世界跨径最大钢拱桥凤来大溪河特大桥钢桁拱合龙 武隆至两江新区高速公路是重庆高速公路网中"四环二十二射六十联线"的第十六联线，建成通车后，将 串联起仙女山、白马山等旅游资源，助力沿线特色农业及生态旅游产业发展。(完) 来源：中国新闻网 编辑：陈俊明 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 中新社重庆11月27日电 (记者 郭虹 肖江川)27日，世界跨径最大的钢拱桥——重庆武隆至两江新区高速 公路凤来大溪河特大桥钢桁拱成功合龙。 11月27日，世界跨径最大钢拱桥凤来大溪河特大桥钢桁拱成功合龙。王凯 摄 凤来大溪河特大桥全长1136.7米，主桥采用580米上承式钢箱桁架拱桥设计，为目前世界跨径最大的钢 拱桥。大桥地处武隆区高陡深切峡谷地带，桥面距河面高差超310米，相当于100层楼的高度。大桥采用 全钢结构，总用钢量2.5万吨。 中铁二院工程集团副总工程师、凤来大溪河特大桥总设计师陈克坚在现场告诉记者，设计选用更经济、 更适合深山峡谷地形的钢拱桥施工方案，其受力更加明确、安全性相对可靠、施工相对方便。 据了解，在大桥建设过程中，施工团队攻克了全栓接钢桁拱桥节段应力和线形双控、有限空间桁 ...

Core Points - The Nanjing Xinxin River Yangtze Bridge officially opened on November 26, significantly reducing travel time across the river to under 10 minutes, marking a key development in Nanjing's urban infrastructure [1][3] - The bridge, part of the Nanjing urban planning, is a crucial connection between the main city and the Jiangbei New Area, enhancing regional economic collaboration [1][3] Summary by Sections Construction and Engineering Achievements - The bridge is described as a culmination of modern engineering technology, overcoming several world-class challenges and providing a "Nanjing solution" for similar bridge constructions [2] - Innovations include the development of the highest strength 2100Mpa main cable steel wire in China, saving 7,300 tons of steel, and ensuring safety under extreme conditions such as wind loads and earthquakes [2] - Research on the anchorage foundation's soil stress mechanisms improved the foundation's bearing efficiency by 30% [2] - The bridge features enhanced wind resistance measures and a fire protection system for the cable system, significantly improving safety and comfort for vehicles [2] Traffic Regulations and Functionality - From the day of opening, the bridge prohibits hazardous materials transport vehicles, medium and large trucks, motorcycles, non-motorized vehicles, and pedestrians, ensuring traffic safety and defining the bridge's primary function for passenger transport and light logistics [2] - This regulation aligns with the bridge's role in supporting regional economic development and passenger services [2] Impact on Regional Connectivity - The bridge's opening is expected to enhance the Yangtze River's crossing capacity and improve the regional road network, marking a new chapter in Nanjing's development strategy during the 14th Five-Year Plan [3]

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Core Viewpoint - The opening of the new Xinshengwei Yangtze River Bridge significantly enhances connectivity in Nanjing, reducing travel time across the river from one hour to ten minutes, and marks a shift from a "separated" to a "integrated" urban landscape [1][2]. Group 1: Infrastructure Development - The Xinshengwei Yangtze River Bridge is the sixth free river crossing in Nanjing, contributing to a total of 15 river crossings in the city, which facilitates urban integration [1]. - The bridge spans approximately 13.17 kilometers and serves as a crucial hub connecting Qixia District, Jiangbei New Area, and Liuhe District [1]. - The bridge is part of Nanjing's "high-speed road system" and helps alleviate traffic pressure on existing routes while promoting development in surrounding areas [2]. Group 2: Engineering and Technology - The bridge features a main span of 1,760 meters, making it the first in China and the third in the world of its kind, showcasing advanced engineering techniques [2]. - The construction involved overcoming several world-class technical challenges, providing a valuable "Nanjing solution" for similar bridge projects [2]. Group 3: Future Developments - Four additional river crossings are currently under construction in the Nanjing section of the Yangtze River, with key project milestones being achieved [3]. - The focus for the "14th Five-Year Plan" includes the development of multiple railway and metro river crossings, aiming to enhance the connectivity of the urban transport network [3]. - By the end of the "14th Five-Year Plan," the total number of river crossings in Nanjing is expected to reach 15 (17 routes), creating a more balanced, three-dimensional, and convenient cross-river transportation system [3].

