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Ultimate Capacity Analysis and Determination of the Position of Failure Surface for Uplift Piles

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  • Qian Su
  • Xiaoxi Zhang
  • Pingbao Yin
  • Wenhui Zhao

Abstract

Ultimate capacity and failure surface position of uplift piles are dependent on soil parameters. In this paper, the horizontal slice method is used to discuss the relation among the ultimate uplift capacity, the failure surface position, and soil parameters with Mohr-Coulomb failure criterion. According to the limit equilibrium analysis, the ultimate uplift capacity is calculated by dividing soil around the pile into slices with considering the potential failure surface as a group of several sectional planes. Then the multivariate function used to calculate ultimate capacity is established and optimized by the sequential quadratic programming. Through the numerical calculation and comparison with the previous research, the results show that the method is reasonable and effective and can be used to determine the failure surface and the magnitude of the ultimate capacity of uplift piles.

Suggested Citation

  • Qian Su & Xiaoxi Zhang & Pingbao Yin & Wenhui Zhao, 2014. "Ultimate Capacity Analysis and Determination of the Position of Failure Surface for Uplift Piles," Mathematical Problems in Engineering, Hindawi, vol. 2014, pages 1-6, April.
    • Handle: RePEc:hin:jnlmpe:540143
    DOI: 10.1155/2014/540143
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