论文部分内容阅读
基于一轮毂高度为50.41 m的实际陆上风电塔结构,运用ANSYS有限元分析软件以及时程分析法对结构进行不同地震动作用下的非线性动力响应影响规律研究,并进一步探讨了结构在正常使用极限状态、塑性极限状态、残余位移条件控制下的水平位移与应力极限值,计算了响应的地震动临界峰值,对结构的整体抗震性能进行了评价.研究结果表明:板块边界型地震动对风电塔这种高耸柔性结构的动力响应影响最大,在极限值评价和结构抗震性能评价中占主导地位;该风电塔的正常使用极限状态为第一极限状态.
Based on the structure of a real onshore wind tower with a hub height of 50.41 m, ANSYS finite element analysis software and time-history analysis method are used to study the influence of nonlinear dynamic response of structures under different ground motions. Furthermore, Using the limit state, the plastic limit state and the horizontal displacement and the stress limit under the condition of residual displacement, the critical peak value of the earthquake response is calculated and the overall seismic performance of the structure is evaluated. The results show that: The towering flexible structure of wind power tower has the strongest influence on the dynamic response and plays a dominant role in the evaluation of the ultimate value and the seismic performance of the structure. The normal use limit state of the wind power tower is the first limit state.