中国最大跨海悬索桥主塔实现"云端合龙" 中新社舟山10月10日电 (张斌 孙卓群)10日，在浙江宁波舟山港六横公路大桥二期工程建设现场，双屿 门大桥六横侧主塔完成上横梁"云端合龙"——重达180吨的最后一段横梁精准吊装就位，标志着这座主 跨1768米的中国最大单跨钢箱梁跨海悬索桥，向全线贯通迈出关键一步。 双屿门大桥的建设集中展现"舟山制造"硬实力与中国桥梁技术水平。承担主塔钢结构制造的中铁宝桥 (舟山)有限公司，实现从板材切割到钢梁涂装的全流程"智造"；智能焊接机器人搭配质量实时监测系 统，使焊接一次合格率稳定在99.5%以上，效率同比提升超40%。 据介绍，这座大桥的多项技术属于首创：索塔采用"型钢骨架+钢筋部品化混凝土组合结构"，建设团队 创新"地面预制、整体吊装"方案，如"搭积木"般提升品质与效率；通过"数字孪生"预拼装，有效降低海 上施工风险。 六横公路大桥二期工程建成后，将完善宁波舟山港集疏运网络，为浙江海洋经济发展、长三角一体化推 进注入动力。(完) 来源：中国新闻网 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 ...

Core Viewpoint - The construction of the Hangzhou Bay Cross-Sea Railway Bridge is progressing rapidly, marking a significant step in the development of the "Railway on the Yangtze River Delta" initiative [1][2]. Group 1: Project Overview - The Hangzhou Bay Cross-Sea Railway Bridge is a key project for the newly constructed Tongzhou-Ningbo High-Speed Railway, featuring three navigation bridges and a total length of 29.2 kilometers, designed for a speed of 350 kilometers per hour [2][3]. - The South Navigation Bridge spans 814.5 meters with a main span of 364 meters, utilizing a steel truss combined beam cable-stayed bridge structure [2]. Group 2: Construction Challenges - The construction environment in Hangzhou Bay is complex, characterized by significant tidal differences, strong erosion, rapid currents, and deep mud layers, which pose high safety risks and construction difficulties [2]. - The construction team implemented continuous 11-hour operations and utilized a smart temperature control system to ensure the quality and durability of the concrete [2]. Group 3: Strategic Importance - The Tongzhou-Ningbo High-Speed Railway is an essential part of China's "Eight Vertical and Eight Horizontal" high-speed rail network along the coast, connecting multiple cities and enhancing the integration of the Yangtze River Delta region [3].

Core Insights - The article highlights the successful application of advanced technology in the construction of the Tuhai River Grand Bridge, which is a critical infrastructure project for the Jinan to Linqing Expressway [1][3][6] Group 1: Technological Innovation - The project team adopted 3D laser scanning technology to enhance measurement efficiency, reducing the time required for adjustments from two days to just a few hours, thus significantly improving operational efficiency [1][3] - The use of 3D scanning allowed for the creation of reverse reality models that were compared in real-time with design BIM models, leading to a 100% acceptance rate for 126 construction segments [3][4] - The introduction of the "N+2 segment block advanced installation of wave-shaped steel web" technique replaced the traditional "N+1" method, resulting in a 45-day reduction in construction time [4] Group 2: Quality Control - The project implemented a Doppler detection system to ensure the quality of high-strength bolts, allowing for rapid identification of non-compliant areas [4] - A quality control team conducts daily site inspections, weekly analyses, and monthly reviews to ensure that every construction phase is thoroughly monitored and validated [4][5] - The project has achieved recognition with seven national invention patents and one international invention patent, along with various provincial and departmental quality control achievements [5] Group 3: Safety Management - The project employs an AI monitoring system to track safety hazards in real-time, focusing on optimizing wind resistance measures for construction equipment [5] - Comprehensive safety training and daily briefings are conducted for high-altitude workers, along with a one-person-one-card management system to monitor qualifications and health [5] - The project has established a multi-dimensional safety management system that includes equipment inspections and weather monitoring to ensure a safe working environment [5][6] Group 4: Economic Impact - The Tuhai River Grand Bridge is expected to enhance regional economic development by improving transportation links in the northwest of Shandong Province [6]

