Southeast Asia Information Port News (www.dnyxxg.com) – On the 15th, reporters learned from the Zhejiang Maritime Safety Administration that a 626-ton steel beam was precisely hoisted to its designated position in Hangzhou Bay, marking the successful erection of the first steel beam for the northern channel bridge of the Hangzhou Bay Cross-Sea Railway Bridge. This represents a significant milestone in the bridge's construction.
The Hangzhou Bay Cross-Sea Railway Bridge is a key project of the newly built Nantong-Ningbo High-Speed Railway (hereinafter referred to as the Tongyong High-Speed Railway). It includes three channel bridges (north, central, and south) and approach bridges spanning the dike, the sea, and shallow waters. With a total length of 29.2 kilometers, it adopts a double-track ballastless track design for a speed of 350 kilometers per hour and is currently the world's longest and highest-standard high-speed railway cross-sea bridge under construction.
The North Channel Bridge is a 450-meter main span steel box girder-steel truss composite cable-stayed bridge with two main towers (No. 8 and No. 9). The bridge is 932.7 meters long and is currently the world's largest span ballastless track cable-stayed bridge under construction. Its design and construction challenges are rare among similar bridges in China.
To ensure construction safety, the Jiaxing Maritime Safety Administration has established a comprehensive support mechanism of "data + precision + drills." This includes accurately predicting work windows, implementing simulated lifting for each beam, and utilizing VTS, drones, and patrol boats for full escort, ensuring comprehensive control over the lifting process.
The Hangzhou Bay Cross-Sea Railway Bridge is expected to be completed and open to traffic in 2027. This will not only end the history of Haiyan County, Zhejiang Province, without railway access, but will also significantly reduce travel time between cities in the Yangtze River Delta, helping to build a "one-hour transportation circle" and further promoting regional coordinated development. (End)
