Elastic-Plastic Dynamic Analysis Of High-rise Frame-Shear Wall Structures

Frame and shear wall are arranged in frame-shear wall structures at the same time. Frame and shear wall can bear the vertical and horizontal load together. Because the rigidity of resistance to lateral displacement is small in frame structures, the lateral deformation is large. Appropriate shear walls, which are arranged in frame structure, can effectively make up the shortage of resist lateral rigidity. Because the shear walls are arranged in local position, it can not only meet the using requirements of different functions of buildings easily, but also make the whole structure has enough resist lateral stiffness and strong anti-seismic ability. From the theory and designing, frame-shear wall structure is a very reasonable structure. Therefore it should use frame-shear wall structure instead of pure frame structure preferentially in seismic designing of high-rise buildings.Under seldom occurred earthquake, the structure will transform into Elastic-Plastic state, the stiffness will be change, and the plastic stress will be redistributed too. Elastic-plastic dynamic analysis is an important tool for performance-based design, it can analyze the structure response in the elastic-plastic state and find the weakness of the structure.As a research object, a high-rise frame-shear wall structure is studied in the paper. The elastic static analysis under the action of frequently occurred earthquake and the elastic-plastic dynamic time-procedure analysis under seldom occurred earthquake are studied. The main research work can be divided to five aspects as following:(1)The systems of high-rise structures, the main structure form and the calculation analysis method of frame-shear wall structures in domestic and overseas are discussed and summarized in this paper.(2)The elasto-plastic dynamic analysis method and elastic-plastic dynamic analysis software are introduced.(3) The elastic static analysis of a high-rise frame-shear wall structure under the action of frequently occurred earthquake is studied. The internal force and deformation are calculated and analyzed (4) The elastic-plastic dynamic time-procedure analysis of the high-rise frame-shear wall structure under seldom occurred earthquake are studied.(5)The results of elastic static analysis under the action of frequently occurred earthquake and elastic-plastic dynamic time-procedure analysis under seldom occurred earthquake are analyzed comparatively.Some problems need further investigations were put up at the end of the paper.