Nonlinear analysis of laterally loaded rigid piles in cohesive soil

Lianyang Zhang, Saeed Ahmari

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

This article presents a method for the nonlinear analysis of laterally loaded rigid piles in cohesive soil. The method considers the force and the moment equilibrium to derive the system equations for a rigid pile under a lateral eccentric load. The system equations are then solved using an iteration scheme to obtain the response of the pile. The method considers the nonlinear variation of the ultimate lateral soil resistance with depth and uses a new closed-form expression proposed in this article to determine the lateral bearing factor. The method also considers the horizontal shear resistance at the pile base, and a bilinear relationship between the shear resistance and the displacement is used. For simplicity, the modulus of horizontal subgrade reaction is assumed to be constant with depth, which is applicable to piles in overconsolidated clay. The nonlinearity of the modulus of horizontal subgrade reaction with pile displacement at ground surface is also considered. The validity of the developed method is demonstrated by comparing its results with those of 3D finite element analysis. The applications of the developed method to analyze five field test piles also show good agreement between the predictions and the experimental results. The developed method offers an alternative approach for simple and effective analysis of laterally loaded rigid piles in cohesive soil.

Original languageEnglish (US)
Pages (from-to)201-220
Number of pages20
JournalInternational Journal for Numerical and Analytical Methods in Geomechanics
Volume37
Issue number2
DOIs
StatePublished - Feb 10 2013

Fingerprint

cohesive soil
Nonlinear analysis
Piles
pile
Soils
subgrade
Bearings (structural)
analysis
method
nonlinearity
Clay
Finite element method
clay
prediction

Keywords

  • Base shear resistance
  • Cohesive soil
  • Lateral loading
  • Modulus of horizontal subgrade reaction
  • Nonlinear analysis
  • Rigid piles
  • Ultimate soil resistance

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Materials Science(all)
  • Mechanics of Materials
  • Computational Mechanics

Cite this

Nonlinear analysis of laterally loaded rigid piles in cohesive soil. / Zhang, Lianyang; Ahmari, Saeed.

In: International Journal for Numerical and Analytical Methods in Geomechanics, Vol. 37, No. 2, 10.02.2013, p. 201-220.

Research output: Contribution to journalArticle

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