Core Viewpoint - The opening of the Xinxingwei Yangtze River Bridge marks a significant development in Nanjing's transportation infrastructure, enhancing connectivity between the main city and the Jiangbei New Area, and reducing travel time from one hour to under ten minutes [1][3]. Group 1: Infrastructure Development - The Xinxingwei Yangtze River Bridge is the sixth free crossing in Nanjing, with a total length of approximately 13.17 kilometers and a main span of 1,760 meters, making it the "first in China and third in the world" [3][8]. - The bridge is designed for a speed of 80 km/h and features a six-lane dual carriageway, serving as a crucial hub for Nanjing's urban development strategy [3][8]. Group 2: Urban Development Strategy - Nanjing's "embracing the river development" strategy aims to shift the city's focus from the Qinhuai River era to the Yangtze River era, promoting balanced development between the southern and northern banks of the river [3][8]. - The Jiangbei New Area is identified as a key growth engine for regional economic development, supported by recent government policies aimed at enhancing its capabilities [3][8]. Group 3: Future Plans - Nanjing has accelerated the construction of river-crossing channels, with three new crossings completed during the 14th Five-Year Plan period, bringing the total to 15 crossings [8]. - Future plans include the construction of 24 additional crossings over the next decade, which will facilitate a transition from a "single center" to a "multi-center network" urban structure [8].

Core Points - The Nanjing Xinshengwei Yangtze River Bridge officially opened on November 26, marking a significant improvement in commuting efficiency, allowing for "minute-level" travel times between key areas in Nanjing [1] - The bridge spans 13.17 kilometers with a mainline design speed of 80 km/h and features six lanes in both directions, facilitating free passage [1] - The bridge connects major districts including Qixia, Jiangbei New Area, and the Economic Development Zone, alleviating traffic pressure on surrounding highways [1] Infrastructure Development - The bridge is designed as a suspension bridge with a main span of 1,760 meters, setting a record for similar bridges in China, and is capable of accommodating 50,000-ton vessels, enhancing shipping safety and efficiency [2] - Future plans for Nanjing's cross-river transportation system include multiple projects such as the Shangyuanmen Railway and Metro Line 4, aiming to establish a more balanced and convenient transportation network by the end of the 14th Five-Year Plan [2] - Currently, Jiangsu Province has completed 21 cross-river passages and has 8 under construction, with Nanjing having 6 free urban road crossings [2] Economic Impact - The bridge is expected to enhance logistics efficiency and business interactions, transforming regional competitive advantages into tangible benefits for local industries [1] - It will facilitate industrial collaboration between the southern and northern banks, promoting sectors such as new materials, electronic information, and advanced manufacturing [1] - The bridge will contribute to the formation of an innovative industrial network, linking various manufacturing corridors and technology innovation zones [1]

Core Points - The Nanjing Xinshengwei Yangtze River Bridge officially opened on November 26, significantly reducing travel time from Nanjing's main city to Jiangbei New Area from 1 hour to under 10 minutes [1] - The bridge is a crucial infrastructure project, spanning approximately 13.17 kilometers with a main span of 1760 meters, making it the "first in China and third in the world" [1] - The bridge is part of Nanjing's strategy to enhance urban development by promoting the "embracing the river" initiative, aiming to integrate the Jiangnan and Jiangbei regions [1][6] Infrastructure Development - The construction of the Xinshengwei Bridge is part of a broader initiative to accelerate the development of river-crossing infrastructure in Nanjing, with three new crossings completed during the 14th Five-Year Plan period [6] - Nanjing now has a total of 7 river-crossing bridges and 15 river-crossing channels, with additional projects underway [6] - Future plans include the construction of 24 river-crossing channels by 2035, indicating a significant push towards enhancing connectivity between the two banks of the Yangtze River [6] Economic Impact - The development of river-crossing channels is expected to transform Nanjing's urban structure from a "single center" to a "multi-center network," improving resource allocation efficiency across the city [6] - The Jiangbei New Area is positioned as a key growth engine for regional economic development, supported by government policies aimed at fostering high-quality construction and modernization [1][2]

