基于时域法的不同塔架风力机抗台风分析  

Typhoon-resistance Analysis of Wind Turbines with Different Towers Based on Time-domain Method

作　　者：刘新喜[1] 邓宗伟[2] 高乾丰[3] 

机构地区：[1]长沙理工大学土木与建筑学院,湖南长沙410114 [2]湖南城市学院土木工程学院,湖南益阳413000 [3]湘潭大学土木工程与力学学院,湖南湘潭411105

出　　处：《湖南大学学报（自然科学版）》2017年第11期81-87,共7页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(51378082);湖南省教育厅科学研究重点项目(14A024)~~

摘　　要：为探讨不同塔架形式风力机的抗台风性能,基于Abaqus有限元软件建立4种不同塔架形式的风力机一体化模型,用自回归(AR)法对脉动风时程进行模拟,分别进行了模态分析和台风时程分析.结果表明,风轮和机舱对风力机自振频率的影响较大;钢筋混凝土锥筒塔架的最大顺风向位移随台风风速的增加呈平缓线性增加趋势,而其他3种塔架的位移随风速的增加表现为非线性增加.钢管格构式塔架为轻型柔性结构,其风载响应最为显著,钢锥筒塔架次之,而钢筋混凝土塔架因具有较大的自重和刚度,其位移响应最小,抗风性能较好.In order to investigate the typhoon resistance of wind turbines with different towers,four wind turbine integration models with different forms of towers were built by Abaqus finite element software and Autoregressive （AR） model was used to simulate the fluctuating wind for modal analyses and typhoon time history analyses. The results show that the natural frequencies of wind turbines are greatly affected by wind rotor and nacelle. When the typhoon wind speed increases,the maximum along wind displacement of the steel conical cylindrical tower climbs linearly,while those of the other 3 towers show a significant nonlinear growth. As a lightweight flexible structure,the steel tube lattice tower exhibits the greatest dynamic response,and the steel conical cylindrical tower exhibits the second one. Because of the considerable stiffness and weight,the displacement response of the reinforced concrete conical cylindrical tower is the minimum,and the typhoon resistance capability is the best.

关 键 词：风力机塔架 时域分析 脉动风模拟 台风荷载 动力响应 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]