›› 2016, Vol. 37 ›› Issue (9): 2477-2483.doi: 10.16285/j.rsm.2016.09.006

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Analytical solution for torsional dynamic response of a pipe pile in transversely isotropic soil

ZHENG Chang-jie1, 2, DING Xuan-ming1, 2, AN Shu-hong3   

  1. 1. College of Civil Engineering, Chongqing University, Chongqing 400045, China; 2. Key Laboratory of New Technology for Construction of Cities in Mountain Area Ministry of Education, Chongqing University, Chongqing 400045, China; 3. College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Taian, Shandong 271018, China
  • Received:2014-09-15 Online:2016-09-12 Published:2018-06-09
  • Supported by:

    This work was supported by the 111 Project (B13024), the National Natural Science Joint High Speed Railway Key Program Foundation of China (U1134207), the National Natural Science Foundation of China (51378177) and the Program for New Century Excellent Talents in University (NCET-12-0843).

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Abstract: With considering the difference between the horizontal and vertical mechanical properties of ground base, the torsional dynamic response of a pipe pile in transversely isotropic soil is investigated. Based on the stress-strain relationships of transversely isotropic material and soil-pile coupled vibration, differential equations and boundary conditions of the pile and soil are established. The solutions for the displacements of the outer and inner soil are obtained by Laplace transform and the variable separation method. The torsional response of the pipe pile is obtained based on the continuity conditions between the pile and both the outer and inner soil. The expressions of the complex impedance and velocity admittance at the pile head are obtained. The solution proposed in this paper is then compared with existing solutions to verify the validity. A parametric study is conducted to investigate the influence of the anisotropy of the outer and inner soil on the torsional vibration characteristics of the pipe pile.

Key words: pipe pile, torsional vibration, analytical solution, transversely isotropic soil

CLC Number: 

  • TU 473

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