双塔结构架空连体舒适度分析

Vibration Service Ability Analysis on the Sky-Bridge of the Twin-Tower Connected Structure

采用有限元软件Ansys分析了钢连廊的自振特性,研究钢连廊与塔楼结构间不同连接方式对其自振特性的影响,分析人行荷载对钢连廊结构竖向振动和共振响应的影响,参考国内外关于人行桥舒适度的评价标准,对双塔结构架空连体进行舒适度评价。分析结果表明,刚接和铰接形式都可以满足舒适度要求,建议采用铰接形式;与此同时,人行荷载和人行走速度快慢产生的频率也会影响舒适度。

The paper analyzes the vibration characteristics of the steel corridor,studies the effects of different vibration characteristics coming from different connections between the steel corridor and the tower structure,and analyzes the effects of the vertical vibration and the resonance response of the steel corridor that is caused by the loads when people walk through by the finite element software Ansys in this paper. By referring to the footbridge＇s vibration serviceability evaluation criteria,this article analyzes the vibration serviceability of the sky-bridge which is connecting the twin-tower structure as well. The results indicate that both rigid and hinge connections can meet the vibration serviceability＇s requirement. The pedestrian loads and the frequency caused by the walking speed can also affect the vibration serviceability.