Translated Title
Seismic fragility analysis of mega-sub controlled system based on response surface method
Translated Abstract
A response surface method-based fragility analysis method of mega-sub controlled system is proposed.Four ultimate damage state for mega-sub controlled system are defined, and based on which, a method for solving the limit values of the four performance levels is put forward.Considering the uncertainties of ground motions characteristics and structures parameters, this paper proposes a fragility analysis method of mega-sub controlled system based on RSM(response surface method).Using central composite design method to construct a series of samples for various ground motions and mega-sub controlled structures, nonlinear dynamic time analysis of the sample model was carried out by SAP2000, and substructures response surface model of mega-sub controlled structure were built, then the fragility curves were obtained using of Monte Carlo method, and the damaging probability of mega-sub controlled structure are given, provides the basis for damage assessment, and is of great engineering application prospects.
Translated Keyword
response surface method (RSM)
mega-sub controlled system
Monte Carlo method
fragility analysis
central composite design method
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