Civil Engineering

Dynamic Stiffnesses of Timoshenko Type Pile in Horizontal Vibration

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  • Department of Civil Engineering, Shanghai University, Shanghai 200072, China

Received date: 2010-03-18

  Online published: 2011-10-26

Abstract

Based on a continuum model of interaction between pile and soil, dynamic characteristics of horizontal vibration of a Timoshenko type end-bearing pile in a linear viscoelastic soil layer is studied by making the pile equivalent to a Timoshenko beam and using the existing results of soil resistance. Semi-analytical expressions of dynamic stiffness of the pile head is presented in the frequency domain. Variations of stiffness with respect to frequency are shown in terms of figures. Influences of the material and geometry parameters on stiffness are discussed. The results are compared with those obtained from the Euler-Bernoulli type model. It is shown that the dynamic stiffness of the end-bearing pile depends on the pile’s slenderness ratio, soil property and excitation frequency. The results presented are useful in pile design.

Cite this article

YAO Ge,YANG Xiao . Dynamic Stiffnesses of Timoshenko Type Pile in Horizontal Vibration[J]. Journal of Shanghai University, 2011 , 17(5) : 662 -668 . DOI: 10.3969/j.issn.1007-2861.2011.05.017

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