| Bearing capacity of foundation on slope determined by energy dissipation method and model experiments |
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| 作者姓名： | 杨小礼 王志斌 邹金锋 李亮 |
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| 作者单位： | School of Civil and Architectural Engineering Ce ntral South University，School of Civil and Architectural Engineering，Ce ntral South University，School of Civil and Architectural Engineering，Ce ntral South University，School of Civil and Architectural Engineering，Ce ntral South University，Changsha 410075，China，Changsha 410075，China，Changsha 410075，China，Changsha 410075，China |
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| 基金项目： | 国家自然科学基金;教育部跨世纪优秀人才培养计划;教育部全国优秀博士学位论文作者专项基金 |
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| 摘 要： | 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.
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| 关 键 词： | 能量消耗 轴承方位 土壤 模型实验 |
| 收稿时间： | 18 June 2006 |
| 修稿时间： | 2006-06-18 |
Bearing capacity of foundation on slope determined by energy dissipation method and model experiments |
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| Yang Xiao-li , Wang Zhi-bin , Zou Jin-feng and Li Liang.Bearing capacity of foundation on slope determined by energy dissipation method and model experiments[J].Journal of Central South University of Technology,2007,14(1):125-128. |
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| Authors: | Yang Xiao-li Wang Zhi-bin Zou Jin-feng and Li Liang |
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| Affiliation: | School of Civil and Architectural Engineering, Central South University, Changsha 410075, China |
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| 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. |
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| Keywords: | energy dissipation bearing capacity soil slope model experiment |
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