塔吊对高柔桥塔风致振动响应的影响

Influence of Bridge Tower Crane on High-Flexible Bridge Tower Wind-Induced Vibration

在均匀流场和B类紊流场中测试不同风偏角下有无塔吊情况的塔顶和0.65倍塔高处桥塔的风致振动响应,对设计基准风速下的风振响应进行对比分析,研究塔吊以及流场类型对桥塔风致振动的影响。通过分析可知,塔吊和流场类型对桥塔风致振动的均值几乎没有影响,但会影响风致振动的方差。。

By testing wind-induced vibration response at the top of the tower and the point where is at 0. 65 times height of the tower in different wind angles,with tower crane or not in the uniform flow and B turbulent flow field respectively,the article studies the influence of the tower crane and different flow fields on the windinduced vibration of the bridge tower based on the comparative analysis of the wind-induced vibration response in the standard design of wind speed. The analysis shows that the tower crane and flow fields have little effect on the average value of wind-induced vibration of the bridge tower,but on the variance of wind-induced vibration of the bridge tower.