Core Viewpoint - The completion of the Longxing Bridge, a key project of the Chang-Jiu High-speed Railway, marks a significant achievement in engineering, setting six world records and enhancing transportation capacity in Nanchang [1][2]. Group 1: Project Overview - The Longxing Bridge spans 19 kilometers and integrates three transportation modes: high-speed rail, urban expressway, and main urban road [1]. - The bridge's main span of 320 meters and a design speed of 350 kilometers per hour make it a unique engineering feat [1]. Group 2: Engineering Techniques - The construction utilized a "first side span, then middle span" technique, ensuring precise alignment during the assembly of the steel beams [1]. - The bridge features innovative designs, including the world's largest diameter stay cables and the first use of elastic restraint supports in a cable-stayed bridge [1]. Group 3: Economic and Regional Impact - The completion of the bridge will significantly enhance Nanchang's cross-river traffic capacity [2]. - The Chang-Jiu High-speed Railway is a crucial part of China's national railway network, improving connectivity among key urban clusters and supporting regional economic development [2].

"高空大件吊装风险很高，我们必须全方位进行风险源辨识，事前组建专业钢结构吊装队伍，对起重 机、钢缆、吊具进行全面检查，并密切关注天气情况，避开大风大雨等影响吊装的极端天气，确保作业 安全无误。"中交二航局池州长江公铁大桥项目技术负责人谈磊介绍，钢结构焊接后冷却会形变，因此 在工厂内进行预拼焊接，能最大限度减少形变。安装过程中，一节梁偏差几毫米，全桥累计起来就会误 差很大。"我们对每节段的吊装都会实时监控纠偏，控制钢梁线性，确保最终合龙精度。" 池州长江公铁大桥作为合(合肥)池(池州)城际铁路控制性工程，建成通车后，对完善安徽路网布局和提 升皖南综合交通发展，加快融入长三角一体化发展具有重要意义。 5月14日，随着蓝色的巨型桥面吊机缓缓提起一节白色钢桁梁，长江安徽段第六座公铁大桥——池州长 江公铁大桥成功吊装首节钢桁梁，标志着该项目正式步入主桥上部结构钢梁施工阶段。 池州长江公铁大桥连接安徽省铜陵市和池州市，全长3108.5米，采用上层6线高速公路、下层2线高速铁 路和预留2线城际轨道布局。跨江主桥长1768米，采用主跨812米双层钢桁梁斜拉桥，主桥共计69个节 段，总重约91449吨，相当于3000头成年亚洲 ...

5月13日，历时64分，国道108线忻州段改建工程小泉沟特大桥41号墩顺时针转动76度后，跨越朔黄 铁路与主线桥实现完美衔接，上演"高空转体"，为全线建成通车奠定坚实基础。 6时15分，施工现场负责人按下启动键，2组千斤顶同步施加牵引力，承载着万吨梁体的球铰支座开 始以1.01度/分钟的速度顺时针转动。7时19分，梁体精准嵌入预设的合龙段，全站仪实测平面误差8毫 米，高程差5毫米，优于设计允许的12毫米偏差，"空中转体"顺利完成。 项目建成后，对于助力太忻一体化经济区与太原都市圈资源互补，提高国道通行能力和服务水平， 释放城市发展空间，优化国道108线在忻州及太原境内的路网衔接、提升道路安全水平、改善区域交通 条件，推动经济社会发展具有重要的作用和意义。(完) 国道108线忻州段改建工程位于繁峙县集义庄乡东侧，全长170.358公里。作为首都放射线G108线北 京——昆明公路在忻州境内的重要组成部分，小泉沟特大桥上跨朔黄铁路转体桥全长120米，梁面宽 30.18米，中支点梁高6.2米，边支点梁高3米，转体总重1.5万余吨，采用2×60米现浇箱梁预应力混凝土 转体桥形式跨越，是全线的重要控制性工程。 该项目由中 ...