Core Viewpoint - The opening of the Xinxingwei Yangtze River Bridge marks a significant development in Nanjing's transportation infrastructure, enhancing connectivity between the main city and the Jiangbei New Area, and supporting the city's "embracing the river" development strategy [1][3][4]. Infrastructure Development - The Xinxingwei Yangtze River Bridge is the sixth free crossing in Nanjing, reducing travel time from one hour to under ten minutes between the main city and Jiangbei New Area [1]. - The bridge spans approximately 13.17 kilometers with a main bridge length of 1,760 meters, making it the "first in China and third in the world" [3]. - Nanjing has accelerated the construction of river crossings, with three completed during the 14th Five-Year Plan period, bringing the total to 13 completed and 4 under construction [10]. Urban Development Strategy - Nanjing's "embracing the river" strategy aims to enhance the development of the Jiangbei New Area, which is crucial for regional economic growth and modernization efforts in Jiangsu [4]. - The city plans to construct 24 crossings by 2035, transitioning from a "single center" to a "multi-center network" urban structure, thereby improving resource allocation efficiency [10]. Economic Impact - The development of river crossings is expected to alleviate pressure on the main city and support the establishment of a globally influential industrial and technological innovation center [10].

新华社杭州11月26日电 记者从中国铁路上海局集团有限公司（上铁集团）了解到，26日，经过约54分 钟的铁路封锁施工，浙江嘉兴市区快速路环线跨沪昆铁路转体桥完成转体，重约3.2万吨的"巨无霸"成 功实现40.6度"转身"，精准对接桥体，标志着嘉兴市区快速路环线全线贯通进入倒计时。 嘉兴市区快速路环线跨沪昆铁路转体桥为独塔中央索面混凝土斜拉桥，由上铁集团东华地铁公司代建、 中铁二十四局承建。据中铁二十四局项目负责人刘勇军介绍，转体系统由下转盘、球铰、上转盘、牵引 系统组成。施工采用2台大吨位连续张拉千斤顶同步牵引转盘钢绞线，钢绞线带动转体系统如"石磨"般 转动，确保转体桥平稳转体，成功跨越运营繁忙的沪昆铁路并实现"毫米级"精准就位。 嘉兴市区快速路环线工程全长28.7公里，是嘉兴市快速路网的重要组成部分，共分3期实施。线路建成 通车后，完整的闭环将有效疏解城市交通压力，大幅提升区域协同发展效能。（记者樊曦） ...

来源：中国青年报客户端 中国青年报客户端浙江金华讯（肖德文 中青报·中青网记者蒋雨彤）11月25日，浙江省建德至武义高速 公路兰溪段控制性工程——衢江特大桥建设取得又一重大进展，引桥第八联首段钢箱梁完成精准架设， 标志着大桥由下部结构全面转入上部结构施工阶段，为后续主桥建设奠定了坚实基础。 11月25日，浙江省建德至武义高速公路兰溪段控制性工程——衢江特大桥建设工地，引桥第八联首段钢 箱梁完成精准架设。方雨晗/摄 该项目由金华交投兰城高速公路有限公司投资、中铁大桥局集团有限公司承建。作为目前浙江省内同类 型中跨度最大的提篮式网状系杆拱桥，衢江特大桥在设计阶段就秉承"科学规划、精准建造"的理念。针 对衢江流域地形特点，为确保工程结构与自然地貌的协调统一，大桥引桥采用两种跨径钢箱梁设计形 式。本次吊装第八联（建德侧）引桥钢箱梁中的K段，长18.78米、宽5.1米、高4.2米，重72.4吨，采用 滑移施工工艺，由主臂42米的400吨履带吊装。项目团队先后开展多轮方案论证，在确定最优方案的基 础上，制定了周密的施工组织计划，同步完成全流程安全技术交底工作；同时引入第三方对滑移体系进 行全程监测，全力保障施工作业安全。 ...