336m高钢结构电视塔模态参数实测与分析

Measurements and Analysis of Model Parameter of Broadcast and Television Steel Tower

大型多功能钢结构电视塔的模态参数无论对结构抗风还是抗震都具有重要的意义 ,但是在实际复杂工程中对结构模态参数的影响因素较多 ,理论计算有时难以与实际工程完全一致 .为此 ,详细介绍了黑龙江 336m高钢结构电视塔实测试验所用的仪器设备、人工激振方法、信号采集及结构模态分析等方法 。

In this paper the acceleration history response of 336 m height Heilongjiang broadcast and TV steel tower was measured under artificial excitation.Then the measurement and the analysis process of the data are presented.By analyzing those data the frequencies,dynamic modes and damping coefficients of the tower are identified.These parameters are very useful during the dynamic analysis of the tower.