风力机塔筒起吊全过程力学特性研究  

Research on the mechanical characteristics of the whole process of wind turbine tower lifting

作　　者：王强兵 WANG Qiang-bing(Gansu Installation Construction Group Co.Ltd.,Lanzhou 730050,China)

机构地区：[1]甘肃省安装建设集团有限公司,甘肃兰州730050

出　　处：《兰州理工大学学报》2025年第2期60-64,共5页Journal of Lanzhou University of Technology

摘　　要：针对风力机塔筒拆卸过程稳定性问题,开展塔筒拆卸全过程的静力学和瞬态动力学研究.以2MW风力机第1段塔筒为研究对象,考虑吊钩位置和吊带数量的影响以及风载荷的作用,探究塔筒拆卸合理配置方案.利用有限元静力学求解吊钩位置和吊带数量不同时塔筒的位移和应力响应特性,并基于静力学进一步分析3根吊带起吊全过程塔筒的动力学特性.结果表明:静力学分析中,3根吊带起吊时塔筒等效应力全程小于2根和4根吊带,且等效应力变化幅度最小,3根与4根吊带起吊时塔筒变形具有相近的幅度和趋势;在考虑风载荷和塔筒惯性力的作用时,塔筒最大变形和最大等效应力均位于起吊加速阶段,且吊钩距离塔筒顶部法兰越近起吊加速阶段塔筒变形和等效应力变化的幅度越大,说明吊钩位置与塔筒加速度强相关;起吊加速阶段最大等效应力为223.26 MPa,相较塔筒材料许用应力313.6 MPa仍有较大裕度.The static and transient dynamics of the whole process of tower dismantling are investigated for the stability issues of the tower dismantling process of wind turbines.The first section of the tower of a 2 MW wind turbine is taken as the object of study,and the effects of the position of the hook,the number of slings are considered,and the role of the wind load is considered to explore the reasonable configuration of the tower dismantling program.In this study,the displacement and stress response characteristics of the tower drum under different hook positions and the number of slings are firstly solved by using finite element static analysis.Furthermore,the dynamic characteristics of the whole process of lifting the tower drum with three slings are investigated based on the results of the static analysis.The results show that,in the static analysis,the equivalent force of the tower tube with 3 slings is smaller than that with 2 and 4 slings,while also exhibiting the smallest variation of the equivalent force.The deformation response of the tower tube with 3 and 4 slings has similar variation and trend.Under the consideration of wind load and tower inertia force,the maximum deformation and equivalent force of the tower occur during the acceleration stage of lifting.Additionally,as the hook position moves closer to the top flange of the tower section,the variation amplitude of deformation and equivalent stress increases,demonstrating a strong correlation between hook position and tower section acceleration.The maximum equivalent stress during the accelerated lifting phase reaches 223.26 MPa,which is still a large margin compared with the permissible stress of 313.6 MPa in the tower.

关 键 词：塔筒 拆卸 静力学分析 瞬态动力学分析 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]