ABSTRACT

A simplified framework is proposed in this study to assess the seismic fragility curves of reinforced concrete (RC) columns under different failure patterns in a unified manner. Within this framework, RC columns are simulated by an equivalent single-degree-of-freedom system, where a quasi-static experimental database is compiled to calibrate the seismic demand model and identify the limit state capacity. By comparing the seismic demand model with the limit state capacity, the seismic fragility curves of RC columns under different failure patterns are generated accordingly. Finally, empirical equations are proposed to predict the seismic fragility parameters for engineering applications.

摘要

本研究提出了一个简化的框架，以统一的方式评估钢筋混凝土（RC）柱在不同破坏模式下的地震脆性曲线。在此框架内，RC柱采用等效单自由度系统进行模拟，编制准静态实验数据库，对地震需求模型进行标定，确定极限状态容量。通过将抗震需求模型与极限状态承载力进行对比，生成不同破坏模式下RC柱的抗震脆性曲线。最后，提出经验方程来预测工程应用中的地震脆弱性参数。