Core Viewpoint - The introduction of the pile-beam integrated machine in the Red Sea region of Saudi Arabia marks a significant advancement in construction technology, emphasizing ecological protection while enhancing construction efficiency [2][4]. Group 1: Project Overview - The project involves the construction of the Lahek connecting road and cross-sea bridge, which includes two small bridges, one large bridge, and one extra-large bridge, connecting multiple tourist islands [2]. - The main bridge spans 2,170 meters and crosses approximately 30,000 square meters of mangrove forest, necessitating innovative construction methods to minimize environmental impact [2]. Group 2: Technological Innovation - The pile-beam integrated machine, named "Red Sea Vision No. 1," is specifically developed for this project and has successfully completed several key milestones since its deployment in June [4]. - The machine can lift precast beam blocks weighing over 200 tons and operates with a construction efficiency that is 3 to 5 times greater than traditional methods [3]. - An intelligent control system with 12 sensors monitors the load on each leg of the machine, achieving a walking distance precision of 600 millimeters and an overall error of no more than 5 millimeters [3]. Group 3: Environmental and Social Impact - The project aligns with Saudi Arabia's Vision 2030, focusing on creating a green ecological tourism project that includes 50 hotels, over 1,000 residential units, and an international airport [2]. - The use of advanced Chinese construction equipment not only improves efficiency but also demonstrates a commitment to environmental protection and social responsibility, setting a benchmark for green construction in the Red Sea region [4].

Core Insights - The project in Saudi Arabia's Red Sea region utilizes the first pile-beam integrated machine in the Middle East, showcasing a commitment to ecological protection while constructing infrastructure [1] - The Red Sea tourism project aligns with Saudi Arabia's Vision 2030, aiming to create a comprehensive tourism city with 50 hotels, over 1,000 residences, and an international airport [1][3] - The pile-beam integrated machine, named "Red Sea Vision No. 1," was specifically developed for this project and has successfully completed several key milestones since its deployment in June [3] Group 1: Project Overview - The project includes two small bridges, one large bridge, one extra-large bridge, and permanent embankments, connecting multiple tourist islands [1] - The main bridge spans 2,170 meters and crosses approximately 30,000 square meters of mangroves, necessitating innovative construction methods to minimize ecological impact [1] Group 2: Technological Innovation - The all-precast bridge structure solution is based on experiences from the Xiong'an New Area, significantly improving construction efficiency [2] - The pile-beam integrated machine can lift precast beam blocks weighing over 200 tons with precision, achieving construction efficiency 3 to 5 times greater than traditional methods [2] - An intelligent control system with 12 sensors monitors the load on the machine's legs, ensuring high stability and precision during operation [2] Group 3: Environmental and Social Responsibility - The project exemplifies the integration of Chinese manufacturing capabilities with sustainable practices, setting a benchmark for green construction in the Red Sea region [3] - The use of advanced equipment not only enhances construction efficiency but also effectively protects the local mangrove ecosystem, reflecting the social responsibility of Chinese enterprises [3]

Core Viewpoint - China Railway Group Limited (601390) announced the issuance of its corporate bonds, which will pay the final annual interest and principal on October 20, 2025 [1] Summary by Relevant Sections - **Bond Details** - The bond is referred to as "10 Zhongtie G4" with a code of 122055 [1] - The total issuance amount is 3.5 billion yuan [1] - The bond has a maturity period of 15 years [1] - The coupon rate is set at 4.50%, with each bond having a face value of 1,000.00 yuan and an interest payment of 45.00 yuan (tax included) [1] - The bond will be delisted on October 20, 2025 [1]

Core Points - The Demerara River Bridge, constructed by China Railway Construction International Group, officially opened on October 5, marking a significant infrastructure achievement for Guyana [1][3][5] - The bridge is a symbol of courage, wisdom, and progress, enhancing transportation capacity and efficiency while reducing costs [3] - The project is a milestone in the high-quality construction of the Belt and Road Initiative, showcasing the friendship between China and Guyana [3] Company and Industry Summary - The bridge spans approximately 2900 meters with a design speed of 80 km/h and features a dual four-lane roadway, with a projected lifespan of 100 years [5] - The project has created over a thousand jobs directly or indirectly and involved training over 300 local technicians, demonstrating a commitment to local development [3] - The bridge is expected to significantly improve travel conditions for residents on both sides of the Demerara River, reducing travel time by three-quarters and enhancing the efficiency of river traffic [5]

