渝 (重庆 )邻 (水 )高速公路桥顺利合龙 ,开创了国内八字型钢架拱桥竖转合龙施工的先例。该桥全长 5 8.2 66m ,净跨距为 40m ,该桥最大的特点是施工工艺新颖 ,主要有 :以直代曲 ,立柱施工 ,竖转到位 ,钢管合龙 ,合龙后封铰。其优点是在竖转状态下施工 ,既保证了结构的稳定性和 Chongqing (Chongqing) o (water) highway bridge smoothly, pioneering the domestic eight-character steel arch bridge vertical switch construction precedent. The bridge length of 5 8.2 66m, net span of 40m, the bridge is characterized by the most innovative construction techniques, mainly include: straight song, column construction, vertical rotation in place, the steel pipe closure, closing the closure after the closure. Its advantage is in the vertical rotation state of construction, both to ensure the stability of the structure and