Numerical Modeling of Soil-Pile Interface Behaviors of a Pipe Group Foundation under Complicated Load

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Abstract:

A three-dimensional nonlinear contact finite element method was employed in this paper to simulate the soil-pile interface behaviors of a pile group under complicated load in the Jiyang dike. The displacement at the soil-pile interfaces was particularly calculated. The computational results show that interaction mainly occurred in the bottom of the cap, and interaction development was restrained with the help of friction effect between pipes and surrounding soil. Moreover, the most unfavorable load combination is vertical uplift force together with horizontal force. As a result, potential channels of seepage flow could be formed at the location where cracks develop. Seepage field would be changed and the probability for seepage failure is increasing.

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645-649

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October 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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