利用累积损伤模型分析场地地震响应的动力可靠性

Study on Random Dynamic Reliability of Site Seismic Response

本文将地震作用由随机场简化为随机过程，针对软土地基的动力特征，结合可靠度理论与随机振动理论，运用累积损伤模型对场地非确定的地震响应进行了动力可靠性分析。

Earthquake effect is simplified to be a stochastic process in stead of being a random field effect in this paper. We presumed that the damage of soil material under the stochastic load is an accumulated effect caused by loads at different levels and that the damage probability of the field is the sum of the one of many soil elements. With reliability theory and stochastic vibration theory, we put forward a dynamic relaiability analysis method and then analyze the undetermined earthquake effect on the field, using an accumulated damage model.