RESEARCH ARTICLE


A Semi-Analytical Model for the Simulation of the Isolation of the Vibration Due to a Harmonic Load Using Pile Rows Embedded in a Saturated Half-Space



Bin Xu1, 2, Jian-Fei Lu*, 3, Jian-Hua Wang4
1 Department of Civil Engineering, Shanghai JiaoTong University, Shanghai, 200030, P.R. China
2 Department of Civil Engineering, Nanchang Institute of Technology, Nanchang, Jianxi, 330099, P.R. China
3 Department of Civil Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, P.R. China
4 Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200030, P.R. China


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Creative Commons License
© 2010 Xu et al.

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.

* Address correspondence to this author at the Department of Civil Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, P.R. China; Tel: +86(511)88791011; E-mail: ljfdoctor@yahoo.com


Abstract

The isolation of the vibration due to a harmonic vertical load using pile rows embedded in a saturated poroelastic half-space is investigated in this study. Using the fundamental solution for a circular patch load and Muki’s method, the second kind of Fredholm integral equations describing the dynamical interaction between the pile rows and the saturated poroelastic half-space are obtained. Numerical solution of the integral equations yields the dynamic response of the pile-half-space system. The vibration isolation effect of the pile rows is investigated via the proposed semi-analytical model. Numerical results indicate that stiffer piles have better isolation vibration effect than flexible piles. Moreover, the pile length and the spacing between neighboring piles in one pile row have significant influence on the isolation vibration effect of pile rows, while the influence of the spacing between neighboring pile rows is relatively smaller.

Keywords: Poroelastic half-space, Biot’s theory, Fredholm integral equation, Pile rows, Passive vibration isolation.