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Horizontal dynamic response of a large-diameter pipe pile considering the second-order effect of axial force

  • Lubao Luan
  • Xuanming Ding
  • Wei Zhou
  • Changjie Zheng
  • Liming Qu
Technical Paper
  • 48 Downloads

Abstract

The second-order effect of axial force on horizontal vibrating characteristics of a large-diameter pipe pile is theoretically investigated. Governing equations of the pile-soil system are established based on elastodynamics. Three-dimensional wave equations of soil are decoupled through differential transformation and variable separation. Consequently, expressions of soil displacements and horizontal resistances can be obtained. An analytical solution of the pile is derived based on continuity conditions between the pile and soil, subsequently from which expressions of the complex impedances are deduced. Analyses are carried out to examine the second-order effect of axial force on the horizontal vibrating behavior of the pipe pile. Some conclusions can be summarized as follows: stiffness and damping factors are decreased with the application of axial force on the pile head; distributions of the pile horizontal displacement and rotation angle are regenerated due to the second-order effect of the applied axial force; and redistributions of the bending moment and shearing force occur due to the second-order effect of the applied axial force.

Keywords

axial force second-order effect horizontal vibration pipe pile analytical solution 

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Notes

Acknowledgement

This work is supported by the National Natural Science Foundation of China (Grant Nos. 51622803 and 51708064) and the National Key Research and Development Program of China (Grant No. 2016YFE0200100).

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Copyright information

© Institute of Engineering Mechanics, China Earthquake Administration and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Lubao Luan
    • 1
  • Xuanming Ding
    • 1
  • Wei Zhou
    • 2
  • Changjie Zheng
    • 1
  • Liming Qu
    • 1
  1. 1.Key Laboratory of New Technology for Construction of Cities in Mountain Area, College of Civil EngineeringChongqing UniversityChongqingChina
  2. 2.Powerchina Chengdu Engineering Corporation LimitedChengduChina

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