Study on Stochastic Seismic Response and Dynamic Reliability Considering Uncertain Structural Parameters of Non-linear Earth-Retaining Wall

摘要：

A simple numerical deterministic approach for evaluating stochastic properties and reliabilities of structural systems with uncertain parameters under random seismic excitations (double-random problem) is presented. The method is based on the impulse response function method, the perturbation law and random central differential law. On the other hand, the equivalent linear model is used to account for the nonlinearity of soil. On the basis of the proposed method, the random seismic response and dynamic reliability of earth-retainm g wall are all analyzed. We can see that considering the nonlinearity of foundation and backfill soil material, the mean square roots response of horizontal displacement has larger increase. The maximum value response including the displacement, moment and resultant force will increase with the heighten of reliability index, and the aseismic design by linear model will result risk than non-linear model. The simulation analysis verifies that the proposed method is applicable to the reliability analysis of uncertain nonlinear structural system under the random seismic excitations, which provides a practical way for analyzing the dynamic reliability of other geotochnical engineering structures.

关键词： earth-retaimng wall stochastic seismic response dynamic reliability double-random problem non-linear

作者: LI Zhiqiang ZHANG Hongru

作者单位: Research Center for Environment Protection and Transportation Safety,China Academy of Transportation School of Civil Engineering and Architecture,Beijing Jiaotong University,Beijing 100044,China

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 2123-2128

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）