CN103883025B - Assembling type combination steel plate shear wall - Google Patents

Abstract

The invention relates to an assembled composite steel plate shear wall, which belongs to the technical field of structural engineering; the assembled composite steel plate shear wall consists of embedded steel plates, concrete plates, vertical edge members, horizontal edge members, high-strength bolts, and L-shaped connecting plates , frame columns and frame beams; the embedded steel plates are made of thin steel plates; the concrete slabs are made of prefabricated concrete slabs; the vertical edge members and horizontal edge members are made of T-shaped steel; the L-shaped connecting plates are steel plates with bolt holes; The embedded steel plate is connected with the vertical edge member and the horizontal edge member; the horizontal edge member is connected with the frame beam; the vertical edge member and the horizontal edge member are connected through an L-shaped connecting plate; and the frame beam is connected with the frame column. The prefabricated combined steel plate shear wall provided by the present invention is a new type of anti-lateral force member for high-rise building structures or other structures. Energy-consuming components.

Description

A prefabricated combined steel plate shear wall

technical field

The invention relates to a novel assembled composite steel plate shear wall, which belongs to the technical field of structural engineering.

Background technique

At present, there are more than 20 buildings in the world that use steel plate shear walls as the main anti-lateral force components, and they are mainly distributed in areas with high seismic intensity such as North America and Japan. Since Japan Steel Corporation applied steel plate shear walls to buildings in 1970, the steel plate shear walls have been developed for more than 40 years. The steel plate shear wall structural system consists of embedded steel plates and edge members, and the edge members include edge beams and edge columns. Embedded steel plates are usually connected with edge members to form a lateral force resistant structural system, which can be regarded as a cantilever beam fixed on the ground.

According to the thickness of the embedded steel plate, the steel plate shear wall can be divided into thick steel plate shear wall and thin steel plate shear wall; according to whether the steel plate surface is ribbed, the steel plate shear wall can be divided into stiffened steel plate shear wall and non-stiffened rib Steel plate shear wall; according to whether the steel plate surface is slit, the steel plate shear wall can be divided into slit steel plate shear wall and non-slit steel plate shear wall; according to whether the steel plate side is arranged with concrete slab, the steel plate shear wall can be divided into steel plate shear wall - Concrete composite shear walls and ordinary steel plate shear walls. Although the thin steel plate shear wall has good economic benefits, it is more prone to buckling. Most other forms of steel plate shear walls aim to prevent the out-of-plane deformation of the steel plate, and keep the steel plate working in the plane as much as possible to consume more energy.

According to Appendix IV of my country's "Technical Regulations for Steel Structures in High-Rise Civil Buildings" (JGJ99-98), in order to prevent shear buckling of steel plate shear walls, the shear buckling capacity of the steel plate should be used as its ultimate bearing capacity, or through the steel plate shear wall. Buckling does not occur until it is stiffened to yield. In fact, the above two methods are conservative and costly, which is not conducive to the development and application of steel plate shear walls. With the in-depth research on steel plate shear walls at home and abroad, the performance of steel plate shear walls after buckling has been widely concerned. After buckling, steel plate shear walls still have high bearing capacity, good ductility and stable energy dissipation. ability. Making full use of the post-buckling strength of the steel plate shear wall can not only obtain good seismic performance of the structure, but also significantly reduce the amount of steel used, reduce the cost, and improve economic benefits.

Contents of the invention

The present invention proposes a new type of prefabricated combined steel plate shear wall, the purpose of which is to overcome the shortcomings of the thin steel plate shear wall that cannot give full play to the strength and ductility of steel due to premature buckling, and improve the plane of the steel plate shear wall The external stability and ultimate bearing capacity give full play to the advantages of steel, and this new type of assembled composite steel plate shear wall can be processed in the factory, transported to the site and connected with the frame beam by bolts, avoiding wet work and welding, and can realize industrialization and Modularization reduces construction period and saves cost.

