Bearing capacity of foundation on slope determined by energy dissipation method and model experiments

来源期刊：中南大学学报(英文版)2007年第1期

论文作者：杨小礼 王志斌 邹金锋 李亮

文章页码：125 - 125

Key words：energy dissipation; bearing capacity; soil slope; model experiment

Abstract: To determine the ultimate bearing capacity of foundations on sloping ground surface in practice, energy dissipation method was used to formulate the bearing capacity as programming problem, and full-scale model experiments were investigated to analyze the performance of the soil slopes loaded by a strip footing in laboratory. The soil failure is governed by a linear Mohr-Coulomb yield criterion, and soil deformation follows an associated flow rule. Based on the energy dissipation method of plastic mechanics, a multi-wedge translational failure mechanism was employed to obtain the three bearing capacity factors related to cohesion, equivalent surcharge load and the unit gravity for various slope inclination angles. Numerical results were compared with those of the published solutions using finite element method and those of model experiments. The bearing capacity factors were presented in the form of design charts for practical use in engineering. The results show that limit analysis solutions approximate to those of model tests, and that the energy dissipation method is effective to estimate bearing capacity of soil slope.

基金信息：the National Natural Science Foundation of China
the Program of New Century Excellent Talents in University
the Foundation for the Author of National Excellent Doctoral Dissertation of China