Dynamic Response of a Rigid Cylinder Foundation in a Poroviscoelastic Soil Layer Resting on Rigid Bedrock under a Vertical Time-Harmonic Load
Publication: International Journal of Geomechanics
Volume 19, Issue 5
Abstract
This article presents an analytical investigation of the dynamic response of a rigid cylinder foundation embedded in a poroviscoelastic soil layer overlaying a rigid bedrock and subjected to vertical time-harmonic loading. First, this soil layer is treated as a liquid-saturated porous continuum and described by Boer’s poroelastic model. Second, based on a technique for the separation of variables, the analytical solution for the amplification factor of displacement of the foundation to this load is derived. This solution is then validated by comparing its reduced results with the reported results of saturated half-space cases. Finally, numerical examples obtained from the present solution are performed to show the effects of the thickness of the soil under the foundation bottom, the liquid–solid coupling coefficient of the soil, and the mass ratio of the foundation on the vibration characteristics of the foundation in the soil. The corresponding analysis results are also included, which can provide theoretical reference for engineering practice.
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Acknowledgments
The project was supported by the Open Fund of the Key Laboratory of Road Structure and Material of the Ministry of Transport through Grant kfj170304 (Changsha University of Science and Technology).
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Published In
International Journal of Geomechanics
Volume 19 • Issue 5 • May 2019
Copyright
© 2019 American Society of Civil Engineers.
History
Received: Dec 14, 2017
Accepted: Nov 19, 2018
Published online: Mar 8, 2019
Published in print: May 1, 2019
Discussion open until: Aug 8, 2019
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