【摘要】 提出一种基于性能的层间隔震结构地震易损性分析方法。定义了层间隔震结构的四个极限状态,提出基于层间隔震结构极限破坏状态确定结构抗震性能水平限值的方法。通过考虑近场与远场地震动的不确定性,采用增量动力分析(IDA)对比分析了一传统抗震结构和相应层间隔震结构在近、远场地震作用下的概率地震需求危险性及基于性能的地震易损性,分别得到传统抗震结构和相应层间隔震结构的地震危险性曲线和易损性曲线,给出层间隔震结构的破坏概率,探讨了层间隔震结构的破坏模式和破坏规律,为受地震灾害的层间隔震结构损伤评估提供依据。更多还原

【Abstract】 A performance-based vulnerability analysis method of inter-story isolation structures is proposed. Four ultimate damage states for inter-story structures are defined,and also a method based on limit damage status is put forward to determine the limit values of structure seismic performance level. By considering the uncertainties of near-field and far-field ground motions characteristics,the probabilistic seismic hazard and performance-based seismic vulnerability between the traditional anti-seismic structure and inter-story isolation structure under near-field and far-field earthquake are analysed by using the results of incremental dynamic analysis( IDA). Seismic hazard curves and vulnerability curves of the traditional anti-seismic structure and inter-story isolation structure are obtained respectively,the damaging probability of the traditional anti-seismic structure is given,and also failure mode and rule of inter-story structures are discussed,all of which provide the basis for damage assessment to inter-story structures affected by earthquake.更多还原