In the traditional thin steel plate shear wall, when the load acts in one direction, the embedded steel plate buckles and forms a tension band, accompanied by a large out-of-plane deformation; when the external load acts in the opposite direction, the original tension band will reverse Compression will no longer provide stiffness; at the same time, the original compression area will transition into a tension zone, but due to a large buckling deformation under the upper load, there is a process of deformation being stretched to "flat". Until the formation of the reverse tension band. In this process, the steel plate cannot bear the load, and the structure only relies on the beams and columns to bear the external load. In this way, the tension field anchored on the frame will generate a large additional bending moment on the side columns, which increases the stability of the columns. As the vertical load-bearing components of the building, the pillars, if damaged, may lead to the collapse of the entire structure. In addition, a defect of the traditional steel plate shear wall is that it is impossible to make holes in the steel plate wall. In this way, the steel plate wall cannot be used as the lateral force-resisting member in the place where the opening needs to be opened in the building, thus greatly reducing the The scope of application of the steel plate wall as a new type of component. In this new prefabricated composite steel plate shear wall, external concrete slabs are hung on both sides of the shear wall, and edge members are arranged around it. In this way, on the one hand, the large out-of-plane deformation after buckling of the embedded steel plates is limited, and lateral constraints are provided; on the other hand, On the one hand, when the load is reversed, the concrete slab and edge members can withstand the external load and avoid increasing the burden of the column. The steel plate outsourcing concrete wall panel can play the role of fire prevention, heat preservation, sound insulation, etc., which reduces the follow-up workload and reduces the project cost. Moreover, this new type of prefabricated combined steel plate shear wall avoids the defect that the traditional steel plate shear wall cannot open holes, so it can be well used as a lateral force resistant component in multi-story steel structures.

The prefabricated composite steel plate shear wall proposed by the present invention is characterized in that the prefabricated composite steel plate shear wall is composed of embedded steel plates, concrete slabs, vertical edge members, horizontal edge members, high-strength bolts, L-shaped connecting plates, frames Composed of columns and frame beams; the embedded steel plates are thin steel plates; the concrete slabs are prefabricated concrete slabs; the vertical edge members and horizontal edge members are T frames; the L-shaped connecting plates are steel plates with bolt holes The embedded steel plate is connected with the vertical edge member and the horizontal edge member; the horizontal edge member is connected with the frame beam; the vertical edge member and the horizontal edge member are connected through an L-shaped connecting plate. The frame beams are connected to the frame columns.

In the above-mentioned prefabricated combined steel plate shear wall, the embedded steel plate adopts low yield point high ductility steel or high strength high ductility steel. And it is cut at four corners to facilitate the connection between edge members.

In the above prefabricated composite steel plate shear wall, the concrete slab is hung on both sides of the embedded steel plate by using a prefabricated concrete slab, and connected with it by common bolts.

In the above-mentioned prefabricated combined steel plate shear wall, the connection between the embedded steel plate and the vertical edge members and horizontal edge members is divided into two types, one is to weld all the edge members, and the other is to connect with edge members with bolts, and This whole is processed in the factory.

In the above prefabricated combined shear wall, the vertical edge members and the horizontal edge members are connected by bolts of L-shaped connecting plates.

In the above prefabricated composite shear wall, the high-strength bolts are arranged symmetrically on the flange of the frame beam.

In the above prefabricated composite shear wall, the horizontal edge member and the frame beam are connected by high-strength bolts on site.

In the above prefabricated composite shear wall, the frame beams are welded or bolted or bolted to the frame columns.

The invention can effectively limit the out-of-plane deformation of the steel plate wall by arranging concrete plates on both sides of the traditional thin steel plate shear wall, and improve the lateral stiffness, energy consumption and ductility of the steel plate wall. In addition, the steel plate shear wall is only connected with the frame beam, so as to avoid increasing the burden of the structural column. All components of the invention can be processed in a factory and then assembled on a construction site, the construction is simple, the cost is reduced, and the invention is suitable for fabricated steel structures.

The assembled combined steel plate shear wall provided by the invention is a new type of lateral force-resisting component of a high-rise building steel structure or other structures.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the assembled composite steel plate shear wall of the present invention.

Fig. 2 is an exploded view of the assembled composite steel plate shear wall unit of the present invention.

In the figure: 1—embedded steel plate, 2—concrete slab, 3—vertical edge member, 4—horizontal edge member, 5—high strength bolt, 6—L-shaped connecting steel plate, 7—frame column, 8—frame beam.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings.

