Horizontal Vibration Characteristics of a Tapered Pile in Arbitrarily Layered Soil

Xiaoyan Yang, Guosheng Jiang, Hao Liu, Wenbing Wu, Guoxiong Mei and Zijian Yang
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Xiaoyan Yang: 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
Hao Liu: 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
Guoxiong Mei: Faculty of Engineering, Zhejiang Institute, China University of Geosciences, Wuhan 430074, China
Zijian Yang: Faculty of Engineering, Zhejiang Institute, China University of Geosciences, Wuhan 430074, China

Energies, 2022, vol. 15, issue 9, 1-19

Abstract: A tapered pile (TP) is a new type of pile with a good bearing capacity, and scholars have conducted in-depth research on its static bearing characteristics. However, there is relatively little research on its dynamic bearing characteristics. In this paper, the horizontal vibration behavior of a tapered pile in arbitrarily layered soil is studied. Utilizing the Winkler foundation model and Timoshenko beam model to simulate pile-surrounding soil (PSS) and a tapered pile, respectively, the horizontal vibration model of a tapered pile embedded in layered soil was built. The analytical solutions for the horizontal displacement (HD), bending moment (BM), and shear force (SF) of a tapered pile were derived, and then the solutions for the horizontal dynamic impedance (HDI), rocking dynamic impedance (RDI), and horizontal-rocking coupling dynamic impedance (HRDI) of pile head were obtained. Using the present solutions, the effects of soil and pile properties on the horizontal vibration characteristics of a tapered pile were systemically studied. The ability of a tapered pile–soil system to resist horizontal vibration can be improved by strengthening the upper soil, but this ability cannot be further improved by increasing the thickness of the strengthened upper soil if its thickness is greater than the critical influence thickness.

Keywords: tapered pile; horizontal vibration; arbitrarily layered soil; linear viscoelastic medium; 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 (1)

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