ABSTRACT

Recent earthquakes have exposed the vulnerability of buildings in Indonesia. An evaluation is needed to confirm the seismic performance of the structures. A seismic index is a method to determine building performance. This research aims to evaluate the performance using a dynamic seismic performance index _dI_s by considering Indonesia’s seismic hazard. The nonlinear incremental dynamic analysis with a bilinear hysteretic model was used in the analysis. The estimation method using the equivalent linearization and using the characteristic displacement response is proposed to estimate a dynamic ductility index _dF. The dynamic seismic performance index tends to increase with an increase in the critical ductility factor. The dynamic ductility index _dF represents a modification factor (R) that also increases with an increase in the critical ductility. The accuracy of the equivalent linearization is more accurate in the lower period, but the characteristic displacement method gives the closest estimate in the higher period.

摘要

最近的地震暴露了印度尼西亚建筑物的脆弱性。需要进行评估以确认结构的抗震性能。抗震指数是一种确定建筑性能的方法。本研究旨在通过考虑印度尼西亚的地震灾害，使用动态抗震性能指数_d I _{s来评估性能。}在分析中使用了具有双线性滞后模型的非线性增量动态分析。提出了使用等效线性化和使用特征位移响应的估计方法来估计动态延性指数_d F。动态抗震性能指标往往随着临界延性因子的增加而增加。动态延性指数_d F表示修正因子 ( R )，它也随着临界延展性的增加而增加。等效线性化的精度在较低周期内更准确，但特征位移法在较高周期内给出最接近的估计。