Investigation On Aseismatic Performance Of Frame-supported Shear Wall Structures With High Transfer Floor

The frame-supported shear wall structures with transfer floors located at different height responses differently to ground motion. The seismic behavior of frame-supported shear wall structures is also dependent on the ratio of stiffness. Furthermore, the structures will come into elastic-plastic phase under major earthquake and the elastic-plastic seismic responses of the structures show great difference comparing with elastic seismic responses.The paper first expounds the structural characteristics,Present situation of research and application of transfer floor, and retrospect and summary of the development of seismic design theory of tall buildings. The elastic time historey analysis of structures with transfer stories located at different height is accomplished and the results are discussed. By changing the ratio of stiffness, this paper sums up the effect of ratio of stiffness on seismic behavior of frame-supported shear wall structure.In the last, a pushover analysis of seismic performance in strong earthquake is completed and the seismic ability and failure of the structure is investigated.The analytical results indicate that the displacement and rotation in any two adjacent stories change greatly along with the changing of the setting locations of transfer floor. And the displacement and rotation of storey cannot be controlled effectively by adjusting the ratio of stiffness. Then, according to the bad influences of high transfer floor to structure, the author raises the concept of'double control'with the ratio of lateral stiffness and storey drift to eliminate disadvantages using one target through analysis, contrast and research.Combined with practical project, parameters of'double control'are presented at the same time, which can be referred in the Theoretic Investigation and design of engineering.