Progressive failure processes of reinforced slopes based on general particle dynamic method

作     者：赵毅 周小平 钱七虎 ZHAO Yi;ZHOU Xiao-ping;QIAN Qi-hu

作者机构：State Key Laboratory of Coal Mine Disaster Dynamics and Control (Chongqing University) School of Civil Engineering Chongqing University Key Laboratory of New Technology for Construction of Cities in Mountain Area of Ministry of Education(Chongqing University) Engineering Institute of Engineering Crops PLA University of Science and Technology 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2015年第22卷第10期

页      面：4049-4055页

核心收录：

学科分类：0810[工学-信息与通信工程] 0806[工学-冶金工程] 08[工学] 080104[工学-工程力学] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Projects(51325903,51279218)supported by the National Natural Science Foundation of China Project(cstc2013kjrcljrccj0001)supported by the Natural Science Foundation Project of CQ CSTC,China Project(20130191110037)supported by Research fund by the Doctoral Program of Higher Education of China 

主　　题：general particle dynamic algorithm(GPD) slope stability progressive failure process geomaterial-structure interaction 

摘      要：In order to resolve grid distortions in finite element method(FEM), the meshless numerical method which is called general particle dynamics(GPD) was presented to simulate the large deformation and failure of geomaterials. The Mohr-Coulomb strength criterion was implemented into the code to describe the elasto-brittle behaviours of geomaterials while the solid-structure(reinforcing pile) interaction was simulated as an elasto-brittle material. The Weibull statistical approach was applied to describing the heterogeneity of geomaterials. As an application of general particle dynamics to slopes, the interaction between the slopes and the reinforcing pile was modelled. The contact between the geomaterials and the reinforcing pile was modelled by using the coupling condition associated with a Lennard-Jones repulsive force. The safety factor, corresponding to the minimum shear strength reduction factor R, was obtained, and the slip surface of the slope was determined. The numerical results are in good agreement with those obtained from limit equilibrium method and finite element method. It indicates that the proposed geomaterial-structure interaction algorithm works well in the GPD framework.