According to media reports on July 11th， a box girder measuring 24.6 meters in length and weighing 542 tons was precisely installed on the first pier of the Chenjiagou Grand Bridge on the Chongqing section of the Xi’an-Chongqing High-Speed Railway. This milestone officially marks the commencement of box girder installation work on the Chongqing section， laying a solid foundation for the entire line’s timely completion and operation.
The Xi’an-Chongqing High-Speed Railway is a crucial component of China’s “Eight Vertical and Eight Horizontal” high-speed rail network， forming a vital link in both the Beijing-Kunming corridor and the Baotou-Haikou corridor. As explained by a representative from Beijing-Kunming High-Speed Railway Xikun Co.， Ltd.， the Kangyu section of the Xi’an-Chongqing High-Speed Railway originates from Ankang West Station， passing through Ankang City in Shaanxi Province， Chengkou County in Chongqing Municipality， Dazhou and Guang’an cities in Sichuan Province， and Hechuan District and Beibei District in Chongqing Municipality， ultimately connecting to Chongqing West Station.
To ensure the timely achievement of all construction objectives， Beijing-Kunming High-Speed Railway Xikun Co.， Ltd. has mobilized all participating units to actively implement new development concepts， emphasizing a model-driven approach and the demonstration of high-quality construction， while vigorously promoting intelligent construction methods.
The Chongqing section of the Xi’an-Chongqing High-Speed Railway， undertaken by China Railway Fourteenth Bureau Group， has a total mainline length of 26.657 kilometers. The project encompasses the prefabrication and installation of 3 tunnels， 28 bridges， 29 roadbeds， and 327 box girders. Since commencing construction in December 2022， the project has progressed smoothly. Currently， the roadbed earthwork and stonework have exceeded 80% completion， bridge construction has surpassed 85% completion， and tunnel construction has reached over 75% completion.
During the construction process， the project’s girder yard has strictly adhered to safety control requirements for operations adjacent to existing lines， developing detailed emergency response plans. By establishing a “Smart Girder Yard” platform， the project has achieved intelligent management of critical processes such as girder transportation， unloading， and erection. This initiative has significantly enhanced risk control and ensured that construction remains safe and manageable.
