Nonlinear Finite Element Analysis of Super-Long Pile and Soil Interaction in Soft Soil

Abstract:

In this paper, a nonlinear three-dimensional finite element model for super-long pile and soil interaction is established. In this model, contact elements are applied to simulate the nonlinear behavior of interaction of super-long pile and soil. A nonlinear elastic constitutive model for concrete is employed to analyze stress-strain relation of pile shaft under the axial load and the Duncan-Chang’s nonlinear constitutive model is used to reflect nonlinear and inelastic properties of soil. The side friction resistance, axial force, pile-tip resistance, and developing trend of soil plastic deformation are obtained and compared with measured results from static load tests. It is demonstrated that a super-long pile has the properties of degradation of side friction resistance and asynchronous action between side and pile-tip resistance, which is different from piles with a short to medium length.

• Periodical: Advanced Materials Research (Volumes 201-203)
• Pages: 1601-1605
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.201-203.1601
• Online since: February 2011
• Authors: Shang Ping Chen, Wen Juan Yao, Sheng Qing Zhu
• Keywords: Asynchronous Action, Degradation, Nonlinear Constitutive Model, Super-Long Pile

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