Journal of Shanghai Jiao Tong University

Journal of Shanghai Jiaotong University >

2021 , Vol. 55 >Issue 9: 1116 - 1125

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2019.246

Dynamic Response of Marine Pile Foundation Under Combined Action of Wind and Wave Loads

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  • 1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
    3. Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received date: 2019-08-20

  Online published: 2021-10-08

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Abstract

In order to study the dynamic response of a single pile foundation under combined action of wind and wave loads in the marine environment, a three-dimensional unidirectional coupling numerical model of wind wave-seabed-single pile is established. The Reynolds average N-S equation and the Biot dynamic equation are used to control the wave motion and seabed response respectively. Based on the verification of the rationality of the model, the influence of wind and wave parameters (such as wind speed, wind shear coefficient, and wave height) on the response of fluid and pile foundation under combined action of wind and wave loads are explored. The results show that the increase of wind speed, wind shear coefficient, and wave height will aggravate the fluid deformation around the pile, accelerate the wave propagation, and then affect the horizontal displacement and bending moment of the pile. Therefore, when calculating the bearing capacity of offshore pile foundations, the combined effect of wind and wave loads on the pile foundation should be considered comprehensively. The results will provide an important theoretical basis for the study of the bearing performance of pile foundations in harsh marine environments.

Key words： wind and wave load; Biot’s dynamic equation; u-p model; interaction of wind and wave; monopile

Cite this article

LI Wanling, ZHANG Qi, ZHOU Xianglian . Dynamic Response of Marine Pile Foundation Under Combined Action of Wind and Wave Loads[J]. Journal of Shanghai Jiaotong University, 2021 , 55(9) : 1116 -1125 . DOI: 10.16183/j.cnki.jsjtu.2019.246

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