Dynamic response of a single pile embedded in a poroelastic soil to moving loads |
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| Authors: | WANG Jian-hua LU Jian-fei WANG Wei-dong XU Bin |
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| Institution: | 1. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200030, China; 2. Department of Civil Engineering, Jiangsu University, Zhenjiang 212013, China; 3. East China Architectural Design & Research Institute Co. Ltd., Shanghai 200020, China; 4. Department of Civil Engineering, Nanchang Institute of Technology, Nanchang 330029, China |
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| Abstract: | Based on Biot’s theory, the general solutions for a poroelastic half space subjected to moving loads and the fundamental solution corresponding to a vertical harmonic force applied at the interior of a saturated half space are developed via the Fourier transform and Hankel transform method. Utilizing Muki’s method, the second kind of Fredholm integral equation describing the dynamic interaction between a pile and the half space is obtained. Numerical results in the time-space domain are obtained by performing the inverse Fourier transform. Numerical results show that the moving load can generate negative frication at the side of the pile. The maximum axial force of the pile and the pore pressure along the pile side increase with increasing load velocity. In addition, the pore pressure concentration phenomena occur at the upper part of the pile. |
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| Keywords: | moving loads poroelastic half space pile Biot’s theory Fredholm integral equation IFFT method |
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