THEORETICAL MODEL AND NUMERICAL ANALYSIS ON UNSATURATED EXPANSIVE SOIL SLOPE DURING DIGGING AND CLIMATE CHANGE COURSES (Ⅱ) NUMERICAL ANALYSIS

摘要：

In order to investigate the sliding mechanism and process of expansive soil slope during digging and raining-evaporating courses,a FEM program named UESEPDC was designed based on the elasticity-plasticity-damage constitutive model and the elasticity-plasticity-damage consolidation model of unsaturated expansive soil proposed by the authors,and the numerical analysis on solid-liquid-gas tri-phases and multi-field couple problem was conducted for four stages: 1) Raining and evaporating before digging; 2) The moment at digging finishing; 3) Three days after digging finishing; 4) Multi-raining-evaporating cycles.The fields of stress,displacement,pore water pressure,pore air pressure,water content and suction in an expansive soil slope were obtained,and the pictures of crack damage evolution and plastic zone development in the same expansive soil slope for each analysis stage were shown.The research results clearly reveal the mechanism of expansive soil slope sliding progressively.This work has been funded by the National Natural Science Foundation of China (10372115).

关键词： unsaturated soil expansive soil slope digging raining evaporating damage numerical analysis

作者: Z.H.Chen X.W.Fang J.F.Guo Z.H.Lu B.Qin

作者单位: Logistic Engineering University,Chongqing 400041,China Logistic Engineering University,Chongqing400041,China Navy University of Engineering,Wuhan 430033,China

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1406

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）