Abstract
A processing method of shear wall core with high-level story isolation technology（PMIT）is proposed, which the principle, configuration, characteristics are illustrated. The problem in the isolation story that the core shear wall need break could be overcome to use the new method. With the use of ETABS software, the PMIT models of setup the viscous damper or elastic spring, no damper and elastic spring in the pre-fixed gap between the core shear wall and the around upper structure , the model of suspension method and frame-support shear wall structure model are built, nonlinear time history analysis under frequently occurred earthquake are conducted. The results show that: (1) comparing with frame-support shear wall structure, the story drift of substructure of isolation story is reduced with PMIT, however, it increased by 150% with suspension method. The structural seismic performance with PMIT is not influenced. (2)comparing with the structure with suspension method, the tension force of the lateral isolator in isolation story decreased by 50% only during the horizontal earthquake action to add the viscous damper in the pre-fixed gap, the overturning resistance performance could be obviously improved.
Key words
isolation /
the core shear wall /
elastic spring /
viscous damper
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WU Cong-xiao;ZHOU Yun;WU Congyong;DENG xue-song .
Study on the processing method of core shear wall with high-level story isolation technology[J]. Journal of Vibration and Shock, 2011, 30(10): 77-81
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