【摘要】 提出一种基于响应面法的巨-子结构控制体系的地震易损性分析方法。定义巨-子结构控制体系的4个极限状态,提出基于巨-子结构控制体系极限破坏状态确定结构抗震性能水平限值的方法。通过考虑地震动和结构物理参数不确定性,以中心复合设计方法建立地震动-巨-子结构控制体系的样本模型。采用SAP2000对系统的样本模型进行非线性动力时程分析,并分别建立巨-子结构控制体系中主结构、子结构以及隔震层的响应面模型,在此基础上采用蒙特卡洛模拟获得巨-子结构控制体系的易损性曲线,给出巨-子结构控制体系的破坏概率,从而为地震灾害的巨-子结构控制体系损伤评估提供依据,具有较大的工程应用前景。更多还原

【Abstract】 A response surface method-based fragility analysis method of mega-sub controlled system is proposed. Four ultimate damage state for mega-sub controlled syste m 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.更多还原