Ultimate Bearing Capacity of Rectangular Footings on Inhomogeneous Soil Under Combined Loading

ZHANG Qi-yi; LUAN Mao-tian; ZHANG Xiao-ling

Journal of Beijing University of Technology > 2009 > 35(3): 323-329.

ZHANG Qi-yi, LUAN Mao-tian, ZHANG Xiao-ling. Ultimate Bearing Capacity of Rectangular Footings on Inhomogeneous Soil Under Combined Loading[J]. Journal of Beijing University of Technology, 2009, 35(3): 323-329.

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Ultimate Bearing Capacity of Rectangular Footings on Inhomogeneous Soil Under Combined Loading

1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;
2. Institute of Geotechnical Engineering, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China

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Received Date: September 06, 2007
Available Online: December 06, 2022

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To accurately evaluate the ultimate bearing capacity of rectangular footings on inhomogeneous soil under combined loading is very important in engineering.Based on limit-equilibrium theory and yielding criteria of Mohr-Coulomb,the equilibrium equations can be equivalently transformed to a functional extremization,which boundary values are undetermined,by using the variational method.After introducing the boundary conditions to the functional extremization,the function of the 3-D sliding surface and the failure envelope of rectangular footings on inhomogeneous soil under combined loading are achieved.The effects of the friction angle of soil φ_i,the cohesive force c_i,the ration of L/B,the shear strength ration c_i/c_i+1 and the fluctuation of groundwater level on the ultimate bearing capacity of rectangular footings on inhomogeneous soil foundation and the failure envelop are studied.
- variational method,
- combined loading,
- failure envelop,
- ultimate bearing capacity,
- rectangular footings,
- inhomogeneous soil foundation

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[1]	GREEN A P.The plastic yielding of metal junctions due to combined shear and pressure[J].Journal of the Mechanics and Physics of Solids,1954,2:197-211.
[2]	沈珠江.散粒体极限平衡理论及其应用[J].水利学报,1962,3:22-36. SHEN Zhu-jiang.The limit equilibrium theory and its application of granular material[J].Journal of Hydralic Engineering, 1962,3:22-36.(in Chinese)
[3]	栾茂田,金崇磐,林皋.非均质地基上浅基础的极限承载力[J].岩土工程学报,1988,10(4):4-27. LUAN Mao-tian,JIN Chong-pan,LIN Gao.Ultimate bearing capacity of shallow footings on non-homogeneous soil foundations[J].Chinese Journal of Geotechnical Engineering,1988,10(4):14-27.(in Chinese)
[4]	BRANSBY M F,RANDOLPH M F.Combined loading of skirted foundations[J].Geotechnique,1998,48(5):637-655.
[5]	MURFF J D.Limit analysis of multi-footing foundation systems[C]//SIRIWARDANE H J,ZAMAN M M.Proceedings of the 8th International Conference on Computer Methods and Advances in Geomechanics.Rotterdam:Balkema,1994:233- 244.
[6]	TAIEBAT H A,CARTER J P.Bearing capacity of strip and circular foundations on undrained clay subjected to eccentric loads[J].Geotechnique,2002,52(1):61-64.
[7]	栾茂田,金崇磐,林皋.土体稳定分析极限平衡法改进及其应用[J].岩土工程学报,1992,14(S1):20-29. LUAN Mao-tian,JIN Chong-pan,LIN Gao.Improved limit equilibrium method and its applications to stability analysis of soil masses[J].Chinese Journal of Geotechnical Engineering,1992,14(S1):20-29.(in Chinese)
[8]	栾茂田,金崇磐,林皋.水平与竖向荷载共同作用下非均质地基的稳定性[C]//中国土木工程学会第五届土力学及基础工程学术会议论文选集.北京:中国建筑工业出版社,1990:212-219. LUAN Mao-tian,JIN Chong-pan,LIN Gao.Stability of nonhomogeneous foundation under horizontal and vertical loadings [C]//The symposium of 5th Conference of Chinese Institution of Soil Mechanics and Foundation Engineering of China Civil Engineering Society.Beijing:China Building Industry Press,1990:212-219.

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