新中国建设初期，为打通西北与华北的交通动脉，国家将包兰铁路建设列入"一五"计划。当时物资极度 匮乏，铁路建设者迎难而上。1958年，全长600多米的三盛公黄河铁路特大桥一号桥竣工通车。 随着运输需求不断增长，三盛公黄河铁路特大桥二号桥作为包兰铁路复线扩容的关键工程于1996年开工 建设。1999年，全长1000多米的二号桥竣工，包兰铁路实现复线行车，打通了华北到西北的铁路交通瓶 颈。 2024年9月22日，包银高铁磴口黄河特大桥顺利合龙，肩负起"八纵八横"高铁网京兰通道贯通的重任。 大桥全长5000多米，包银高铁将于2025年12月23日开通运营。 02:25 在黄河奔涌不息的波涛之上，包兰铁路三盛公黄河铁路特大桥一号桥、二号桥与包银高铁磴口黄河特大 桥，宛如三座跨越时空的丰碑，静静诉说着我国铁路建设的发展历程。 从蒸汽机车的轰鸣到"复兴号"的风驰电掣，从人力肩扛的艰苦岁月到智能建造的科技时代，三座大桥的 每一根钢梁、每一块混凝土，见证着我国铁路事业向着更高、更远的未来奋勇前行。 记者：邢广利 报道员:李菁 陈旭斌 张建华 董杰 ...

Group 1 - The Nanzhu High-speed Railway Yucen section has commenced track laying [2][3][4]

Group 1 - The construction of the Mianshan Tunnel, a key project of the Jiaoluo-Ping High-Speed Railway, has successfully completed the shield starting well's diaphragm wall construction, marking the acceleration of the world's largest diameter earth pressure balance shield tunnel construction [1] - The Mianshan Tunnel, the longest section of the Jiaoluo-Ping High-Speed Railway at 6340 meters, is being constructed using a shield method, setting a world record for the excavation cross-section size of earth pressure balance shield tunnels [1] - The project team has innovatively adopted a composite cyclic slotting scheme to address challenges posed by complex geological conditions, ensuring safety and quality while effectively advancing construction progress [1] Group 2 - The Jiaoluo-Ping High-Speed Railway spans 230 kilometers with a design speed of 350 kilometers per hour, forming an important part of China's "Eight Vertical and Eight Horizontal" high-speed rail network [2] - Upon completion, the railway will enhance the hub function of the Hunan-Guangdong corridor, enabling a one-hour travel time between Jiaozuo and Pingdingshan, which will promote regional industrial collaboration and resource sharing [2]

Core Viewpoint - The Nanzhu High-speed Railway segment from Yulin North to Cengxi East has entered the full-track laying phase, marking a significant milestone in the project [1][5]. Group 1: Project Overview - The Nanzhu High-speed Railway Yulin North to Cengxi East segment is constructed by Guangxi Transportation Investment Group and overseen by the Nanning Bureau of China Railway, with a total length of 84.895 kilometers and a design speed of 350 kilometers per hour [2]. - The project includes three stations: Yulin North, Rongxian South, and Cengxi East, with the latter two being newly constructed [2]. - The railway passes through the Gui East region and features 22 tunnels and 65 bridges, resulting in a bridge-tunnel ratio of 84.4% [2]. Group 2: Strategic Importance - The Yulin North to Cengxi East segment is an extension of the Nanzhu High-speed Railway and is crucial for Guangxi's integration into the Guangdong-Hong Kong-Macao Greater Bay Area [4]. - Once completed, the railway will enhance the regional transportation network and play a vital role in establishing Guangxi as an important strategic hub within the Greater Bay Area, promoting the economic interaction between the Beibu Gulf Economic Zone and the Greater Bay Area [4].

记者了解到，此次施工的转体梁工程位于山东省潍坊市境内，梁体全长161.7米，转体总重约1.2万吨， 转体前采用悬臂浇筑法施工工艺，顺时针水平转体至设计桥位。为确保转体的精准性和安全性，项目部 提前制定了详细科学的专项施工方案，引入先进的高精度激光定位系统，对转体过程中的设备状态进行 24小时实时监测。同时，项目采用BIM三维推演技术对施工方案进行论证，针对球铰的水平度、球面轮 廓度及轴心位置进行精细化调节与安装，借助电子水准仪实时动态校准，将各项误差控制在规定范围 内。 潍宿高铁连接山东省潍坊市和江苏省宿迁市，项目建成后，将进一步完善山东、江苏北部区域路网布 局，极大便利沂蒙山、苏北革命老区人民群众出行，对助力区域经济社会发展、黄河流域生态保护和高 质量发展，具有十分重要的意义。 来源：中国青年报客户端 中国青年报客户端讯（中青报·中青网记者 张真齐）12月19日，由雄安高速铁路有限公司建设、中铁四 局承建的潍（坊）宿（迁）高铁——潍坊特大桥跨济青高铁连续梁成功转体。这是潍宿高铁首个跨高速 铁路转体梁，也是山东省在建高铁项目最重的转体梁工程，打通了架梁通道上关键断点。 ...

