开放环境下城市高架现浇混凝土箱梁的施工策划及社会交通疏解

Construction Proposal for Urban Elevated In-Situ Concrete Box Girder Under Open Environment and Social Traffific Relief

昆山市中环快速化改造工程S-1标范围内的高新区立交段面临工程路线长、体量大、组织协调要求高、场地开放、周边环境复杂等难点。结合G312国道与江浦路交叉路口不封闭施工实例,对其施工及交通疏解进行了总体阐述。通过采取分阶段翻交、利用已完成立交的支架体系合理设置门洞,在保证施工质量的同时,尽量确保既有道路的通行能力,圆满完成了施工。

The project of high-tech zone interchange section, within S-1 specified zone of Kunshan city middle ring expressway reconstruction project had many difficulties including long engineering distance, large volume, high requirements of organization and coordination, and complicated surrounding environment. This paper gives an overall introduction of construction scheme based on the open intersection construction of G312 national highway and Jiangpu road. Through phase-divided reconstruction and reasonable opening layout based on the scaffold supporting system of the existing interchange, the construction was a complete success, which ensured good construction quality and the capacity of the existing highway.