转自：北京日报客户端 5月8日，中交路建承建的广东佛山市顺德大桥建成通车。项目位于佛山市顺德区东部新城，路线全长 2.62公里，其控制性工程顺德大桥横跨容桂水道，总长2455.14米，主跨626米，为钢混组合结构的高低 塔双索面混合梁斜拉桥，双向八车道，设计时速60公里，被誉为"佛山第一跨"。 当前，顺德东部新城由大良、容桂、伦教三街道组成，是本地区传统经济、文化与金融中心，跨容桂水 道的交通长期依赖已有的德胜大桥，其通行能力已饱和，成为制约区域融合的瓶颈。顺德大桥项目通车 后，将有效打通顺德融入粤港澳大湾区"一小时交通圈"区域道路瓶颈，加快粤港澳大湾区经济发展。 摄影：吴丽珍 来源：北京日报客户端 为突破施工中现有的技术壁垒，项目团队开展专项攻关，自主研发了"多功能自爬式钢塔提升机"。据项 目负责人赖引明介绍，该提升机集合了钢塔节段安装、钢横梁整体提升、钢箱梁安装、变截面适应性调 节、作业平台一体化爬升五个功能为一体，实现了"一机多用"，被大家形象地称为桥梁界的"变形金 刚"。 多功能自爬式钢塔提升机安装钢塔、钢横梁，突破传统安装工艺及设备，填补了钢塔施工在自爬升安装 方面的空白，引领了钢塔、钢横梁设计及施 ...

Group 1 - The construction of a new bridge in Bizerte, Tunisia, aims to alleviate severe traffic congestion caused by an outdated bridge, enhancing local transportation and tourism [1][2] - The project is being undertaken by Sichuan Road and Bridge Group, a subsidiary of China Shu Dao Investment Group, which was selected for its superior construction experience and technical capabilities [2] - The bridge will be a steel truss composite beam bridge, measuring 2070 meters in total length with a main span of nearly 300 meters, and is expected to become a local landmark [2] Group 2 - The project is significant as it represents the largest engineering contract for Chinese companies in Tunisia since the establishment of diplomatic relations, aiming to create a brand effect and expand into surrounding Arab markets [2] - The bridge is described as a symbol of "hard connectivity" through infrastructure, "soft connectivity" through technology, and "heart connectivity" through the friendship between China and Tunisia [3] - The project is expected to be completed within three years, fulfilling the long-held dream of local residents for a modern bridge [3]

5月8日，中交路建承建的佛山市顺德区顺德大桥项目建成通车，大良与容桂之间的车程由原绕行40分钟 缩短至5分钟。 顺德大桥项目位于佛山市顺德区东部新城，路线全长2.62公里，其控制性工程顺德大桥横跨容桂水道， 总长2455.14米，主跨626米，为钢混组合结构的高低塔双索面混合梁斜拉桥，被誉为"佛山第一跨"。项 目采用双向八车道，设计时速60公里，荷载等级为公路Ⅰ级。 顺德大桥索塔为罕见的钢混组合子母塔型式，其中容桂侧索塔高204米，大良侧索塔高151米。全桥共计 112个钢塔节段，最大节段重量达250吨，最大吊高达200米。单个索塔设计3道横梁，中、上横梁采用纯 钢结构，高塔横梁采用5米(宽)×5米(高)"回"字形设计，上横梁长33米，中横梁长36.14米。上横梁最大 吊装高度为196米，最大吊装重量达到482吨。由于高塔处于容桂水道百余米外的陆地上，无法采用大吨 位浮吊吊装方案，200米的吊高也让所有履带吊设备力不从心，而国内满足吊装条件的塔吊保有量少、 档期紧、租金高。此外，钢横梁吊装重量大，常规工艺需通过分节段吊装后高空散拼，安全风险大。颇 高难度的钢塔节段及横梁吊装，给全体建设者带来巨大挑战。 爬塔机 ...

Core Viewpoint - The Huangmaohai Cross-Sea Passage has been awarded the George S. Richardson Medal at the 2025 International Bridge Conference (IBC), marking it as the only project from China to receive this honor in the current session, and it is the second such award for Guangdong Province and Guangdong Transportation Group [1][2]. Group 1: Project Recognition - The Huangmaohai Cross-Sea Passage is recognized for its outstanding achievements in design, construction, research, and education, as it is awarded the most prestigious medal in the bridge industry [1]. - The IBC is a highly influential academic conference in the global bridge community, with awards established in 1988 [1]. Group 2: Technical Innovations - The project team has achieved significant innovations in aesthetic design, structural systems, damping devices, wind vibration control technology, and industrialized construction methods to address challenges such as typhoons and marine corrosion [1][2]. - Technologies such as central auxiliary cables, liquid viscous dampers, and friction pendulum isolation bearings have notably enhanced the bridge's stiffness and durability [2]. Group 3: Environmental Considerations - The project incorporates green and eco-friendly principles, ensuring ecological protection and avoiding sensitive areas, thus achieving harmony with the natural environment [2]. Group 4: Economic Impact - The Huangmaohai Cross-Sea Passage strengthens connectivity between underdeveloped regions in western Guangdong and the Guangdong-Hong Kong-Macao Greater Bay Area, promoting coordinated regional economic development [2].

