考虑建设角度的植入式嵌岩导管架风机基础风振响应分析  

Dynamic Response Analysis of Wind Load of Embedded Three-pile Jacket Foundation under Different Construction Angles

作　　者：侯斯嘉 孙焕锋 胡雨承 苏凯[3,4,5] HOU Sijia;SUN Huanfeng;HU Yucheng;SU Kai(PowerChina 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;Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering(Ministry of Education),Wuhan University,Wuhan 430072,Hubei,China;Hubei Provincial Key Laboratory of Water System Science for Sponge City Construction,Wuhan University,Wuhan 430072,Hubei,China)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [2]浙江华东工程咨询有限公司,浙江杭州311100 [3]水资源工程与调度全国重点实验室(武汉大学),湖北武汉430072 [4]武汉大学水工岩石力学教育部重点实验室,湖北武汉430072 [5]海绵城市建设水系统科学湖北省重点实验室(武汉大学),湖北武汉430072

出　　处：《水力发电》2024年第11期81-86,共6页Water Power

摘　　要：基于广西防城港海上风电三桩导管架基础结构原型数据与地勘资料,采用ABAQUS建立相关有限元模型,选取3种建设角度施加风荷载,分析了结构整体的应力、位移响应情况。研究结果表明:不同建设角度下,结构最大应力均位于法兰连接段,且建设角度与主风向呈45°时最危险;建设角度与主风向平行时导管架应力较大,桩基础的应力较小且桩顶应力水平最大;嵌岩部分桩基础水平位移几乎可以忽略,导管架的2层横杆交界处水平合位移最大,水平方向位移最大值出现在法兰连接段顶部。工程建设中应该避免三桩导管架基础建设角度与主风向平行或垂直,45°方向建设相对更安全。Based on the prototype data and geological exploration data of the three-pile jacket foundation structure of Fangchenggang offshore wind power plant,the relevant finite element model is established by using ABAQUS,and the stress and displacement response of the structure are analyzed by applying wind loads from three construction angles.The results show that,(a)under different construction angles,the maximum stress of the structure is located in the flange connection section,and the most dangerous is when the construction angle is 45°with the main wind direction;(b)when the construction angle is parallel with the main wind direction,the jacket stress is larger,the pile foundation stress is smaller,and the pile top stress level is maximum;and(c)the horizontal displacement of rock-socketed pile foundation can be almost ignored,and the maximum horizontal displacement at the junction of the two-layer cross bar of jacket is at the top of the flange connection section.In engineering construction,the construction angle of three-pile jacket foundation should be avoided parallel or vertical to the main wind direction,and the construction direction of 45°is relatively safer.

关 键 词：海上风机 导管架基础 风荷载 动力响应 有限元分析 

分 类 号：TM614[电气工程—电力系统及自动化] TU476[建筑科学—结构工程] TU391[建筑科学—土工工程]