Core Insights - The Tuojiang Grand Bridge, a key project of the Chengdu-Chongqing High-Speed Railway, successfully completed its main beam closure on November 10, marking a significant milestone in its construction [5][8] - The Chengdu-Chongqing High-Speed Railway is expected to be completed and operational by the end of 2027, with a maximum operational speed of 400 km/h, earning it the title of "the fastest high-speed railway on land" [5][9] Innovation in Design - The bridge features a world-first structural design that combines the large span of an arch bridge with the stability of a beam bridge, allowing for a unique "no thrust" self-balancing structure [6][7] - The main beam closure utilized a tensioning method, where the two sides of the bridge were gradually pulled together, requiring 12 hydraulic jacks exerting a force of approximately 5400 tons [7] Construction Techniques - The construction team employed advanced digital technologies for precise closure, achieving a positioning error within millimeters, likened to "embroidery in the air" [8] - A monitoring information system was developed to track critical data such as displacement and tension during the construction process, ensuring real-time adjustments and high precision [8] Project Progress - Following the bridge's closure, track laying is set to begin in May next year, indicating a significant acceleration in the overall construction of the Chengdu-Chongqing High-Speed Railway [9] - The railway line, part of China's "eight vertical and eight horizontal" high-speed rail network, spans 292 kilometers and connects key urban areas in Sichuan and Chongqing [9]

Core Viewpoint - The completion of the main beam of the Tuojiang Grand Bridge marks a significant milestone in the construction of the Chengyu Central High-Speed Railway, which is expected to be operational by the end of 2027, reducing travel time between Chengdu and Chongqing to 50 minutes [1] Group 1: Project Details - The Tuojiang Grand Bridge, located in Shizhong Town, Jianyang City, has a total length of 1,252 meters [1] - The bridge features an innovative design with a "Feiyan" style double-row bearing no thrust arch bridge structure, enhancing stability and balance [1] - Construction utilized virtual assembly technology for precise simulations, ensuring accurate completion of the bridge [1] Group 2: Construction Progress - Following the completion of the bridge, the project will move on to the construction of the bridge deck and auxiliary facilities, with track laying expected to start in May next year [1] - The overall progress of the Chengyu Central High-Speed Railway is on track, with key projects including "two tunnels and one bridge" advancing according to schedule [1] Group 3: Strategic Importance - The Chengyu Central High-Speed Railway is a crucial part of China's "Eight Vertical and Eight Horizontal" high-speed rail network, connecting major cities along the Yangtze River [1] - The railway line spans 292 kilometers, starting from Chongqing North Station and leading to Chengdu Station [1]

四川日报全媒体记者 吴聃 摄 ●成渝中线高铁预计2027年底建成通车 大桥合龙后，将转入桥面及附属设施施工，预计明年5月启动铺轨工作。目前，成渝中线高铁全线工程进展顺 利，包括沱江特大桥在内的"两隧一桥"控制性工程均按施工进度有序推进。 成渝中线高铁是我国"八纵八横"高铁网沿江通道的重要组成部分，线路自重庆枢纽重庆北站起，向西经渝川 多地，引入成都枢纽成都站，正线全长292公里。（记者 寇敏芳） ●最高运营时速有望达400公里 11月10日，在12台600吨连续千斤顶3小时作业后，成渝中线高铁控制性工程沱江特大桥主梁合龙。成渝中线 高铁预计2027年底建成通车，最高运营时速有望达400公里。届时，从成都至重庆将实现50分钟通达。 沱江特大桥位于成都简阳市石钟镇，全长1252米。项目创新设计飞燕式双排支座无推力拱桥结构体系，并基 于该结构体系深化研究设计出组合结构拱桥，让大桥如同巨弓横跨沱江，形成无推力自平衡稳定结构。施工中， 建设团队应用虚拟拼装技术，反复模拟演练，确保精准合龙。 ...

