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Mathematical Problems in Engineering
Volume 2017, Article ID 6849658, 10 pages
https://doi.org/10.1155/2017/6849658
Research Article

A Numerical Simulation of Base Shear Forces and Moments Exerted by Waves on Large Diameter Pile

School of Energy Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China

Correspondence should be addressed to Zhan-pu Xue; moc.361@321upnahzeux

Received 29 December 2016; Revised 17 March 2017; Accepted 11 June 2017; Published 2 August 2017

Academic Editor: Stefan Balint

Copyright © 2017 You-liang Cheng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

To solve the problem of the dynamic variation of wave force diameter of pile foundation for offshore wind turbines, wave force and moment of large diameter pile foundation can be calculated. In this paper, simulation technique is used to calculate the wave force and moment of different large diameter pile foundation, and the base shear force and moment of the interval 20-degree phase angle are obtained by the base line of the pile. Under the action of a certain load, the complete stress variation of the pile foundation is obtained. According to the basic principle of diffraction theory, the process curve of large diameter pile, and analysis of wave force, diffraction force changes in a certain period of time interval. The results show that the wave after the large diameter pile formed around the vortex, large diameter pile base shear, and moment dynamic change is nonlinear in a complete cycle, the diameter of the pile increases by 0.5 m, and the wave force increases by about 5%, the results show that it provides certain reference value for the offshore pile foundation pile with large diameter primary site. Some significant results for practical application are discussed.