Kinematic seismic response of end-bearing piles to S-waves

Changjie Zheng, George Mylonakis, George Kouretzis, Lubao Luan

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

In this paper we revisit the problem of modelling analytically the kinematic interaction between a single pile and its surrounding soil under the action of seismic shear waves, by means of a Tajimi-type continuum elastodynamic model in three dimensions. The model provides the steady-state kinematic response of a cylindrical end-bearing pile embedded in a homogeneous viscoelastic soil layer, subjected to vertically propagating harmonic S-waves. Results of the model are first validated against the results of numerical simulations, and the results of an existing, approximate solution. Accordingly, we employ the model in a parametric study, where we investigate the sensitivity of the seismic response of piles to certain key problem parameters, including pile slenderness, soil-pile relative stiffness, excitation frequency and fixity conditions at the pile head. The solution yields closed-form expressions for pile deformations and for the soil resistance developing on the pile, that do not require introducing fitting coefficients.

Original languageBritish English
Article number107547
JournalSoil Dynamics and Earthquake Engineering
Volume163
DOIs
StatePublished - Dec 2022

Keywords

  • Horizontal vibration
  • Piles
  • Seismic waves
  • Viscoelastic soil

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