该桥横跨张家港河与走马塘河，为独塔双索面预应力混凝土矮塔斜拉桥，全长417.7米。自2024年10月 开工以来，施工团队克服工期紧、结构复杂等挑战，运用智能监控、三维预演、毫米级定位等技术，仅 用15个月完成从桩基、承台、墩柱到主塔封顶的全部工序。后续，施工将全面转入斜拉索安装和主梁悬 臂浇筑阶段，工程建设进入冲刺期。 本报讯(记者田墨池)12月26日，由上海国铁建管公司建设管理、中铁五局承建的通苏嘉甬高铁跨张家港 河斜拉桥主塔顺利封顶。这是全线首座实现封顶的斜拉桥，标志着工程建设取得重要阶段性进展，为后 续全桥合龙奠定基础。 通苏嘉甬高铁是我国"八纵八横"高铁网沿海通道的重要组成部分，北起南通，向南经江苏苏州，浙江嘉 兴、宁波，引入宁波枢纽宁波站，新建线路长301公里，设计时速350公里，全线设10座车站，建设工期 5年。建成后，将与盐城至南通高铁、沪昆高铁、宁波至台州至温州铁路等多条线路相连，对于打造"轨 道上的长三角"，完善区域路网结构布局，助力长三角一体化高质量发展等具有重要意义。 ...

苏南特大桥作为全线重难点控制性工程之一，地跨吴中、吴江两区，全长约25千米。该桥施工环境 复杂，需7次跨越高等级公路、12次穿越密集水网，并多次紧邻人口聚集区。 项目部量身定制架设方案，采用"模拟推演—实时监测—复盘优化"全流程管控模式，攻克软土沉 降、富水地质等施工难题。同时，通过北斗定位技术，精准控制箱梁架设误差，保障预制箱梁架设任务 高效完成。 通苏嘉甬高铁是国家高速铁路网"八纵八横"主骨架之沿海铁路客运通道的重要组成部分，也是架构 苏州"丰"字形国家干线铁路网的南北主动脉。该高铁的建设对提升苏州交通枢纽地位、促进区域经济社 会发展具有重要意义。 近日，通苏嘉甬高铁苏南特大桥第100孔预制箱梁顺利完成架设，标志着桥梁上部结构施工进入加 速推进阶段。 ...

前天（11月23日），由沪杭公司建设、中铁隧道局集团承建的通苏嘉甬高铁江苏段首座最大跨度连 续梁拱组合桥——苏南特大桥跨白蚬江连续梁拱组合桥主跨顺利合龙，打通了14公里的重要架桥机通 道，标志着通苏嘉甬铁路建设取得关键胜利，为长三角南北向骨干通道、苏州"丰"字形国家干线铁路网 的南北主动脉建设注入强劲动能。 据了解，苏南特大桥地跨吴中区、吴江区两个行政区，总长25公里，多次跨越既有公路、河流湖 泊、居民区、工业厂房等建构筑物，技术要求高、施工难度大、安全风险高，是通苏嘉甬铁路控制性工 程之一，深受社会各界关注。作为苏南特大桥重点攻坚工程的跨白蚬江连续梁拱组合桥，上跨苏申外港 线Ⅲ级航道，采用（94+180+94）米预应力混凝土连续梁拱组合结构，施工工艺选用先梁后拱方案。主 梁为单箱双室变截面设计，采用挂篮法分段现浇施工；拱肋计算跨径180米，设计矢高36米，采用哑铃 型钢管混凝土截面，钢管直径1米，拱肋全高3米、腹板宽度0.7米；全桥共设置9道米字撑及17组双吊 杆。 工程建设过程中，项目坚持"首件制"样板引路，利用数智教培中心数字技术，建立全工序可视化方 案，实现施工工艺标准化、交底可视化，形成可复制的"样 ...

Core Insights - The construction activities along the Yangtze River and Jianghuai Plain are experiencing a significant surge, with a focus on enhancing transportation infrastructure and logistics efficiency [1][2][4] Investment and Progress - In the first three quarters, the province completed transportation fixed asset investment of 185.8 billion yuan, accounting for 80.8% of the annual investment plan, exceeding the scheduled progress [1] - The province aims to complete a total transportation investment of 230 billion yuan for the year, ensuring high-quality completion of various work targets [1] Railway Construction - The North Jiangsu High-Speed Railway is progressing rapidly, with the completion of 98% of box girder erection and plans to finish beam erection by the end of November [2] - The total investment in railway projects reached 40.069 billion yuan in the first three quarters, with a strong push to meet annual construction targets in the fourth quarter [3] Bridge and Tunnel Developments - The Zhang Jinggao Yangtze River Bridge construction is advancing, with key engineering components like pile foundations and segment beams being completed [4] - The Jiangyin-Jingjiang Yangtze River Tunnel is also progressing, with 80.27% of the annual plan completed, expected to be operational by 2028, significantly reducing crossing time [5] Highway Expansion - The expansion of the Hu-Wu Expressway is underway, with 90.9% of the annual plan completed, aiming for basic completion by the end of the year [6] - The Jiangsu section of the Weishan-Suzhou High-Speed Railway has initiated box girder prefabrication and erection, transitioning to upper structure construction [3][7]

