桁架式海上风电支撑结构力学性能研究  

RESEARCH ON THE MECHANICAL BEHAVIOR OF TRUSS-TYPE SUPPORTING STRUCTURES FOR WIND TURBINE

作　　者：练继建[1,2] 刘红波[1,2] 陈志华[1,2] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]滨海土木工程结构与安全教育部重点实验室(天津大学),天津300072

出　　处：《工业建筑》2015年第8期160-165,共6页Industrial Construction

基　　金：国家高技术研究发展计划(863计划)资助项目(2012AA051702);国家国际科技合作专项资助项目(2012DFA70490)

摘　　要：单机功率高、风机尺寸大、轮毂高度高已成为海上风电发展的主要特点,而锥筒式塔架结构由于其局部易屈曲、施工难度大和整体刚度弱等缺点,已不能满足当前海上风电的发展要求,因此提出一种桁架式海上风电支撑结构,并对其基本静力性能、动力性能和风振效应进行分析研究,结果表明,在用钢量相同的情况下,桁架式海上风电支撑结构的水平承载力比锥筒式提高46%以上,风振系数降低19.3%以上,桁架式海上风电支撑结构的力学性能优于锥筒式海上风电支撑结构。The high single power,large wind leaf size and high hub height have been the main features of the offshore wind turbine. Due to the easy local buckling,difficulty of the construction and the lateral low rigidity,cone type supporting structures cannot meet the development requirements of offshore wind turbines. Therefore,a truss type supporting structure was presented to overcome the weakness of the cone type supporting structures. Its static properties,dynamic properties and wind-induced vibration effect were analyzed,and following conclusions were obtained： under similar steel consumption,the horizontal bearing capacity of truss type supporting structure was 46%higher than that of cone type supporting structures,and wind-induced vibration factor was 19. 3% lower than that of cone type supporting structures. Therefore,the structural property of cone type supporting structures is better than the cone type supporting structures.

关 键 词：海上风电 支撑结构 桁架式 锥筒式 结构性能 

分 类 号：TU311[建筑科学—结构工程]