12月19日拍摄的通泰扬特大桥跨京杭运河斜拉桥合龙施工现场。 12月19日，由中国铁建大桥局承建的沪渝蓉高铁通泰扬特大桥跨京杭运河斜拉桥顺利合龙，通泰扬特大 桥控制性工程取得突破性进展。本次合龙的跨京杭运河斜拉桥位于江苏扬州，全长564.3米，主跨300 米，主塔高128米，桥面距离航道水位约30米。沪渝蓉高铁是国家"八纵八横"高铁骨干通道之一，线路 总长约2100公里，设计时速350公里。新华社图文 ...

Core Points - The completion of the track laying for the Xiongshan section of the Beijing-Hong Kong High-Speed Railway marks a significant milestone, ensuring the line will open on schedule [1] - The Xiongshan section is a crucial part of China's "Eight Vertical and Eight Horizontal" high-speed railway network, enhancing the rail transit system in the Beijing-Tianjin-Hebei region [1] - The project is expected to play an important role in the development of the Xiong'an New Area and the economic and social growth of the surrounding areas [1]

Core Viewpoint - The National Development and Reform Commission has released the "Management Measures for Central Budget Investment in Railway Projects," emphasizing the need for enhanced technical and economic evaluation of railway projects and investment benefit analysis, while rationally determining the capital contribution ratio to support sustainable project operations, with special regions allowed to adopt full capital contributions [1][7]. Investment Support Standards - Investment support scales will be calculated based on the nature of the railway project and its location, with full capital contributions allowed for projects in Tibet, southern Xinjiang, and certain counties in four provinces related to Tibet, while other projects in eastern, central, western, and northeastern regions will consider capital contribution ratios of 50% to 70% of total project investment [3][9]. - Specific central budget investment arrangements include: - 90% capital contribution for main railway projects in Tibet and southern Xinjiang - 70% for projects in four provinces related to Tibet and other border railway projects - 30% to 50% for main railway projects in other eastern, central, western, and northeastern regions - 10% to 20% for new intercity railway projects in key urban clusters [4][10]. Policy Implementation and Impact - The measures clarify that projects benefiting from support policies in central and western regions must adhere to relevant national planning requirements and have completed necessary approvals and funding conditions [7][13]. - Analysts suggest that the new measures will significantly boost railway construction, particularly in central and western regions, enhancing economic connections between western and eastern areas and promoting industrial development in sectors such as steel, cement, and construction machinery [7][13].

Core Viewpoint - China Railway Beijing Bureau has completed the steel truss lifting operations for the Bohai New Area Station and Huanghua New Station of the Shijiazhuang-Hengshui-Cangzhou-Huanghua Intercity Railway, marking a significant milestone in the project [1][7]. Group 1: Project Overview - The Shijiazhuang-Hengshui-Cangzhou-Huanghua Intercity Railway is a high-speed railway in Hebei Province, connecting Shijiazhuang City to Bohai New Area, with a total length of 333.8 kilometers. The newly constructed section from Hengshui to Bohai New Area (Henghuang Section) is 223.8 kilometers long, designed for a speed of 250 kilometers per hour [3][9]. - Bohai New Area Station and Huanghua New Station are key stations along this segment of the railway [3][9]. Group 2: Structural Details - The steel truss structure of Bohai New Area Station measures 58.8 meters in length and 36.4 meters in width, with a truss area of 1822.8 square meters. Huanghua New Station's truss structure measures 111 meters in length and 25.2 meters in width, with a truss area of 2797.2 square meters. Both trusses are designed as regular four-cornered pyramidal trusses, with welded ball nodes and elastic spherical steel supports [5][12]. Group 3: Strategic Importance - The Shijiazhuang-Hengshui-Cangzhou-Huanghua Intercity Railway is part of the "four vertical, four horizontal, and one ring" planning of the Beijing-Tianjin-Hebei intercity railway network, serving as a core project to create a regional "one-hour traffic circle." Once operational, it will enhance connectivity between regions, improve transportation efficiency for cities along the route, and promote economic and social development in the central and southern Hebei region, as well as support the coastal openness of Bohai New Area [7][14].

包银高铁起自包头站，经内蒙古自治区包头市、巴彦淖尔市、鄂尔多斯市、乌海市，宁夏回族自治 区石嘴山市、银川市，接入银川站，正线全长519公里，设计时速250公里，实行分段建设，其中，惠农 至银川段全长97公里，已于2024年10月开通运营，此次开通的包头至惠农段全长422公里。 新华社北京12月19日电 记者19日从中国国家铁路集团有限公司获悉，包头至银川高铁包头至惠农 段将于12月23日建成通车，将为新时代西部大开发注入新动能。 【纠错】 【责任编辑:张樵苏】 包银高铁包惠段穿越河套平原，沿乌兰布和沙漠边缘地带和黄河行进，沿线地质、水文环境复杂， 施工难度大。自2022年4月开工建设以来，国铁集团组织各参建单位优质高效推进工程建设，建成了磴 口黄河特大桥、甘德尔山隧道等重点工程。项目开通运营前，按照铁路工程验收标准及相关技术要求， 中铁十四局等单位参与包银高铁包惠段路基及附属工程、站房专业检验评定，确保工程满足高速运行要 求，为线路安全运行提供质量保障。 ...