潍宿高铁临沂段首个百米以上转体桥成功转体

Core Points - The successful completion of the first over 100-meter rotating bridge on the Linyi section of the Weishui High-speed Railway marks a significant milestone in the project, allowing for subsequent beam installation and ballastless track construction [1][3] Group 1: Project Overview - The Weishui High-speed Railway is a critical segment of the Beijing-Shanghai High-speed Railway auxiliary corridor, with a total length of 398.296 kilometers and a design speed of 350 kilometers per hour [3] - The section constructed by China Railway 12th Bureau spans 34.034 kilometers and includes 14 continuous beam constructions, with the rotating bridge being a key challenging control project [3] Group 2: Construction Methodology - To minimize the impact of bridge construction on the existing Daylan Expressway, the project team employed a "build first, rotate later" method, where continuous beams were cast on both sides of the expressway before being rotated into position [4] - The rotation process is likened to a ballet dancer, with the bridge body rotating around a central point to achieve precise alignment [4] Group 3: Regional Significance - The Weishui High-speed Railway is an important part of the regional transportation network, connecting with other high-speed rail lines and significantly enhancing travel convenience for residents in the Yimeng Mountain and Su Bei revolutionary areas [6] - The completion of the railway is expected to greatly facilitate regional economic and social development, as well as ecological protection and high-quality development in the Yellow River basin [6]