基于IFFT法的风机单桩基础随机冰力时域模拟  

Time Domain Simulation of Random Ice Force on Wind Turbine Single Pile Foundation Based on IFFT Method

作　　者：陈虎 王明旗 刘玉玲 张兴顺 刘鹏 韩大伟 CHEN Hu;WANG Mingqi;LIU Yuling;ZHANG Xingshun;LIU Peng;HAN Dawei(Shandong Energy New Energy(Dongying)Co.,Ltd.,Dongying 250014,Shandong,China;Power China Huadong Engineering Corporation Limited,Hangzhou 311122,Zhejiang,China;Zhejiang East China Engineering Consulting Co.,Ltd.,Hangzhou 311100,Zhejiang,China;State Key Laboratory of Water Resources Engineering and Management,Wuhan University,Wuhan 430072,Hubei,China)

机构地区：[1]山能新能源(东营)有限公司,山东东营250014 [2]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [3]浙江华东工程咨询有限公司,浙江杭州311100 [4]武汉大学水资源工程与调度全国重点实验室,湖北武汉430072

出　　处：《中国海洋平台》2024年第6期23-29,共7页China offshore Platform

摘　　要：针对现阶段随机冰力时域模拟方法单一的问题,将一种经典的时域模拟方法——快速傅里叶逆变换(Inverse Fast Fourier Transform,IFFT)法,引入海上风机单桩基础随机冰载荷研究中。结合随机冰力模型,采用MATLAB软件平台编写冰载荷时域模拟程序。基于山东省东营市渤中某海上风电场8.5 MW单桩式风机的结构与尺寸,进行算例分析,考虑入射角度作用,得到随机冰力在单桩基础结构上的实际分布情况,对IFFT法模拟随机冰力的精度和速度进行综合评价。结果表明,IFFT法作为一种计算简单快速、结果精确的时域模拟方法,适用于单桩基础随机冰力的计算,且所编程序可实现输入少量参数,快速高效获得冰力数值与分布的目的,具有实用性和推广性。In response to the problem that the time domain simulation method of random ice force is single at the present stage,a classical time domain simulation method,the Inverse Fast Fourier Transform(IFFT)method,is introduced into the study of random ice load on the monopile foundation of offshore wind turbines.Combining with the random ice force model,the MATLAB software platform is used to write the ice load time domain simulation program.Based on the structure and dimensions of an 8.5 MW monopile wind turbine at an offshore wind farm in Bozhong,an arithmetic analysis is conducted to obtain the actual distribution of random ice forces on the monopile foundation structure by considering the incidence angle,and the accuracy and speed of the IFFT method to simulate random ice forces are evaluated comprehensively.The results show that the IFFT method,as a simple,fast and accurate time-domain simulation method,is suitable for calculating random ice force on the single pile foundation.The program compiled can achieve the purpose of inputting a small number of parameters to obtain the values and distributions of ice force quickly and efficiently,which is practical and generalizable.

关 键 词：单桩基础 随机冰载荷 IFFT法 时域模拟 

分 类 号：TU473.1[建筑科学—结构工程]