Torsional Vibration of a Single Pile in Transversely Isotropic Soil Based on Fractional Derivative Viscoelastic Model

Ji Ping Shen

doi:10.4028/www.scientific.net/AMR.1065-1069.260

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1065-1069Torsional Vibration of a Single Pile in...

Torsional Vibration of a Single Pile in Transversely Isotropic Soil Based on Fractional Derivative Viscoelastic Model

Abstract:

A single pile in soil is modeled as a vertical circular elastic prismatic bar, and the soil around the pile is regarded as transversely isotropic medium. The relationship between stress and displacement of the soil is described by fractional derivative viscoelastic model. Ignoring the radial and vertical displacement, the torsional vibration equation of the soil is built. It is solved by using the method of separation of variables and the boundary conditions of the soil. The torsional vibration of the single pile is also obtained. The torsional complex stiffness at pile head is investigated in particular. The results indicate that anisotropic parameters and model parameters of the soil have effects on the torsional complex stiffness, and the influence rules are different with the homogeneous soil.

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Periodical:

Advanced Materials Research (Volumes 1065-1069)

Pages:

260-263

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1065-1069.260

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Online since:

December 2014

Authors:

Ji Ping Shen

Keywords:

Complex Stiffness, Fractional Derivative, Torsional Vibration, Transversely Isotropic

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