The prefabricated combined steel plate shear wall is composed of embedded steel plates 1, concrete slabs 2, vertical edge members 3, horizontal edge members 4, high-strength bolts 5, L-shaped connecting plates 6, frame columns 7 and frame beams 8; The embedded steel plate 1 adopts a thin steel plate; the concrete slab 2 adopts a prefabricated concrete slab; the vertical edge member 3 and the horizontal edge member 4 adopt a T frame; the L-shaped connecting plate 6 is a steel plate with bolt holes; The embedded steel plate 1 is connected to the vertical edge member 3 and the horizontal edge member 4; the horizontal edge member 4 is connected to the frame beam 8; the vertical edge member 3 and the horizontal edge member 4 are connected through an L-shaped connecting plate 6. The frame beam 8 is connected with the frame column 7 .

In the above prefabricated combined steel plate shear wall, the embedded steel plate 1 is made of low yield point high ductility steel or high strength high ductility steel. And it is cut at four corners to facilitate the connection between edge members. The concrete slab 2 is hung on both sides of the embedded steel plate 1 by using a prefabricated concrete slab, and is connected with it by ordinary bolts. The connection between the embedded steel plate 1 and the vertical edge member 3 and the horizontal edge member 4 is divided into two types, one is to weld all the edge members, and the other is to connect the edge members with bolts, and the whole process is completed in the factory. The vertical edge member 3 and the horizontal edge member 4 are bolted through an L-shaped connecting plate 6 . The high-strength bolts 5 are arranged symmetrically on the flange of the frame beam 8 . The horizontal edge member 4 is connected to the frame beam 8 by high-strength bolts 5 on site. The frame beam 8 is welded or bolted or bolted to the frame column 7 .

The above-mentioned prefabricated composite steel plate shear wall is constrained by the concrete plates on both sides, and has a large out-of-plane stiffness, which can effectively control the out-of-plane deformation during transportation, installation and use, and maintain the stability and safety of the steel plate.

The assembled combined steel plate shear wall proposed by the invention is an improvement to the traditional flat steel plate shear wall, which improves the defect that the traditional steel plate shear wall is easy to buckle, and improves the lateral resistance of the steel plate shear wall. All the components of the present invention can be processed and installed in the factory, and then transported to the construction site for assembly, which saves manpower and material resources and reduces the cost.

Claims (4)

1. a prefabricated combined steel plate shear wall is characterized in that: said prefabricated combined steel plate shear wall consists of embedded steel plates (1), concrete slabs (2), vertical edge members (3), horizontal edge members ( 4), high-strength bolts (5), L-shaped connecting plates (6), frame columns (7) and frame beams (8); the embedded steel plate (1) adopts thin steel plate; the concrete plate (2) adopts A prefabricated concrete slab; the vertical edge member (3) and the horizontal edge member (4) adopt a T frame; the L-shaped connecting plate (6) is a steel plate with bolt holes; the embedded steel plate (1) and the vertical The edge member (3) is connected to the horizontal edge member (4); the horizontal edge member (4) is connected to the frame beam (8); the vertical edge member (3) and the horizontal edge member (4) are connected by an L shape The plate (6) is connected; the frame beam (8) is connected with the frame column (7); The embedded steel plate (1) adopts low-yield-point high-ductility steel or high-strength high-ductility steel, and is cut at four corners to facilitate connection between edge members; The concrete slab (2) is hung on both sides of the embedded steel plate (1) by using a prefabricated concrete slab, and is connected with it by ordinary bolts; The connection between the embedded steel plate (1) and the vertical edge member (3) and the horizontal edge member (4) is divided into two types, one is all welded with the edge member, the other is bolted with the edge member, and the whole Finished in the factory; The vertical edge member (3) and the horizontal edge member (4) are bolted through an L-shaped connecting plate (6). 2. A prefabricated combined steel plate shear wall according to claim 1, characterized in that the high-strength bolts (5) are arranged symmetrically on the flange of the frame beam (8). 3. A prefabricated combined steel plate shear wall according to claim 1, characterized in that the horizontal edge member (4) and the frame beam (8) are connected on site by high-strength bolts (5). 4. A prefabricated combined steel plate shear wall according to claim 1, characterized in that: the frame beam (8) is welded or bolted or bolted to the frame column (7).