海上风机Tripod基础结构的控制工况与控制荷载方向分析  

Study on Control Condition and Control Load Direction for Tripod Foundation Structure of Offshore Wind Turbine

作　　者：明小燕[1] 王滨[2] 李昕[1] 徐建强[2] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024 [2]中国水电顾问集团华东勘测设计研究院,浙江杭州310014

出　　处：《水电能源科学》2013年第11期241-244,共4页Water Resources and Power

基　　金：辽宁省创新团队计划基金资助项目(LT2010023);中国水电顾问集团华东勘测设计研究院院立项课题基金资助项目(KY120228-03-07)

摘　　要：针对海上风机Tripod基础结构的特性,采用有限元软件SACS,结合实际海洋水文数据,选择六组极端工况和两组正常使用工况研究了海上风机Tripod基础结构的控制工况及控制荷载方向,并与已有研究成果进行比较。结果表明,杆件应力、节点冲剪、桩应力校核对应的控制工况为极端工况ULS_3,地基承载力、基础结构沉降量、法兰处转角校核对应的控制工况为正常使用工况SLS_1,Tripod基础结构的控制荷载作用方向为-25°,因此对海上风机基础结构简单地进行极端工况下单个荷载方向的静力分析并不能充分反映风机结构的静力特性,应根据基础结构的构造形式、所处的海洋环境,对海上风机结构进行全方向环境荷载输入的静力分析。Aiming at the characteristics of Tripod foundation structure for offshore wind turbine, finite element soft- ware SACS is used to estimate control conditions and load of offshore wind turbine Tripod foundation structure. Results have been compared with present research achievements in six extreme conditions and two normal conditions. It shows that in the extreme condition of ULS_3, the member stress, joint shearing stress and foundation stress has maximum val ue; the capacity of foundation, the settlement of foundation and the rotation of flange has maximum value in normal con dition of SLS1. And also it shows that for estimation of Tripod structure load direction of -25° should be considered. Therefore, it can conclude that for static analysis of Tripod foundation structure of offshore wind turbine in single load di- rection can not fully reflect the static characteristics of the structure. In order to overcome this shortcoming, it should consider environmental loads in all directions for static analysis of the structure according to its type of structure and envi ronmental conditions.

关 键 词：海上风机 Tripod基础结构 控制工况 控制荷载方向 

分 类 号：TK8[动力工程及工程热物理—流体机械及工程]