Vertical Dynamic Impedance of a Viscoelastic Pile in Arbitrarily Layered Soil Based on the Fictitious Soil Pile Model

Xiaoyan Yang, Lixing Wang, Wenbing Wu, Hao Liu, Guosheng Jiang, Kuihua Wang and Guoxiong Mei
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Xiaoyan Yang: Faculty of Engineering, Zhejiang Institute, China University of Geosciences, Wuhan 430074, China
Lixing Wang: Faculty of Engineering, Zhejiang Institute, China University of Geosciences, Wuhan 430074, China
Wenbing Wu: Faculty of Engineering, Zhejiang Institute, China University of Geosciences, Wuhan 430074, China
Hao Liu: Faculty of Engineering, Zhejiang Institute, China University of Geosciences, Wuhan 430074, China
Guosheng Jiang: Faculty of Engineering, Zhejiang Institute, China University of Geosciences, Wuhan 430074, China
Kuihua Wang: Research Center of Coastal Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China
Guoxiong Mei: Faculty of Engineering, Zhejiang Institute, China University of Geosciences, Wuhan 430074, China

Energies, 2022, vol. 15, issue 6, 1-21

Abstract: The vertical vibration of a viscoelastic pile immersed in arbitrarily layered soil is investigated by taking the interaction among pile, pile surrounding soil (PSS) and pile end soil (PES) into account. Firstly, considering both the stratification and stress wave effect of soil, a mathematical model of the pile–soil system is established based on the fictitious soil pile (FSP) model. Then, utilizing the impedance function transfer method and Laplace transform technique, the analytical solutions of the vertical dynamic impedance of pile are derived in the frequency domain. The analytical solutions are validated by comparing them with other existing solutions. Finally, a parametric study is put forward to investigate the properties of PES on the vertical dynamic impedance of pile. The results reveal that the properties of PES have a significant effect on the vertical dynamic impedance of pile, but there is a critical influence thickness for this effect. For the cases of the PES thickness exceeding the critical influence thickness, further increase of PES thickness will not affect the dynamic behavior of the pile–soil system.

Keywords: pile vibration; layered soil; fictitious soil pile model; stress wave effect; vertical dynamic impedance (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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