Strength softening models of soil and its application in rainfall-induced landslide simulation

作     者：Zhendong Fu Jiachun Li 

作者机构：Key Laboratory for Mechanics in Fluid Solid Coupling Systems Institute of Mechanics Chinese Academy of Sciences 

出 版 物：《Theoretical & Applied Mechanics Letters》 (力学快报（英文版）)

年 卷 期：2013年第3卷第4期

页      面：23-28页

学科分类：081803[工学-地质工程] 081401[工学-岩土工程] 08[工学] 0818[工学-地质资源与地质工程] 0814[工学-土木工程] 

基　　金：supported by the National Natural Science Funds of China (10932012) 

主　　题：homogeneous slope numerical simulation strength softening model rainfall-induced landslide geological disaster 

摘      要：In this study, strength softening models are developed for exploring rainfall-induced landslide mechanism based on Mohr Coulomb strength theory with both saturation degree and temporal evolution into consideration. According to the ratio of two time scales available, the model can be classified into three categories, i.e., instant softening model, delay softening model, and coupling softening model. Corresponding evolution functions are specified to represent these kinds of softening processes and then applied to simulate landslide of homogeneous slopes triggered by rainfall, therefrom, useful conclusions can be drawn in the end.