论文部分内容阅读
土工结构在地震荷载下的滑动位移是评估结构安全性能的重要参数。采用一种新型的地震波选择方法,在强震数据库中选择修改地震波,以有效地在结构动力分析中引入不同特征地震波的影响。通过一个简单的土工结构地震滑移模型,系统地分析了结构基本周期和滑动面屈服系数对地震滑移概率及相应滑移距离的影响,并提出了滑动体在不同地震场景和基本周期条件下的滑移概率和累积滑动位移的统计模型,对基于性能的土工结构抗震设计具有重要的参考意义。
The sliding displacement of geotechnical structure under earthquake load is an important parameter to evaluate the structural safety performance. A new type of seismic wave selection method is adopted to select the seismic wave in the strong earthquake database to effectively introduce the influence of different characteristic seismic waves into the structural dynamic analysis. Through a simple seismic slip model of geotechnical structure, the influence of basic structure periodicity and slip surface yield coefficient on earthquake slip probability and corresponding slip distance is systematically analyzed. The results show that under different seismic scenarios and basic period conditions The statistical model of slip probability and cumulative sliding displacement is of great importance to the performance-based seismic design of geotechnical structures.