两边连接钢板剪力墙结构性能分析
[Abstract]:The structural characteristics of the steel plate shear wall connected on both sides are that the embedded steel plate is only connected to the frame beam. Compared with the steel plate wall connected with the four sides, this kind of structural feature eliminates the adverse effect of the additional moment and axial force on the column caused by the steel plate embedded in the four sides. When the frame column is composed of concrete-filled steel tubular column and steel reinforced concrete column, the construction difficulty of the connection between the inlaid steel plate and the frame column can be solved by adopting the method of connecting the steel plate with the two sides of the steel plate. In addition, in the seismic reinforcement of the old building, it is more convenient to use the embedded steel plate connected both sides. In this paper, a design method based on the load-carrying capacity of steel plate shear wall is put forward, and the correctness of the design method is verified by the design example and finite element simulation analysis. On this basis, nine different layers are designed. The finite element model of steel plate shear wall structure with different span is established by Abaqus software, and the influence of story number and span on the structure performance is studied. Finally, a steel frame-steel plate wall structure is designed. The time-history analysis of small earthquake, moderate earthquake and large earthquake is carried out to investigate the deformation of the structure, the distribution of the base shear force and the failure mechanism. The above results show that the smaller the span of steel plate, the greater the thickness of steel plate, which leads to the increase of the size of edge member, which makes the model still have larger bearing capacity after the yield of steel plate, and the stiffness decreases slowly. However, the shear resistance of embedded steel plate is inadequate, the distribution of base shear force is relatively small, in addition, the axial force of frame column will increase; the more layers, the smaller the span, the more obvious the bending action of the model is, which leads to the steel plate of the upper part of the structure is not easy to yield. It also makes the structure uneconomical. The steel plate connected with both sides in the frame structure can significantly improve the stiffness of the structure and reduce the deformation of the structure. Reasonably designed steel frame-Shear wall structures with steel plates connected on both sides remain elastic under small earthquakes; steel plates yield under moderate earthquake, and frame edges remain elastic; under strong earthquakes, steel plates yield, and beam ends and column feet enter into plasticity. Accord with the performance target of seismic design of structure.
【学位授予单位】:广州大学
【学位级别】:硕士
【学位授予年份】:2017
【分类号】:TU973.16
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