摘要
首先对合肥电视塔进行了动力特性分析,分析表明该塔具有明显的鞭梢效应和振型退化的特点,计算分析时,应考虑高振型的影响。其次分别输入El-Centro波(N-S)、Taft波和人工合成的合肥波,通过Newmark-β法对合肥电视塔进行地震响应分析,分析结果表明,结构的地震反应是多振型的组合。
First of all, stochastic vibration analysis of Hefei TV Tower came to a conclusion that it has the feature-branch effect and vibration mode deterioration, and the influence of higher order mode shapes should be taken into account. Then, the seismic response of Hefei TV Tower under the El-Centro,Taft and simulated earthquake wave of Hefei excitations was performed using the Newmark-β method, and the result shows that the seismic responses of the tower are combined with the multi-vibrational modes.
出处
《工程抗震与加固改造》
2006年第5期29-34,54,共7页
Earthquake Resistant Engineering and Retrofitting
关键词
电视塔
高耸结构
地震响应
鞭梢效应
television tower
high- rise structure
seismic response
feature- branck effect
