Upper Bound Solution of Soil Slope Stability under Coupling Effect of Rainfall and Earthquake

作     者：尹小军 王兰民 YIN Xiaojun;WANG Lanmin

作者机构：Institute of Engineering MechanicsChina Earthquake AdministrationHarbin 150080China Key Laboratory of Earthquake Engineering and Engineering VibrationChina Earthquake AdministrationHarbin 150080China College of Mining EngineeringHeilongjiang University of Science and TechnologyHarbin 150022China Lanzhou Institute of SeismologyChina Earthquake AdministrationLanzhou 730000China 

出 版 物：《Journal of Donghua University(English Edition)》 (东华大学学报（英文版）)

年 卷 期：2019年第36卷第4期

页      面：357-363页

学科分类：08[工学] 081401[工学-岩土工程] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0814[工学-土木工程] 0811[工学-控制科学与工程] 

基　　金：National Natural Science Foundation of China(No.51478444) 

主　　题：soil slope coupling effect upper bound solution stability ratio earthquake rainfall 

摘      要：Based on the limit analysis upper bound method,a new model of soil slope collapse has been proposed which consists of two rigid block zones and a plastic shear zone.Soil slope was induced failure by coupling effect of rainfall and earthquake,and these blocks were also incorporated horizontal earthquake force and vertical gravitate.The velocities and forces were analyzed in three blocks,and the expression of velocity discontinuities was obtained by the principle of incompressibility.The external force work for the blocks,the internal energy of the plastic shear zone and the velocity discontinuous were solved.The present stability ratios are compared to the prevenient research,which shows the superiority of the mechanism and rationality of the analysis.The critical height of the soil slope can provide theoretical basis for slope support and design.