海上风力塔架结构模型振动台试验研究  

SHAKING TABLE TEST OF OFFSHORE WIND TURBINE SUPPORTING TOWER

作　　者：申民宇 祝磊 贾军波[1,2,3,4] 李爱群 SHEN Min-yu;ZHU Lei;JIA Jun-bo;LI Ai-qun(Beijing Advanced Innovation Center for Future Urban Design,School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Beijing Higher Institution Engineering Research Center of Structural Engineering and New Materials,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Multi-Functional Shaking Tables Laboratory,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]北京未来城市设计高精尖创新中心,北京建筑大学土木与交通工程学院,北京100044 [2]北京建筑大学工程结构与新材料北京市高等学校工程研究中心,北京100044 [3]北京建筑大学北京市建筑结构与环境修复功能材料重点实验室,北京100044 [4]北京建筑大学大型多功能振动台阵实验室,北京100044

出　　处：《工程力学》2022年第2期85-95,共11页Engineering Mechanics

摘　　要：目前风力发电技术发展迅速,风电塔架结构作为风机的主要支撑结构,其在地震作用下的安全性十分重要。对于此种三脚架结构还未进行过振动台试验研究,所以该文利用地震模拟振动台试验的方法对海上风力发电塔三脚架结构1∶20比例模型进行了系列的试验,研究了模型结构的动力特性,以及在加速度峰值0.3 g、0.6 g和0.9 g作用下结构的地震反应。试验模型分为在三脚架桩基础高1.3 m处设置支护以及撤掉支护(模拟桩基础失效)两种情况。相较于设置支护的情况,撤掉支护后模型结构的加速度动力响应略有减小,X、Y两方向的峰值加速度下降幅度分别为9.87%和5.40%。此外,结合有限元软件ABAQUS对模型结构进行弹塑性时程分析,并将模拟结果与试验结果进行对比分析,两者结果基本一致,起到了相互验证的作用,并为该原型结构的弹塑性时程分析提供了参考。At present,the wind power generation technology develops rapidly.As the main supporting structure of the wind turbine,the safety of the tower structure is very important under the action of earthquake.Since the behavior of this kind of tripod structure has not yet been investigated through shaking table test,a 1∶20 scaled model of offshore tripod supporting structure was tested through seismic shaking table.Subjected to a series of seismic ground motions with three peak acceleration levels of 0.3 g,0.6 g and 0.9 g,the dynamic characteristics of the model structure and the seismic response were studied.Two support condition sceneries of the foundation for the test model were considered:with supports at 1.3 m high of each pile foundation,and removal of the supports(simulated pile foundation failure).Compared with the case with the foundation support,the dynamic acceleration response of the structure after the removal of the support was slightly reduced,and the decrease in the amplitude of peak acceleration in X and Y directions was 9.87%and 5.40%,respectively.In addition,finite element analysis by ABAQUS was performed to analyze the elastoplastic response of the structure,and the simulation results were compared with the test results.Good agreement was observed between the two results,which validates the results of both the finite element analysis and the shaking table test,and provides a reference for the elastoplastic time history analysis of the prototype structure.

关 键 词：风力发电塔 三脚架结构 振动台试验 动力特性 有限元分析 

分 类 号：TM315[电气工程—电机]