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WANG Xiaobo, LI Jianguang, WANG Duli. An improved method of pile foundation settlement calculation based on Mindlin-Geddes solution[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(4): 475-480. doi: 10.20265/j.cnki.issn.1007-2993.2025-0281
Citation: WANG Xiaobo, LI Jianguang, WANG Duli. An improved method of pile foundation settlement calculation based on Mindlin-Geddes solution[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(4): 475-480. doi: 10.20265/j.cnki.issn.1007-2993.2025-0281
shu

An improved method of pile foundation settlement calculation based on Mindlin-Geddes solution

doi: 10.20265/j.cnki.issn.1007-2993.2025-0281
  • 1.

    AVIC Institute of Geotechnical Engineering Co., Ltd., Beijing 100098, China

  • 2.

    Shanghai Investigation Design and Reserarch Institute Co., Ltd., Shanghai 200434, China

  • Received Date: 2025-06-25
  • Accepted Date: 2025-08-25
  • Rev Recd Date: 2025-08-03
  • Publish Date: 2026-08-08
    Abstract
  • Currently, the calculation of pile foundation settlement mostly relies on the Mindlin-Geddes stress solution. To meet accuracy requirements, this method demands a detailed subdivision of soil strata, resulting in a cumbersome and inefficient computational process. To improve computational efficiency, by combining the Mindlin-Geddes stress solution with the layered summation method, the integral expressions of the average vertical stress influence coefficient were derived, and the pile foundation settlement calculation formulas were improved. Meanwhile, calculation tables of the average vertical stress influence coefficients under different resistance distribution patterns were compiled. Through the calculation and analysis of a dimensionless stress area example and an engineering case, the results show that the average vertical stress influence coefficient method agrees well with the calculation results of the standard method, the accuracy meets the requirements. Moreover, it does not need to further subdivide each soil layer for calculation, effectively improves the efficiency and accuracy of pile foundation settlement calculation, and provides new calculation methods and technical means for the design of pile foundation projects.

     

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