Undrained limiting pressure behind soil gaps in contiguous pile walls |
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| Institution: | 1. MOE Key Laboratory of Coast Civil Structure Safety, Tianjin University, Tianjin 300072, China;2. Department of Civil Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | Finite element limit analysis with plane strain condition is employed to determine the upper and lower bound solutions of the undrained limiting pressure behind soil gaps and the lateral force acting on a pile per unit length in a contiguous pile wall. Computed bound solutions confirm serious limitations of existing studies in predicting these two solutions. Predicted failure mechanisms and the arching effect behind soil gaps are discussed. A closed-form equation of the limiting pressure factor is proposed for a convenient and accurate prediction of the lateral force acting on a pile in contiguous pile walls in practice. |
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| Keywords: | Limit analysis Numerical analysis Stability |
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