Core Points - The 60th anniversary of diplomatic relations between China and Mauritania marks a significant milestone, with both countries establishing a strategic partnership in 2024, symbolizing mutual respect and cooperation [1] Group 1: Friendship Port - The Friendship Port, built with Chinese assistance, has been crucial for Mauritania's economy, handling over 90% of the country's cargo imports and exports since its completion in 1986 [2] - The port's capacity was expanded from 900,000 tons to 6 million tons annually after the construction of new berths by China Road and Bridge Corporation in 2014, accommodating larger vessels and improving efficiency [2] - The port has created over 3,000 jobs and is seen as a gateway for Mauritania to the world, significantly contributing to the country's economic independence [3] Group 2: Friendship Bridge - The Friendship Bridge, completed in May 2023, is a modern infrastructure project that has greatly improved traffic conditions in the capital, reducing congestion and enhancing safety [4] - The bridge features a dual four-lane design and has led to better traffic management, with digital traffic lights and height restrictions promoting safer driving habits among locals [5] - The project is viewed as a valuable gift commemorating the 60th anniversary of diplomatic relations, reflecting the deep friendship between China and Mauritania [5] Group 3: Friendship Hospital - The Friendship Hospital, operational since 2010, has significantly improved healthcare access in Mauritania, with plans for expansion to include additional medical departments and equipment [6] - Various other "Friendship" projects, including road construction and agricultural initiatives, have been instrumental in addressing economic challenges faced by Mauritania [6] - Mauritania's officials express gratitude for China's support in infrastructure development, emphasizing the importance of continued cooperation for mutual growth [6]

Group 1 - The "Pingtan Strait Bridge" is the first true cross-sea super bridge in Fujian Province, with an investment of 1.13 billion yuan [1] - The bridge starts at the Pingtan main toll station in Fuzhou City and crosses the Haitan Strait, ending at the Pingtan Comprehensive Experimental Zone [1] - The "Hong Kong-Zhuhai-Macao Bridge" is a renowned bridge-tunnel project in China, known for its massive scale, unprecedented construction difficulty, and top-notch building technology [4] Group 2 - The "Hami 50MW Salt Tower Project" is a solar thermal power project built and operated by China Energy Construction Group, generating approximately 198 million kWh annually, enough to meet the electricity needs of nearly 100,000 households, while reducing CO2 emissions by about 160,000 tons per year [8] - The "China Sky Eye" is the world's largest single-dish radio telescope, with a reflective surface equivalent to 30 football fields, achieving a sensitivity 2.5 times greater than the second-largest telescope, significantly expanding human vision for exploring the origins and evolution of the universe [11] - The "Altash Water Conservancy Hub Project" is the largest reservoir in Xinjiang with a capacity of 2.25 billion cubic meters, taking 10 years to complete with an investment of 11 billion yuan, and is part of the 172 major water-saving and supply projects promoted by the State Council [14]

Core Points - The inauguration of the Bharat Jagdeo-Demerara River Bridge in Guyana marks a significant milestone for the local community, providing a modern transportation link and enhancing the quality of life for residents [1][6][9] - The bridge, measuring approximately 2900 meters, is the largest and most complex infrastructure project in Guyana to date, showcasing advanced engineering and construction techniques [9][11] - The project faced various challenges, including material sourcing and environmental conditions, which were successfully overcome by the construction team [9][11] Group 1 - The bridge's opening is celebrated by thousands of citizens, symbolizing a new era of connectivity and opportunity for the people of Guyana [1][6] - The bridge significantly reduces travel time across the Demerara River, allowing for a journey from new residential areas to Georgetown city center in about 30 minutes, thus improving overall happiness and economic prospects for the community [6][9] - The construction was led by China Railway International Group, which emphasized environmental protection and local workforce training during the project [11] Group 2 - The previous floating bridge, built in 1978, was inadequate for current traffic demands, often causing long delays for commuters [3][9] - The project involved extensive preparatory work, including geological surveys and innovative solutions to material challenges, such as adapting local sand for high-strength concrete [9][11] - The bridge's completion is seen as a transformative development for Guyana, enhancing trade and economic growth opportunities for the future [6][9]