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Volume 33 Issue sup2
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CAI Yan-yan, YU Jin, ZHENG Chun-ting, QI Zhi-bo, SONG Bo-xue. Analytical solution for longitudinal dynamic complex impedance of tapered pile[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(sup2): 392-398.
Citation: CAI Yan-yan, YU Jin, ZHENG Chun-ting, QI Zhi-bo, SONG Bo-xue. Analytical solution for longitudinal dynamic complex impedance of tapered pile[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(sup2): 392-398.
shu

Analytical solution for longitudinal dynamic complex impedance of tapered pile

  • 1. School of Civil Engineering, Huaqiao University, Xiamen 361021, China; 2. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221008, China; 3. Key Laboratory of Bridge-Structure Engineering of Ministry of Communications, Chongqing Jiaotong University, Chongqing 400074, China

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  • Received Date: August 03, 2011
  • Published Date: December 06, 2011
    Graphical Abstract
    • Abstract
  • The longitudinal dynamic complex impedance of tapered piles in layered ground is investigated. Assuming the surrounding soil to be plane strain model and considering variable cross-section of the tapered piles and stratification of the surrounding soil, the pile-soil system is discretized into finite segments. Then, by means of the Laplace technique and the impedance function transfer method, the analytical solution of complex stiffness of the tapered piles under vertical exciting force is derived. Additionally, by means of parametric study method, the influence of the cone angle on the complex stiffness at the pile top is investigated. It is shown that the amplitudes of resonance peak of dynamic stiffness curve and dynamic damping curve increase as the cone angle increases. When the length of tapered piles is variable and other parameters are unaltered, the amplitude of resonance peak of dynamic stiffness curve decreases as the cone angel increases and the amplitude of resonance peak of dynamic curve increases as the cone angel increases. When the radius of tapered pile tip is variable and other parameters are unaltered, the amplitudes of resonance peak of dynamic stiffness curve and dynamic damping curve increase as the radius of tapered pile tip increases.
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    • References (23)
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