CHINA RAILWAY(SH:601390) Zhong Guo Xin Wen Wang·2026-01-16 08:26Core Viewpoint - The successful rotation of the 2×100 meter prestressed concrete single T-beam for the Shanghai-Nanjing-Hefei high-speed railway marks a significant engineering achievement in the construction of the bridge over the Beijing-Shanghai high-speed railway [1][3]. Group 1: Engineering Achievement - The T-beam, weighing 17,000 tons, is the largest span single T-beam for high-speed rail in East China, measuring 201.5 meters in length and 12.6 meters in width [3][5]. - The rotation of the beam was facilitated by a ball hinge precision positioning traction system, which allowed for a 260-ton pull to rotate the beam [3][5]. Group 2: Construction Technology - An intelligent monitoring system was employed to monitor the rotation posture and stress changes in real-time, ensuring that the axial deviation during the rotation was controlled within millimeter levels [5]. - After the rotation, the base of the beam was locked, and concrete was poured to integrate it with the beam structure [3]. Group 3: Project Significance - The Shanghai-Nanjing-Hefei high-speed railway is a crucial part of the eastern segment of the Chengdu-Chongqing high-speed railway and an important component of China's "Eight Vertical and Eight Horizontal" high-speed railway network [5]. - Upon completion, the project will establish a new rapid transit corridor between the Shanghai metropolitan area, Nanjing metropolitan area, and Hefei metropolitan area [5].