风机-基础三维一体化建模的海上风电单桩基础动力响应  

Dynamic response of offshore wind turbine monopile foundation leveraging integrated three-dimensional modeling of turbine and foundation

作　　者：陈志波[1] 刘海波 刘秋铭 谢永宁 曹光伟 曾旭明 潘生贵 CHEN Zhibo;LIU Haibo;LIU Qiuming;XIE Yongning;CAO Guangwei;ZENG Xuming;PAN Shenggui(Zijin School of Geology and Mining,Fujian-Taiwan Science and Technology Cooperation Base of Fujian Province on Intelligent Geo-Environmental Engineering,Fuzhou University,Fuzhou,Fujian 350108,China;Huadong Engineering(Fujian)Corporation Limited,Fuzhou,Fujian 350003,China)

机构地区：[1]福州大学紫金地质与矿业学院,福建省智能环境岩土工程闽台科技合作基地,福建福州350108 [2]华东勘测设计院(福建)有限公司,福建福州350003

出　　处：《福州大学学报(自然科学版)》2025年第2期193-200,共8页Journal of Fuzhou University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(52278335,52208335);福建省科技厅引导性基金资助项目(2021Y0004);华东勘测设计院(福建)有限公司科研项目(FH2019-KY006)。

摘　　要：针对海上风电单桩基础在风浪荷载作用下的受力分析方法尚不完善,以及桩、土参数对桩基动力响应的影响机制尚未明确的问题,提出塔架-桩基-土体三维一体化模型分析方法.以福建莆田某风电项目为工程背景,选用Davenport风速谱和P-M双参数波浪谱,运用自回归法和谐波叠加法分别模拟得到风荷载与波浪荷载;通过对海上风电单桩基础在风浪荷载下的动力响应进行计算,探究桩、土体参数对风浪荷载下桩基动力响应的影响规律.研究结果表明:随着桩径的增加,桩身弯矩逐渐加大,位移响应减小;随着桩基壁厚的增加,桩基在风浪荷载下的最大位移和弯矩响应逐渐减小;增大土体的弹性模量,桩基在风浪荷载下的位移和弯矩响应逐渐减弱.In response to the challenges of incomplete analytical methods for assessing the stress distribution in monopile foundations of offshore wind turbines under wind and wave loading,as well as the unclear mechanisms by which pile and soil parameters influence the dynamic response of the foundation,a three-dimensional integrated model analysis method for tower-pile-soil has been proposed.This paper is contextualized within the engineering framework of a wind power project situated in Putian,Fujian.The investigation employs the Davenport wind speed spectrum and P-M bimodal wave spectrum,wind and wave loads are simulated using the auto-regressive method and harmonic superposition method separately.The investigation delves into the dynamic response of offshore wind turbine single-pile foundations under wind and wave loads.Furthermore,the research delves into the impact of pile and soil parameters on the dynamic response characteristics of the pile foundation under wind-wave loading conditions.The findings reveal that an increase in pile diameter leads to a gradual amplification of bending moments within the pile shaft,coupled with a reduction in displacement response.As the thickness of the pile foundation wall increases,the displacement and bending moment responses to wind and wave loads gradually diminish.Elevated values of soil parameters such as elastic modulus is found to mitigate the displacement and bending moment responses of the pile foundation under wind and wave loads.

关 键 词：单桩式海上风机 风浪荷载 桩土参数 数值模拟 

分 类 号：TU47[建筑科学—结构工程]