Abstract
In order to understand the seismic damage characteristics and seismic performance of buildings with bottom frame seismic wall, the seismic damage characteristics analysis and nonlinear model regression are carried out for 2 178 Dujiangyan buildings after the Wenchuan earthquake by using the macro seismic damage assessment and numerical analysis. The results show that the vulnerable parts of the bottom frame seismic wall buildings are the bottom frame and floor, the transition layer, the bottom node and the anti-seismic wall. The nonlinear function and curve model of this kind of structure under different intensity levels are established. The model can provide reference for seismic design of structures and revision of seismic intensity standards.
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