After 1 hour and 30 minutes of rotation, the last continuous beam of the Wuhan-Dawu Expressway (referred to as Wuhan-Dalian Expressway) cross-rail overpass was successfully docked, marking the first six-turn project on the same bridge in China to achieve two-way connectivity.
The Wuhan-Dalian high-speed cross-railway overpass spans 9 existing railway lines, including the Beijing-Guangzhou railway up and down passenger lines and freight lines, Wuhan North marshalling station, and Xingang up line.
"In order to reduce the impact on the existing railway business lines, the project department adopts the variable-section beam swivel construction technology, that is, the beam body construction is carried out parallel to the railway first, and then the swivel construction is carried out to complete the bridge closure." China Railway Bridge Bureau Wuda Expressway and Railway Li Xiaoqi, chief engineer of the first bid project of the intersection project, introduced that the main bridge piers of the Wuhan-Dalian high-speed cross-railway overpass are located between the railway lines. change.
On that day, the swivel construction was carried out on the last box girder swivel of the project. It spanned three operating railway lines: the Wuhan North Handan departure line, the Wubei downlink departure line, and the Wubei downlink ring-fat line. There are six swivel box girders. The hanging basket construction box girder with the highest height of the transfer body, the highest traffic density across the line, and the closest to the railway catenary.
The Wuhan-Dalian Expressway Cross-Railway Overpass is invested and constructed by Wuhan Communications Engineering Construction Investment Group Co., Ltd., constructed by Wuhan Wuhan Railway Engineering Project Management Co., Ltd. The key construction project determined by the road layout is also an important channel for the integrated development of Han Xiao integration. After completion and operation, it will further open up the main artery in the north of Wuhan and improve the Wuhan expressway network system.
(Zou Hao, Yuya, Juan and Meiyuan)
Responsible editor: [Luo Pan]