| With the development of human society, high-rise building is becoming the main form of urban architecture as more and more people are gathering in cities. China is a multi-seismic country, and the development of high-rise buildings in seismic region is limited. In order to be closer to the practice and give some suggestions to structure design, we should take account the interaction of structure and soil during the seismic design and performance analysis.A finite element elasto-plastic time-history analysis was conducted on the interaction system of soil-structure of frame-supported shear wall. The main works and results are listed as following:1ã€The basic points of modeling are summarized comprehensively and detailed, such as model selection, simplification, basic assumption parameters determination and influencing factors, et al.2ã€Analysis was made on seismic response of Soil-Structure Interaction System(SSI). The results shown that, the natural period of vibration mode increased approxomately30%, and the large inter-story drift angle of structure occurred in middle-upper part. The maximum shear force of columns appeared in the middle columns on transfer story. So, when designing, columns should be particularly strengthened, and some measures should be taken to decrease the story drift in middle-upper part of structure.3ã€The influence on the location of transfer story on SSI seismic responses was analyzed. The various levels of the transfer stories had little effect on the periods. With the location of transfer story increased, the maximum displacement and acceleration appeared slightly ahead. The inter-story drift angle, stiffness and shear forces near the transfer storey changed severely. The higher the level of transfer stories, the more severe it changed. The suggestion is that the height of transfer story can be set a little higher properly but not more than5layer. The ratio of equivalent lateral stiffness should be ranged between0.8and1.3. |
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