RESEARCH ARTICLE
Soil-Pile Dynamic Interaction in the Viscous Damping Layered Soils
Yinhui Wang1, Kuihua Wang2, Zhixiang Zha*, 1, Renbo Que2
Article Information
Identifiers and Pagination:
Year: 2011Volume: 5
First Page: 100
Last Page: 108
Publisher ID: TOCIEJ-5-100
DOI: 10.2174/1874149501105010100
Article History:
Received Date: 1/9/2010Revision Received Date: 21/11/2010
Acceptance Date: 3/1/2011
Electronic publication date: 29/4/2011
Collection year: 2011
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
Modeling surrounding soil as a three-dimensional axisymmetric continuum and considering its wave effect, soil-pile dynamic longitudinal interaction in viscous layered soils is studied. The pile is assumed to be vertical, elastic and of uniform section, and the soil is layered and visco-elastic. Longitudinal vibration of pile in viscous damping layered soils undergoing arbitrary load is theoretically investigated. By taking the Laplace transform, the question can be solved in frequency domain. Utilizing two potentials combined with impedance transfer functions, analytical solutions for both the impedance function and mobility at the pile head in frequency domain are yielded. With the convolution theorem and inverse Fourier transform, a semi-analytical solution of velocity response in time-domain undergoing a half-cycle sine pulse force is derived. Based on the solutions proposed herein, the effects of variety of soil modulus on mobility curves and reflection wave curves are emphatically discussed. The results shows that there is a smaller peak between every two adjacent larger peaks on the mobility curve in layered soil, and larger peak cycle reflects the location where the modulus of the soil varies abruptly. The conclusions can provide theoretical guidance for non-destruction test of piles.