武汉火车站钢结构抗振幕墙施工技术

Construction of the Steel Anti-vibration Curtain Wall in Wuhan Railroad Station

武汉火车站是国内首座采用"桥建合一"结构形式的高铁站,为保证幕墙全使用期的安全性,在设计上采用抗放结合的抗振设计理念。高速列车轨道梁底部玻璃幕墙根据消减竖向振动要求,采用黏弹性阻尼机构,将竖向机械动荷载转化为竖向摩擦力。东西广厅钢结构抗振玻璃幕墙系统采用双层受力系统,内层主体钢结构形成一个整体的框架,使幕墙在振动过程中基层钢结构整体位移。顶部设置黏弹性阻尼机构或双铰摇臂机构吸收振动能量,最大限度地减少主体结构的振动对玻璃幕墙的影响,从而实现幕墙抗振的目的。

Wuhan Railroad Station used the structure of combination of bridge and building firstly.In order to assure the safety of curtain wall,the anti-vibration design idea of anti-put combination was introduced.Viscoelastic damping was used on the bottom of express track beam to transform the dynamic loads into vertical friction.Double-layer loading glass curtain wall was used in the hall.The internal main steel structures formed integral frame,which made integral displacement of steel structures when curtain wall vibration.And viscoelastic damping or twisted rocker was set on the top to absorb vibration energy,which could induce the effects of vibration on glass curtain wall largely.