Influence of the Three-Dimensional Effect of Pile-Soil System on the Vertical Dynamic Response of Large-Diameter Piles in Low-Strain Integrity Testing

Wenjie Guan, Meixia Zhang, Zekun Wang (), Guosheng Jiang, Wenqi Liu, Sheng Cao, Chin Jian Leo, Elieen An, Xiaodong Gao and Wenbing Wu ()
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Wenjie Guan: Faculty of Engineering, Zhejiang Institute, China University of Geosciences, Wuhan 430074, China
Meixia Zhang: Faculty of Engineering, Zhejiang Institute, China University of Geosciences, Wuhan 430074, China
Zekun Wang: 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
Wenqi Liu: Faculty of Engineering, Zhejiang Institute, China University of Geosciences, Wuhan 430074, China
Sheng Cao: China Railway 16th Bureau Group No.3 Engineering Co., Ltd., Huzhou 313000, China
Chin Jian Leo: School of Engineering, Design and Built Environment, University of Western Sydney, Locked Bag 1797, Penrith, NSW 2751, Australia
Elieen An: School of Engineering, Design and Built Environment, University of Western Sydney, Locked Bag 1797, Penrith, NSW 2751, Australia
Xiaodong Gao: 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

Energies, 2022, vol. 15, issue 24, 1-23

Abstract: The low-strain integrity testing of large-diameter piles has attracted more and more attention because of its wide application in offshore engineering, such as for wind turbines, etc. Body and Rayleigh waves generate on the top surface of large-diameter piles after the excitation load. The multi-reflections of these waves from the pile side result in the obvious three-dimensional effect at the pile top. Therefore, one-dimensional wave theory is no longer suitable for interpreting the wave propagation in the pile body under vertical excitation. In this paper, based on the “pile in pile” conception, both the pile and soil were simulated using a three-dimensional continuum model, considering the vertical displacement, to investigate the influence of the three-dimensional effect of the pile-soil system on the vertical dynamic response of large-diameter piles in low-strain integrity testing. The axisymmetric solution to the three-dimensional pile-soil system was obtained, and the rationality of the proposed solution was verified by comparing it with the results of the finite element method and the results of other existing solutions. Arithmetic examples were used to describe the influence of the three-dimensional effect of the pile-soil system on the vertical dynamic response of large-diameter piles.

Keywords: large-diameter pile; three-dimensional effect; low-strain integrity testing; velocity response (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
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