58分钟精准转体 耒阳万吨大桥跨越京广铁路

Core Viewpoint - The successful completion of the bridge rotation in Yiyang marks a new phase of "refined and intelligent" traffic construction in the region, enhancing connectivity and reducing congestion [1][2] Group 1: Project Details - The bridge on Wuyuan Road spans the Beijing-Guangzhou Railway and was rotated 68.8° in 58 minutes during a scheduled maintenance window [1] - The bridge features a dual six-lane design with a width of 31.6 meters and a designed speed of 40 km/h, aimed at alleviating congestion on National Highway 107 [1] - The bridge's railway section is 202 meters long, with a T-shaped structure length of 124 meters, utilizing an innovative "construction first, rotation later" method [1] Group 2: Construction Techniques - The construction site is located in a karst geological area, necessitating high safety and precision standards [1] - The construction team employed advanced techniques such as pre-drilling to ensure stability and safety, akin to performing a CT scan of the underground conditions [1] - During the rotation, a fiber optic sensing system and Beidou positioning technology were used to monitor and control the process, ensuring smooth operation without disrupting railway services [1] Group 3: Future Plans - Following the rotation, the next steps include closing the hinge and completing the mid-span by January 20, 2026, with plans to open the bridge to traffic by January 31, 2026 [2] - The project aims to create a "5-minute commuting circle" between the new and old urban areas of Yiyang, facilitating regional industrial integration and improving residents' quality of life [2]