›› 2017, Vol. 38 ›› Issue (10): 2916-2922.doi: 10.16285/j.rsm.2017.10.019

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

A method for p-y curve of a single pile based on stress increment

LI Hong-jiang1, 2, LIU Song-yu1, 2, TONG Li-yuan1, 2   

  1. 1. Institute of Geotechnical Engineering, Southeast University, Nanjing, Jiangsu 210096, China; 2. Jiangsu Key Laboratory of Urban Underground Engineering & Environmental Safety, Southeast University, Nanjing, Jiangsu 210096, China
  • Received:2016-02-29 Online:2017-10-10 Published:2018-06-05
  • Supported by:

    This work was supported by the National Key Research Projects of China (2016YFC0800201), the Construction Science and Technology Research Project of Jiangsu Province (2014ZD66), the Fundamental Research Funds for the Central Universities and the Graduate Student Scientific Research Innovation Program of Jiangsu Province (KYLX16_0244).

Abstract: Due to the lack of mature theoretical system, the research progress of p-y curve is slow. With the consideration of the actual stress state of foundation soil and deployment of Vesic expansion theory, a new method for analysis of p-y curve based on stress increment is developed. This method combines the contributions of soil radial stress increment, longitudinal stress increment effect and deep rotation angle of pile to the horizontal soil resistance. It is a type of solution of p-y curve considering various factors. The method can be applied to different type of piles. The case results show that this method is correct and accurate in analyzing the behavior of laterally loaded pile. It produces better precision in large deformation analysis than Reese, API and Kim methods. The above research result is of great significance for in-depth study of the p-y curve development.

Key words: p-y curve, stress increment, lateral pile, cavity expansion, large deformation

CLC Number: 

  • TU 473

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