Analysis of cylindrical cavity expansion with linear softening behavior based on extended SMP criterion

被引：0

作者：

Hao, Dong-Xue ^{[1
,2
]}

Luan, Mao-Tian ^{[1
]}

Chen, Rong ^{[1
]}

Wu, Ke ^{[3
,4
]}

机构：

[1] State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China

[2] School of Architecture Engineering, Northeast Dianli University, Jilin 132012, China

[3] Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China

[4] Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China

来源：

Dalian Ligong Daxue Xuebao/Journal of Dalian University of Technology | 2010年 / 50卷 / 01期

关键词：

Adhesion - Tribology - Expansion - Geotechnical engineering - Stresses - Soils - Friction;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In order to make an analysis of cylindrical cavity expansion in cohesive-frictional soil with non-brittle softening behavior, damage softening parameter that represents degradation grads of material mechanics capacity is introduced into Rowe's stress-dilatancy relation accordingly considering soil softening behavior and dilatancy related to friction angle, cohesion and mean stress. Based on the combination of stress-dilatancy relation with the extended spatial mobilization plane (SMP) theory involving the effect of intermediate principal stress and the governing equations of axisymmetric cylindrical cavity expansion in the plane strain condition, the numerical procedure of pressure-expansion process with large strain is proposed. A comparative study is made for the present solution and current solution based on Mohr-Coulomb criterion to display the effect of intermediate principal stress. Also the influence of damage parameter, cohesion and friction angle on limit cavity pressure, plastic radius, stress distribution and average dilatancy of plastic zone is examined.

引用

页码：103 / 110