Core Insights - The Sichuan Provincial Development and Reform Commission reported that from January to September, 320 key projects in the Chengdu-Chongqing economic circle completed an investment of 377.31 billion yuan, achieving an investment completion rate of 85.77% [1] Investment Breakdown - Modern infrastructure projects completed an investment of 218.23 billion yuan, with an investment completion rate of 76.41% [1] - Modern industry and technological innovation projects completed an investment of 136.85 billion yuan, exceeding the target with an investment completion rate of 108.72% [1] - Cultural tourism, ecological, and public service projects completed an investment of 22.65 billion yuan, achieving an investment completion rate of 78.29% [1] Project Highlights - Key infrastructure projects include the successful topping out of the first "four electricity" building for the Chengdu-Chongqing high-speed railway and the completion of the main structure for the Suining North Station of the Chengdu-Dazhou-Wanzhou high-speed railway [1] - In the modern industry sector, the completion of the first phase of the 12-inch integrated circuit specialty process line in Chongqing High-tech Zone and the launch of the Sichuan Meida Kang Chinese medicine modernization technology industrial base were noted [1] - Ecological and public service projects include the completion of the Longxi River ecological restoration project and the main structure completion of the New Tian Port railway logistics center [1]

Core Viewpoint - The successful completion of the gas pipeline relocation project marks a significant milestone in the construction of the Chengyu Middle Line High-Speed Railway, facilitating the acceleration of the overall project [1][4]. Group 1: Project Details - The gas pipeline relocation project spans approximately 4.6 kilometers and involves complex intersections with various transportation facilities, including roads, railways, and greenways, with a total of 48 crossings [3]. - The project took 18 months from planning to completion, highlighting the technical challenges and the importance of energy security in conjunction with transportation infrastructure development [3][4]. Group 2: Strategic Importance - The D720 and D630 gas pipelines are critical for Sichuan Province, supplying about one-third of the natural gas for residential and commercial use in Chengdu, underscoring their strategic energy role [3]. - The relocation is considered a key task in the construction of the Chengyu Middle Line High-Speed Railway, recognized as one of the most challenging gas pipeline relocations in the region [4]. Group 3: Future Implications - The Chengyu Middle Line High-Speed Railway is a core component of the national high-speed rail network, designed for a speed of 350 km/h, and is expected to be completed by the end of 2027, significantly enhancing connectivity between Chengdu and Chongqing [7].

Core Insights - Multiple high-speed rail projects in Sichuan are progressing steadily during the National Day holiday, with over 30,000 construction workers on site [1][2] - Significant advancements have been made in the construction of the Xining to Chengdu high-speed railway, with 45% of the overall project completed [1] - The Chengdu North Station expansion and the Chengdu railway station capacity enhancement are ongoing, with all personnel committed to meeting project deadlines [1] Group 1 - The Xining to Chengdu high-speed railway has seen the completion of 6 out of 14 tunnels and 88% of bridge works, with overall project progress at 45% [1] - The Chengdu North Station has completed various supporting projects, including high slope protection and emergency response buildings [1] - The Chengdu railway station is being upgraded to enhance its capacity as a comprehensive transportation hub, with all machinery operating at full speed [1] Group 2 - The Xuyou high-speed railway project has implemented an intelligent production line, achieving 65% of box beam pre-fabrication and 53% of beam installation [2] - The Yukun high-speed railway's main tunnel and bridge works are completed, with 99% of box beam installation finished [2] - The next phase for the Yukun high-speed railway involves the commencement of ballastless track construction to ensure timely operation [2]

