通甬高铁首座斜拉桥主塔封顶

Core Viewpoint - The successful topping of the main tower of the Zhangjiagang River cable-stayed bridge marks a significant milestone in the construction of the Nantong to Ningbo High-Speed Railway (Tong-Ning High-Speed Railway), laying a solid foundation for the subsequent completion of the entire bridge [1][2] Group 1: Project Overview - The main tower of the cable-stayed bridge, which is the first to be topped along the Tong-Ning High-Speed Railway, has a height of 49.25 meters and a total length of 417.7 meters [1] - The bridge design features a single-tower, double-cable prestressed concrete structure, with an H-shaped cross-section for the main tower and a prestressed concrete main beam [1] Group 2: Construction Achievements - The project team completed the entire construction process from pile foundation to tower topping in just 15 months, overcoming challenges such as tight schedules and complex structures [2] - Advanced technologies such as intelligent safety monitoring, 3D modeling, and millimeter-level positioning were employed to ensure construction safety, precision, and quality [2] Group 3: Future Steps - Following the topping of the main tower, the project will transition to the installation of cable stays and the cantilever pouring of the main beam, entering a critical phase of construction [2]