Core Viewpoint - The construction of the Jianyang Tuojiang Grand Bridge is a key project in the Chengdu-Chongqing high-speed railway, which will significantly reduce travel time between Chengdu and Chongqing to 50 minutes upon completion [7][8]. Design and Engineering - The bridge features a main arch span of 320 meters and side arches of 72 meters, designed as a thrust-free composite arch bridge to accommodate geological conditions and navigation needs [8][9]. - The design process began in 2020, with the team opting for a thrust-free composite arch bridge over a cable-stayed bridge due to lower excavation volume, shorter construction time, and reduced costs [10][11]. Construction Techniques - The construction employs Building Information Modeling (BIM) and virtual assembly technology to enhance the efficiency of assembling the massive arch components [11][14]. - Each arch rib is composed of four steel pipes filled with concrete, with a length of 12 meters per rib, and the construction team utilizes digital scanning to ensure precision in assembly [11][12]. Quality Control - The project incorporates an intelligent bolt tightening system to ensure the correct torque is applied to approximately 72,000 high-strength bolts, preventing issues such as under-tightening or over-tightening [17][18]. - An intelligent temperature control system is also implemented to monitor and adjust the cooling of concrete during pouring, mitigating the risk of cracking due to temperature differentials [19]. Project Timeline - The Jianyang Tuojiang Grand Bridge is expected to be completed and ready for the first high-speed train service by the second half of this year [19].

Core Insights - The completion of the core foundation construction for the Zhang Jinggao Yangtze River Bridge marks a significant milestone in the project, with the final C30 concrete poured into the foundation pit [1] - The bridge, which will feature the world's largest span for a suspension bridge, is designed to enhance connectivity in the Yangtze River Economic Belt and the Yangtze River Delta integration [6] Construction Details - The northern anchor of the bridge, located on the island of Mazhou, measures 118.05 meters in length and 75.05 meters in width, and has been constructed to withstand over one million tons of tensile force [3] - A total of 110,000 cubic meters of concrete has been poured, equivalent to filling 44 standard swimming pools, using an innovative three-layer pouring technique [3] - The project faced significant challenges, including material transportation issues, adverse weather conditions, and the need for technical innovations [3][5] Project Management Strategies - The project team implemented a 24-hour material response mechanism to ensure efficient logistics and quality control [5] - Collaboration with meteorological and emergency management departments allowed the team to optimize construction schedules based on weather conditions [5] - Technological advancements included transforming existing platforms for multi-functional use and upgrading traditional methods to improve efficiency in concrete pouring [5] Future Impact - Upon completion, the bridge will reduce travel time from Zhangjiagang to Rugao from one hour to just 20 minutes, significantly improving regional connectivity [6] - The bridge is part of the "14th Five-Year Plan" key river crossing projects, linking major highways and enhancing the transportation network across the region [6]

Core Viewpoint - The Huangmaohai Cross-Sea Channel has been awarded the George S. Richardson Medal at the 2025 International Bridge Conference (IBC), marking it as the only project from China to receive this honor in the current session [1][2]. Group 1: Award Significance - The IBC is a prestigious academic conference with significant influence in the global bridge community, and its awards are considered the "Nobel Prize" of the bridge industry [1][2]. - The George S. Richardson Medal is the oldest and most influential award established by the International Bridge Association, focusing on outstanding achievements in design, construction, research, and education [2]. Group 2: Project Innovations - The Huangmaohai Cross-Sea Channel is the second bridge project in Guangdong Province to receive this award, following the Shenzhen-Zhongshan Channel [2]. - The project team has achieved several innovative results in aesthetic design, structural systems, damping devices, wind vibration control technology, and industrialized construction methods [2][3]. - Technologies such as central auxiliary cables, liquid viscous dampers, and friction pendulum isolation bearings have significantly enhanced the bridge's stiffness and durability [3]. Group 3: Environmental and Economic Impact - The project incorporates industrialized construction techniques that improve precision and efficiency, achieving millimeter-level accuracy in construction [4]. - The design emphasizes ecological protection, avoiding sensitive areas to ensure harmony with the natural environment [4]. - As a vital infrastructure for the Guangdong-Hong Kong-Macao Greater Bay Area, the Huangmaohai Cross-Sea Channel enhances connectivity and promotes coordinated regional economic development [4].