海上风机支撑结构疲劳性能试验研究  

Fatigue Testing of Support Structure for Offshore Wind Turbine

作　　者：李恒军 杨敏冬 刘沙 周德棕 王大龙 LI Hengjun;YANG Mindong;LIU Sha;ZHOU Dezong;WANG Dalong(China Datang Marine Energy Industry Co.,Ltd.,South China Sea Business Department,Shantou 515000,China;China Energy Engineering Group Guangdong Electric Power Design Institute Co.,Ltd.,Guangzhou 510663,China;South Offshore Wind Power Joint Development Co.,Ltd.,Zhuhai 519000,China)

机构地区：[1]中国大唐集团海洋能源产业有限公司南海事业部,汕头515000 [2]中国能源建设集团广东省电力设计研究院有限公司,广州510663 [3]南方海上风电联合开发有限公司,珠海519000

出　　处：《南方能源建设》2020年第3期89-94,共6页Southern Energy Construction

基　　金：广东省自然科学基金项目“风浪耦合作用下海上风机支撑结构疲劳评估技术研究”(2014A030310194)。

摘　　要：[目的]针对海上风机支撑结构的疲劳问题,进行了外加强环过渡段结构疲劳性能的试验研究。[方法]采用简化的支撑结构1/5缩尺模型进行了静力与疲劳试验,获得了模型的热点应力和疲劳寿命;并根据DNV的海上风机规范,采用不同类型单元对试验模型进行了有限元分析和疲劳寿命估算,将规范方法的计算结果与试验进行了比较。[结果]结果表明:试验结果和规范方法之间的差异主要源于S-N曲线的选取。[结论]最后根据试验数据,在DNV规范的基础上给出两种改进的疲劳校核方案,可为实际应用提供指导。[Introduction]In view of the fatigue problem of support structure for offshore wind turbine,fatigue performance of transition piece with external stiffening ring was studied.[Method]Static and fatigue tests of A1/5 scale simplified support structure model were carried out to obtain their hot spot stress and fatigue life.Finite element analysis for the test model was conducted with different element type according to DNV rules.Fatigue damage obtained from experimental tests was compared with that calculated by numerical simulations.[Result]The results show that the main discrepancy between test results and specification methods is the selection of S-N curves.[Conclusion]Finally,on the basis of experimental data and DNV rules,two different methods for evaluating the fatigue damage of transition piece are given.This work provides some guidance for further application.

关 键 词：海上风电 疲劳试验 外加强环管节点 支撑结构 

分 类 号：TK89[动力工程及工程热物理—流体机械及工程] TU476[建筑科学—结构工程]