be filled with a load-bearing material.

[0032] Multiple stiffening components are welded to the inner side of each steel plate 2, and these components are arranged sequentially along the length of the composite wall. Each stiffening component includes two stiffening plates 3 with one end joined together, and the other ends of these two stiffening plates 3 are welded and fixed to the inner side of one steel plate 2. Both stiffening plates 3 have holes for the insertion of reinforcing bars 4. The surface of the stiffening plate 3 is perpendicular to the surface of the steel plate 2. Multiple reinforcing bars 4 are provided, spaced apart along the height of the composite wall. Each reinforcing bar 4 passes through all the holes in the stiffening plates 3.

[0033] One end of the reinforcing bar 4 can be anchored in the form of a 90° hook, a 135° hook, a welded anchor, a bolt anchor, or without anchoring.

[0034] The wall thickness of steel pipe 1 is greater than the thickness of steel plate 2.

[0035] This invention overcomes the problems of complex construction and high manufacturing cost of traditional double-layer steel plate 2 concrete shear walls. Based on comprehensive consideration of mechanical properties, construction technology, and economic benefits, it proposes a through-reinforced precast double-layer steel plate 2 composite shear wall. Compared to traditional shear walls, the shear wall of this invention, before reaching its bearing capacity, has a strong tethering effect on the steel plate 2 by the through-reinforced stiffening plate 3, which improves the overall buckling of the steel plate 2 into local buckling, enhancing the restraint effect of the steel plate 2 and strengthening the restraint effect of the concrete, thereby increasing the compressive strength of the wall. When the structure reaches its ultimate bearing capacity, the concrete fails and collapses, and the wall expands in the direction perpendicular to the steel plate 2. At this time, the through-reinforced stiffening plate 3 continues to work, delaying the out-of-plane instability of the steel plate 2 through tethering, thus improving the ductility and bearing capacity of the component. This type of composite wall can serve as both a vertical load-bearing component and a lateral force resisting component. (Reference for component local buckling mode and restraint stress) Figure 5 .

[0036] This utility model's composite shear wall features short and compact shear wall segments with a high degree of standardization. Transporting and hoisting these individual segments as units is convenient and quick. The components also exhibit high rigidity, minimizing deformation and damage during transport and hoisting, thus ensuring product quality. The constraint effect of the steel plate 2 on the concrete is altered by changing the number of holes in the stiffening plate 3 and the quantity of reinforcing bars 4, a convenient and easy method. During component fabrication, the steel frame is directly formed through reinforcement threading, a convenient and simple method that reduces welding, saves costs, facilitates standardized production, and ensures high construction quality.

[0037] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A precast double-layer steel plate composite shear wall with through-reinforcement, characterized in that, The system includes a composite wall and steel pipes disposed at one or both ends of the composite wall; the composite wall includes two steel plates, several stiffening components, and reinforcing bars; the two steel plates are distributed at intervals relative to each other along the thickness direction of the composite wall, and the two steel plates and the steel pipes together form a first cavity; stiffening components are respectively disposed on the inner side of the two steel plates corresponding to the cavity, and the stiffening components separate the first cavity to form multiple closed second cavities; holes are opened on the stiffening components, and the reinforcing bars are inserted through the holes; the second cavities are filled with filling material.

2. A precast double-layer steel plate composite shear wall with through-reinforcement as described in claim 1, characterized in that, Each of the steel plates has a plurality of stiffening components on its inner side, and the plurality of stiffening components are arranged sequentially along the length of the composite wall.

3. A precast double-layer steel plate composite shear wall with through-reinforcement as described in claim 2, characterized in that, The stiffening assembly includes two stiffening plates that are attached to each other at one end, and the other ends of the two stiffening plates are respectively welded and fixed to the inner side of one of the steel plates; both stiffening plates are provided with holes for the reinforcing bars to pass through.

4. A precast double-layer steel plate composite shear wall with through-reinforcement as described in claim 3, characterized in that, The stiffening plate is perpendicular to the steel plate.

5. A precast double-layer steel plate composite shear wall with through-reinforcement as described in claim 3, characterized in that, There are multiple reinforcing bars, and the multiple reinforcing bars are spaced apart along the height direction of the composite wall.

6. A precast double-layer steel plate composite shear wall with through-reinforcement as described in claim 5, characterized in that, Each of the aforementioned reinforcing bars is inserted into a hole in all of the aforementioned stiffening plates.

7. A precast double-layer steel plate composite shear wall with through-reinforcement as described in claim 1, characterized in that, The filling material includes concrete.

8. A precast double-layer steel plate composite shear wall with through-reinforcement as described in claim 1, characterized in that, The shear wall includes multiple composite walls and multiple steel pipes; the cross-sectional shape of the shear wall formed by the combination of multiple composite walls and multiple steel pipes is I-shaped, T-shaped, L-shaped or cross-shaped.

9. A precast double-layer steel plate composite shear wall with through-reinforcement as described in claim 1, characterized in that, The ends of the reinforcing bars are fixed by hooks, welded anchors, or bolt anchors.

10. A precast double-layer steel plate composite shear wall with through-reinforcement as described in claim 1, characterized in that, The wall thickness of the steel pipe is greater than the thickness of the steel plate.

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