Journal of Central South University of Technology

, Volume 10, Issue 3, pp 231–236 | Cite as

Analysis of pile load-transfer under pile-side softening

Article

Abstract

A set of analytical equations for the variation of the axial force along depth and the pile-top load-settlement curve were established, using tri-linear softening model to pile-side soil and bilinear hardening model to pile-end soil. Influences of the pile-side and pile-end soil behavior on the load-settlement curve were discussed, indicating that the lowering reason for the variation step degree of the axial force along depth is the softening of the pile-side soil to result in the side friction lowering when the pile-top load is increased. To verify the reliability of this method, the parameters used in calculation are obtained from the test in Zhuzhou area. The obtained results are then compared with the tested results. Contrast shows that the calculated results and the tested values are very close, which illustrates that the proposed method is reliable.

Key words

load-settlement curve tri-linear softening model bilinear hardening model 

CLC number

TU973+ 17 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    CHEN Long-zhu, LIANG Guo-qian, ZHU Jin-ying. Analytical calculation method of the axial load-settlement curve for piles[J]. Chinese Journal of Geotechnical Engineering (in Chinese), 1994, 16(6): 30–38.Google Scholar
  2. [2]
    Seed H B, Reese L C. The action of soft clay along friction pile[J]. Trans ASCE, 1995, 122: 731–754.Google Scholar
  3. [3]
    Kezdi A. The bearing capacity of pile and pile groups [A]. Proc 4th Int Conf S M & F E[C]. New York, 1957. 46–51.Google Scholar
  4. [4]
    Kraft L M, Ray R P, Kagawa T. Theoretical t-z Curves[J]. Journal Geotechnique Engineering Division, ASCE, 1981, 107(11): 1543–1561.Google Scholar
  5. [5]
    DU Shao-jun, LING Li-chuan. Study of the numerical value calculation method for single pile load-settlement curve[J]. Journal of Central South University of Technology (in Chinese), 1998, 29(2): 120–122.Google Scholar
  6. [6]
    Poulos H G, Davis E H. Pile foundation analysis and design[M]. New York: John Wiley & Sons, 1980.Google Scholar
  7. [7]
    Prevost J H, Hughes T J R. Finite element solution of elastic-plastic boundary value problems [J]. Journal of Applied Mechanics, 1984, 48: 68–76.Google Scholar
  8. [8]
    SHEN Zhu-jiang. A few of problems of deformation calculation for strain softening material[J]. Jiangsu Mechanics(in Chinese), 1982, (6): 1–4.Google Scholar

Copyright information

© Central South University 2003

Authors and Affiliations

  1. 1.School of Geology and Environment EngineeringCentral South UniversityChangshaChina
  2. 2.Department of Civil EngineeringZhuzhou Institute of TechnologyZhuzhouChina

Personalised recommendations