Seismic fragility analysis of Inter-story isolation structures based on response surface method
Zhang Shangrong1,2, Tan Ping3, Du Yongfeng1,2, Zhou Fulin3, Zhao Lijie1,2
1.Institute of Earthquake Protection and Disaster Mitigation, Lanzhou Univ. of Tech, Lanzhou 730050, China; 2. Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou Univ. of Tech, Lanzhou 730050, China; 3. Earthquake Engineering Research and Test Center of Guangzhou University, Guangzhou 510405, China
Abstract：Considering the uncertainties of ground motions characteristics and structures parameters, this paper proposes a fragility analysis method of inter-story isolation structures based on RSM(response surface method). Using central composite design method to construct a series of samples for various ground motions and inter-story isolation structures, nonlinear dynamic time analysis of the sample model was carried out, and then substructures response surface model of inter-story isolation structure was built. Results shows the proposed method possesses less amount of calculation, high accuracy, effectively improve the efficiency of vulnerability analysis, and is of great engineering application prospects.
2014, Vol. 33 
