NUMERICAL SIMULATION FOR A LANDSLIDE DUE TO STRENGTH DEGRADATION OF WEATHERED ROCK INDUCED BY CYCLIC SHEARING DURING EARTHQUAKE

摘要：

An analytical method is developed to predict a landslide induced by strong earthquake. In this study, a numerical simulation for one dip slope landslide occurred during 2004 Mid Niigata Prefecture Earthquake in Japan is conducted. First of all, utilizing measurements of ground investigation and laboratory tests, the mechanical properties of the slip surface is investigated to develop an appropriate constitutive model used in the analysis. The simulation is based on the 2-D dynamic elasto-plastic FEM with total stress formulations. A strain-softening behavior of weathered rock is taken into account, which is important to simulate such a catastrophic failure. As a result, the observed phenomena can be simulated by the analysis, and the proposed method is found be very effective.

关键词： Slope Earthquake Collapse Dynamic FEM Strain-softening

作者: A. Wakai K. Ugai A.Onoue S. Kuroda K. Higuchi

作者单位: Associate Professor, Dept. of Civil & Environ. Engrg. ,Gunma University, Gunma, Japan Professor, Dept. of Civil & Environ. Engrg. ,Gunma University, Gunma, Japan Professor, Dept. Civil & Environ. Engrg., Nagaoka National Coll. of Technology, Niigata, Japan National Institute for Rural Engineering, Ibaraki, Japan Kuroiwa Survey and Design Office Co.,Ltd., Gunma, Japan

会议类型: 国际会议

会议名称: 14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）