摘要
建立了合肥塔的杆系和梁系三维空间有限元模型 ,进行了合肥塔的动力特性分析并比较了 2种模型的差异。随后形成二维串联多自由度动力模型 ,模拟了合肥塔顺风向脉动风荷载 ,并进行风振反应分析 ,结果表明合肥塔顶部鞭梢效应极为明显 ,高振型对合肥塔风振反应的影响不可忽略。
Two three dimensional finite element models of Hefei TV tower are constructed respectively from linear elastic truss elements and beam elements. The dynamic characteristics of Hefei TV tower are obtained and the differences between two models are analyzed. A two dimensional lumped mass dynamic model is then reduced from the three dimensional model and along wind loading is digitally simulated and the dynamic responses of wind excited tower are executed. The results indicate that the whiplash effect is obvious and high mode shapes have important influence on the wind induced responses of Heifei TV tower.
出处
《武汉理工大学学报》
CAS
CSCD
2004年第2期23-26,共4页
Journal of Wuhan University of Technology
基金
国家自然科学基金 ( 5 0 0 380 10 )
关键词
合肥电视塔
三维有限元模型
串联多自由度模型
风振反应
Heifei TV Tower
three dimensional finite element models
two dimensional lumped mass model
wind induced responses
