杭州湾跨海铁路桥建设提速 助力"轨道上的长三角" 编辑：熊思怡 广告等商务合作，请点击这里 本文为转载内容，授权事宜请联系原著作权人 中新经纬版权所有，未经书面授权，任何单位及个人不得转载、摘编或以其它方式使用。 中新网杭州10月10日电(奚金燕)10月10日凌晨，在世界三大强潮海湾之一的杭州湾海面上，最后一方混 凝土顺利浇筑入模，标志着杭州湾跨海铁路桥南航道桥首个下横梁浇筑圆满完成，南航道桥南主塔由下 塔柱施工转入中塔柱施工阶段，为全桥后续建设奠定了基础。 杭州湾跨海铁路桥是新建南通至宁波高速铁路(以下简称通甬高铁)的控制性工程，包括北、中、南三座 航道桥和跨大堤、海中、浅滩区引桥，全长29.2公里，采用时速350公里的双线无砟轨道设计，是目前 世界上在建长度最长、建设标准最高的高速铁路跨海大桥。 其中南航道桥全长814.5米，主跨为364米，采用钢桁结合梁斜拉桥结构，共设南北两座主塔。位于主塔 下塔柱与中塔柱交界处的下横梁，是主塔关键受力构件，其作用如同"挑山工的扁担"，未来将直接承载 铁路桥面，并将列车运行的巨大荷载传递至塔身与基础。 杭州湾是典型"喇叭状海湾"，施工环境极为复杂，具有大潮差、强冲刷、急 ...

Core Points - The Tongyu High-Speed Railway, connecting Nantong in Jiangsu to Ningbo in Zhejiang, has achieved a significant milestone with the successful completion of the Fenhu Tunnel, marking the first tunnel to be completed along the entire line [1][3] - The Fenhu Tunnel spans 3,732 meters, with a shield section of 2,420 meters, and was excavated using a domestically produced large-diameter shield machine named "Hongchuan," which completed the task in just 204 days [3][5] - The new railway line will be 301 kilometers long, with a design speed of 350 kilometers per hour, and is expected to reduce travel time from Nantong to Ningbo to just one hour upon completion [3][7] Engineering and Technology - The "Hongchuan" shield machine utilized advanced real-time monitoring and posture adjustment techniques, successfully navigating various risk sources and achieving precise reception under extremely shallow cover conditions [5] - The machine features a sophisticated mud-water separation system, saving 228.4 tons of water for every meter excavated, and aims for zero leakage, zero discharge, and zero pollution [5] Regional Impact - The completion of the Tongyu High-Speed Railway will enhance connectivity with other major rail lines, such as the Beijing-Shanghai and Shanghai-Kunming High-Speed Rail, playing a crucial role in developing the "Railway Triangle" and improving the regional transportation network [7]