Group 1 - Suzhou's key transportation projects have shown strong development in 2023, with an investment completion of 22.04 billion yuan from January to September, accounting for 81% of the annual plan, surpassing both last year and the year before's completion levels [1] - Seven projects, including the Wujiang section of Provincial Highway 605, have been completed and opened to traffic, while several other major projects are progressing, including the Tongsujiayong High-speed Railway and the Suzhou North and East Station integrated hubs [1] - The construction of the Huitai Yangtze River Tunnel's southern connection has progressed significantly, with over 20% of soft foundation treatment and bridge pile foundation construction completed within three months [1] Group 2 - The Suzhou section of the Huhangrong High-speed Railway has completed its bridge foundation and cap construction, with ongoing work on the import roadbed and other segments, expected to be completed by January 2026 [2] - The Jiangnan section of the green modern shipping comprehensive rectification project on the Grand Canal in Jiangsu has been actively promoted since its commencement in June 2022, with completion and acceptance expected in October [2] - The Shenzhang Line's Qingyang Port section has seen the completion of the waterway project and eight reconstructed bridges, with remaining bridge structures scheduled for completion and opening by December [2]

Core Viewpoint - The Tong-Su-Jia-Nong High-Speed Railway has made significant progress with the successful placement of the first prefabricated box girder, marking the commencement of the bridge superstructure construction for the Suzhou North section [1] Group 1: Project Overview - The Suzhou North section of the Tong-Su-Jia-Nong High-Speed Railway has a total length of 21.848 kilometers, which includes various construction tasks such as relocation, bridges, tracks, and buildings [1] - The project is responsible for the prefabrication and installation of 405 box girders, comprising 220 double-line girders and 185 single-line girders [1] Group 2: Technical Specifications - The box girder that was recently installed measures 32.6 meters in length, 12.6 meters in width, and 3 meters in height, with a weight of 697 tons [1]

Core Insights - Suzhou's transportation construction has achieved significant progress in the first half of the year, with a total investment of 14.06 billion yuan, exceeding the semi-annual plan by 8.4% [1] - Major infrastructure projects have reached critical milestones, including the completion of six key projects and significant advancements in the construction of the Tongsujiaying high-speed railway [1][2] Group 1 - The total investment in transportation construction for the first half of the year reached 14.06 billion yuan, surpassing the planned target by 8.4% [1] - Six major projects, including the Wujiang section of Provincial Highway 605, have been successfully completed, enhancing the regional road network [1] - Key progress has been made in the construction of the Tongsujiaying high-speed railway, with the successful completion of the Fenhu Tunnel and Suzhou East Tunnel's shield tunneling section [1] Group 2 - The city's transportation system has implemented precise strategies and collaborative efforts to support these achievements, including detailed project planning and monthly statistical analysis [2] - The city has focused on critical periods such as post-Spring Festival resumption and mid-year push, addressing challenges through on-site supervision and resource allocation [2] - The acceleration of major projects is expected to enhance the city's capacity and regional connectivity, contributing to high-quality economic and social development in Suzhou [2]

Group 1 - The construction of the Tong-Su-Jia-Yong High-Speed Railway and the Ru-Tong-Su-Lake Intercity Railway has made significant progress, with the completion of major engineering milestones [1] - The Tong-Su-Jia-Yong High-Speed Railway spans a total length of 300.9 kilometers with a design speed of 350 kilometers per hour, connecting key cities in the Yangtze River Delta region [1] - The Ru-Tong-Su-Lake Intercity Railway, approximately 280 kilometers long, aims to enhance the interconnectivity of the Yangtze River Delta region, facilitating a 1 to 1.5-hour travel time between major cities [1] Group 2 - Starting from July 1, a new train operation schedule will be implemented nationwide, increasing the total number of passenger trains in the Yangtze River Delta to 1,407.5 pairs and freight trains to 1,357.5 pairs [1] - The new schedule significantly reduces travel times between the Yangtze River Delta and various central and western regions, with the introduction of 46 benchmark trains on the Hukun High-Speed Railway Hangzhou-Changsha section [2] - The railway department has optimized train schedules and increased commuter trains to improve travel convenience for passengers [2]

Core Viewpoint - The successful completion of the main span of the Su Nan Grand Bridge marks a significant milestone in the construction of the Tong Su Jia Yong High-Speed Railway, enhancing connectivity in the Yangtze River Delta region [1][2] Group 1: Project Overview - The Su Nan Grand Bridge spans 25 kilometers and crosses multiple existing roads, rivers, lakes, residential areas, and industrial sites, making it a key engineering project for the Tong Su Jia Yong Railway [1] - The main span of the bridge, known as the Niu Chang Jing continuous beam, measures 329.6 meters and employs a single-box double-chamber cross-section design with cantilever construction methods [1] - The project faces challenges due to its complex structure, high technical requirements, and dense surrounding rivers and complicated geological conditions [1] Group 2: Safety and Management - The construction unit prioritizes safety production, implementing a strict safety responsibility system with detailed division of responsibilities [2] - Daily safety management work lists are published to identify and eliminate potential hazards, ensuring project safety and stability [2] - A safety management atmosphere is fostered through various initiatives, including the involvement of community safety officers and monthly evaluations [2] Group 3: Strategic Importance - The Tong Su Jia Yong High-Speed Railway is a crucial part of the national medium- and long-term railway network planning, specifically the "Eight Verticals and Eight Horizontals" high-speed railway main corridor [2] - Once completed, the railway will significantly reduce travel time between core cities in the Yangtze River Delta, promoting high-quality development and integration in the region [2]