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Frontiers of Structural and Civil Engineering >> 2013, Volume 7, Issue 4 doi: 10.1007/s11709-013-0227-5

Foundations bearing capacity subjected to seepage by the kinematic approach of the limit analysis

1. Civil Engineering Department, Faculty of Engineering, University of Guilan, Rasht P.O. 41635-3756, Iran; 2. Civil and Environmental Engineering Department, School of Engineering, Shiraz University, Shiraz P.O. 71334-1585, Iran

Available online:2013-12-05

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An estimate of the ultimate load on foundations on soil layers subject to groundwater flow has been presented. The kinematic approach of the limit analysis was employed to find the upper-bound limit of the bearing capacity. Both smooth and rough base strip foundations were considered associated with different collapse patterns. Presence of the groundwater flow leads to a non-symmetric collapse pattern, i.e., a weak side and a strong side in two-sided collapse patterns, depending on the direction of the flow. It was found that the bearing capacity has a decreasing trend with increase in the groundwater flow gradient and hence, a reduction factor has been introduced to the third term in the bearing capacity equation as a function of the flow gradient.

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