跨江巨弓顺利合龙 将稳稳托举风驰电掣

Core Insights - The Tuojiang Grand Bridge, a key project of the Chengdu-Chongqing High-Speed Railway, successfully completed its main beam closure on November 10, marking a significant milestone in its construction [5][8] - The Chengdu-Chongqing High-Speed Railway is expected to be completed and operational by the end of 2027, with a maximum operational speed of 400 km/h, earning it the title of "the fastest high-speed railway on land" [5][9] Innovation in Design - The bridge features a world-first structural design that combines the large span of an arch bridge with the stability of a beam bridge, allowing for a unique "no thrust" self-balancing structure [6][7] - The main beam closure utilized a tensioning method, where the two sides of the bridge were gradually pulled together, requiring 12 hydraulic jacks exerting a force of approximately 5400 tons [7] Construction Techniques - The construction team employed advanced digital technologies for precise closure, achieving a positioning error within millimeters, likened to "embroidery in the air" [8] - A monitoring information system was developed to track critical data such as displacement and tension during the construction process, ensuring real-time adjustments and high precision [8] Project Progress - Following the bridge's closure, track laying is set to begin in May next year, indicating a significant acceleration in the overall construction of the Chengdu-Chongqing High-Speed Railway [9] - The railway line, part of China's "eight vertical and eight horizontal" high-speed rail network, spans 292 kilometers and connects key urban areas in Sichuan and Chongqing [9]