Construction Technology of Super?wide Steel StructureTied Arch Bridge Adjacent To Operating Line
About the author:
China Railway 15th Bureau Group 2nd Engineering Co., Ltd., Shanghai 201714, China
Abstract:
The north side of the Jinhuigang Bridge is adjacent to the existing operating railway line, andthe south side is buried with natural gas pipelines, and it crosses the navigable Jinhuigang Channel, theconstruction environment is complex and the construction risk control is difficult. Combined with theconstruction environment and the characteristics of the bridge structure, the traditional constructionprocess of the whole beam first and arch later is optimized into separated beam first and arch later. Byreasonably arranging the underwater support piers and the arch supports, introducing the virtual assemblytechnology of steel members, optimizing the lifting point based on the calculation of the center of gravity,and adopting the rapid assembly technology of prefabricated components, the rapid installation andconstruction of the steel structure and concrete bridge deck of the main bridge of Jinhuigang Bridge isrealized, and the assembly efficiency and construction quality of the bridge are improved. Theengineering practice shows that the prefabricated and assembled components of Jinhuigang Bridge canmeet the requirements of bridge structure design, and the safety of adjacent operating railway line can beguaranteed during construction.
