›› 2011, Vol. 32 ›› Issue (2): 604-610.

• Numerical Analysis • Previous Articles     Next Articles

Dynamic response of elastic layer on transversely isotropic saturated soil to train load

ZHOU Ye1, ZHENG Rong-yue2, LIU Gan-bin2   

  1. 1. Zhejiang Huadong Engineering Safety Technology Co., Ltd., Hangzhou 310014 China; 2. College of Architectural, Civil Engineering and Environment, Ningbo University, Ningbo, Zhejiang 315211, China
  • Received:2009-11-27 Online:2011-02-10 Published:2011-02-16

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Abstract:

A calculation model of dynamic response of transversely isotropic saturated soil under train load is proposed. Rail, rail pad, sleeper, ballast and elastic layer were added into the model. Based on Biot's dynamic poroelastic theory, the dynamic responses of elastic layer on transversely isotropic saturated soils generated by the train load is presented by using the Fourier transform. Numerical results are obtained by using the inverse fast Fourier transform(IFFT); and then, they are used to analyze the influence of the moving load velocity, anisotropic parameter and stiffness coefficient of elastic layer on soil displacemen and pore pressure. The results show that the displacement amplitude increases with the increasing of the load velocity; and the elastic layer has great influence on ground vibration and pore pressure.

Key words: train load, dynamic response, transverse isotropy, poroelastic media

CLC Number: 

  • TU 471.8
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