At 11:30 a.m. on March 1, 2022, with the order of the on-site commander, the first box girder, which is 32.6 meters long, 12.6 meters wide, 3.035 meters high, and weighs 800 tons, moves in parallel and is stably erected on the bridge pier. , the Jingjing Railway 1st bid project Hejiachang Bridge, which was built by China Railway 11th Bureau Group, officially began to erect beams, and the openings of Hejiachang Bridge and Longquanhe Bridge were all opened. So far, the construction of Jingjing Railway has opened a new node, marking the official entry of the entire line into the superstructure construction stage, laying a solid foundation for the Jingjing Railway to be completed and opened to traffic as scheduled.

According to Yang Haiqiao, manager of the Jingjing Railway JJSG-1 bid project department, the Jingjing Railway JJSG-1 bid section has a total of 657 box girder holes, and 73 holes have been prefabricated. It is planned to complete the prefabrication and erection tasks of the box girder early next year. With the start of the beam erection process, the construction of the bridge deck system and ballastless track in Section 1 will be gradually launched, and the construction of the main railway project will be further promoted.

Jingjing Railway 1 standard main line is 24.5 kilometers long, and the total length of bridges is 21.3 kilometers, of which Jingmen Bridge is 19 kilometers long, which is a major and difficult control project for the whole line. In addition, it also includes 3.2 kilometers of roadbed, ballastless ballast bed construction and box girder prefabrication in the bidding section. and erection, etc.

The project has the difficulties of tight construction period and high safety risks in the construction of large-span continuous beams. Since its launch in 2021, China Railway Eleventh Bureau has overcome the pressure of epidemic prevention and control, construction and production, and has focused on building this line into a model project of high-speed rail in the province, and has made every effort to promote railway construction.

The Jingjing railway line starts from Jingmen City in the north and ends at Jingzhou City in the south. It connects the east-west high-speed railway along the Yangtze River, and runs through the Hunan high-speed railway from the north to the south. The designed speed is 350 kilometers per hour. It is an important vertical and eight horizontal high-speed railway network in China. (Ning) an important part. After the project is completed, it will not only shorten the temporal and spatial distance between Jingmen and Jingzhou, but also promote the development of the Yangtze River Economic Belt. Editor/He Yuting