›› 2018, Vol. 39 ›› Issue (5): 1901-1907.doi: 10.16285/j.rsm.2016.1504

• Numerical Analysis • Previous Articles     Next Articles

Lateral vibration impedance of piles embedded in layered soil based on Laplace transform

XIONG Hui, JIANG Ya-feng, YU Rong-xia   

  1. Department of Civil Engineering, Hunan University, Changsha, Hunan 410082, China
  • Received:2016-06-20 Online:2018-05-11 Published:2018-06-12
  • Supported by:

    This work was supported by the Program for New Century Excellent Talents in University(NCET?13?190) and the Science and Technology Project of Hunan Province (2013FJ4214).

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Abstract: Using Laplace transform, the calculation on lateral vibration impedance of pile-soil interaction embedded in layered soil is investigated. Vibration differential equation of pile-head in layered-soil with axial loading is transformed into algebraic equations by means of transfer matrix method and Laplace transform to solve the parameters of piles for the lateral vibration response. Combined with dynamic Winkler model in the frequency domain, the lateral vibration impedance of a pile is derived. Based on the obtained solution, the pile-soil-pile lateral dynamic interaction factors is deduced. Through theoretical analyses of practical problems, the present method is verified to be applicable and efficient. The method is simple to use, and the calculated results agree well with the existing results. Moreover, the present method can give a continuous solution and applied to the analysis of pile-soil interaction.

Key words: layered soil, transfer matrix method, Laplace transform, pile-soil interaction, lateral vibration impedance

CLC Number: 

  • TU 473

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