Numerical and experimental analyses for bearing capacity of rigid strip footing subjected to eccentric load

被引:3
作者
Lu Liang [1 ,2 ]
Wang Zong-jian [3 ]
Arai, K. [4 ]
机构
[1] Chongqing Univ, Sch Civil Engn, Chongqing 400045, Peoples R China
[2] Chongqing Univ, Minist Educ, Key Lab New Technol Construct Cities Mt Area, Chongqing 400045, Peoples R China
[3] Chongqing Jiaotong Univ, Inst Geotech Engn, Chongqing 400074, Peoples R China
[4] NPO Res Inst Ground Disaster Prevent Fukui Reg, Fukui 9100004, Japan
关键词
bearing capacity; eccentric load; slip surface; shear band; finite element method; model test; FINITE-ELEMENTS; FAILURE; FOUNDATION;
D O I
10.1007/s11771-014-2386-5
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
A footing may get an eccentric load caused by earthquake or wind, thus the bearing capacity of footing subjected to eccentric load become a fundamental geotechnical problem. The conventional limit equilibrium method used for this problem usually evaluates the material properties only by its final strength. But the classical finite element method (FEM) does not necessarily provide a clear collapse mechanism associated with the yield condition of elements. To overcome these defects, a numerical procedure is proposed to create an explicit collapse mode combining a modified smeared shear band approach with a modified initial stress method. To understand the practical performance of sand foundation and verify the performance of the proposed procedure applied to the practical problems, the computing results were compared with the laboratory model tests results and some conventional solutions. Furthermore, because the proposed numerical procedure employs a simple elasto-plastic model which requires a small number of soil parameters, it may be applied directly to practical design works.
引用
收藏
页码:3983 / 3992
页数:10
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