异形拱塔低位竖转+平转在跨石长拱承斜拉桥的应用

On application of low post vertical-rotationplus horizontal-rotation of special-shaped arch towers

通过常益长铁路跨石长铁路拱承斜拉桥对拱塔施工的应用,提出异形拱塔采用低位竖转+平转施工工艺,顺利完成了世界首座高速铁路拱承斜拉桥拱塔施工。异形拱塔低位竖转+平转在跨石长拱承斜拉桥的应用,解决了人员无需进入营业线即可完成施工等问题,降低了安全风险,为大跨度跨越铁路施工探索出更加适用、便捷,施工更加安全的整套施工方法。

According to the application of the arch tower construction in the arched cable-stayed bridge in Changde-Yiyang-Changsha High-Speed Railway crossing Shimen-Changsha Railway,the paper points out the construction craft of the low post vertical-rotation plus horizontal-rotation of special-shaped arch towers,successfully accomplishes the first arched cable-stayed bridge on high-speed railway in the world,indicates the application of the technique can solve the problem in which the construction can be completed without personnel attendance,and lower the safety risks,so as to explore a more practical and more convenient construction with safe and easy construction method for the construction of the large-span crossing railways.