Core Viewpoint - During the National Day and Mid-Autumn Festival holidays, construction on six high-speed rail projects in Sichuan continues without interruption, with over 30,000 workers dedicated to advancing the projects [1]. Group 1: Project Progress - The construction of the Xining to Chengdu high-speed railway has made significant progress, with the completion of the last box girder on the 12-kilometer Hequzi Bridge, marking a key milestone [3]. - The overall progress of the Sichuan section of the Xining to Chengdu railway is at 45%, with 6 out of 14 tunnels completed, 88% of bridge works finished, and 70% of the roadbed works completed [3]. - The Chengdu North Station expansion project is actively progressing, with all personnel on-site to ensure the second phase of the station renovation is executed smoothly [4]. Group 2: Construction Techniques and Innovations - The construction site of the Xuyou high-speed railway employs intelligent production lines, achieving standardization of processes, automation of equipment, and visualization of management [4]. - The Xuyou high-speed railway project has completed 407 box girder pre-casts and 329 girder installations, representing 65% and 53% of the total, respectively [4]. - The Yukun high-speed railway's construction is entering a critical phase, with 99% of box girder installations completed and all main tunnel and bridge works finished [6].

Group 1 - The construction of the Chengyu High-speed Railway's key control project, the largest span and highest safety risk section, has successfully completed the final concrete pouring, marking the completion of all nine continuous beams in this segment [1][3] - The main span of the bridge over the Chuyong Expressway is 128 meters, consisting of a total of 64 cantilever pouring segments, utilizing a fully enclosed bridge construction machine for the cantilever pouring [7] - The project is part of the national "eight vertical and eight horizontal" high-speed rail network and will significantly reduce travel time between Chengdu and Chongqing, injecting new transportation momentum into the Chengdu-Chongqing economic circle [9] Group 2 - The construction will transition from "local breakthroughs" to a new phase of "overall completion," with a focus on quality and safety while accelerating project progress [7] - Innovative technologies such as fully enclosed bridge construction machines, intelligent synchronous control systems, and BIM technology have been introduced to enhance construction efficiency and quality control [7] - The Chengyu High-speed Railway has a total length of 292 kilometers and is designed for a speed of 350 kilometers per hour, with expectations for early operation [9]

Investment Overview - The total investment completed for 320 key projects in the Chengdu-Chongqing economic circle reached 332.36 billion yuan, with an investment completion rate of 75.29%, exceeding the scheduled progress by 8.62 percentage points [1][2] Modern Infrastructure Projects - Modern infrastructure projects completed an investment of 193.36 billion yuan, achieving a completion rate of 67.88%. Key developments include the completion of the first traction substation for the Chengdu-Chongqing middle-line high-speed railway and the opening of the Yuxiang high-speed railway from Chongqing to Qianjiang [1] Modern Industry and Technology Innovation Projects - Investments in modern industry, technological innovation, and ecological barrier projects totaled 126.66 billion yuan, with a completion rate of 90%. Notable achievements include the completion of the first phase of the Liangjiang Longxing intelligent manufacturing base and the production launch of the 8-inch silicon carbide chip project by Anjifa Semiconductor [1] Cultural Tourism and Public Service Projects - Cultural tourism, openness, and public service projects saw an investment of 12.34 billion yuan, with a completion rate of 77.88%. Significant projects include the completion of the connection road for the Western Land-Sea New Corridor and the main construction of the Heqi Road Pujiang River Bridge [2]

Core Viewpoint - The successful completion of the Jinyun Mountain Tunnel on September 27 marks a significant milestone for the Chengyu Central High-Speed Railway, ensuring timely operation of the entire line [2] Group 1: Project Details - The Jinyun Mountain Tunnel is located between Shapingba District and Beibei District in Chongqing, with a total length of 5,712 meters, designed as a single-tube double-track tunnel [2] - The Chengyu Central High-Speed Railway is a crucial part of China's "eight vertical and eight horizontal" high-speed rail network, with a total length of 292 kilometers and a designed speed of 350 kilometers per hour [2] Group 2: Economic Significance - The Chengyu Central High-Speed Railway serves as an important transportation link for the Chengdu-Chongqing economic circle, facilitating economic integration and development in the region [2]