`新的重大成就 I 型 ●双城经济圈经济 ●川渝共同实施 ●川渝: 总量超过8.7万亿 重点研发项目 类金融 元,两省市GDP今 257个,共享大 3000 家 年有望迈上10万 型科研仪器设备 上市 公 亿元新台阶 1.4万台(套) 250家 重要经济中心建设 实现新跨越 二是科技创新中心建设实现新进展，在全国跨区域协同创新版图中的地位更加彰显。西部（重庆）科学城、西部（成都）科学城实现联动联建，成渝中 线科创走廊等共建的重大项目积极推进，成渝综合性科学中心成为全国首个跨区域共建科创平台，共同实施重点研发项目257个，共享大型科研仪器设备1.4 万台（套），共建国际科技交流合作基地超100家，合作举办两届"一带一路"科技交流大会。 三是西部金融中心建设实现新发展，内陆金融开放合作体系全面构建。川渝集聚了各类金融机构超3000家，境内上市公司超250家，2024年两省市金融 业增加值合计超6100亿元，两省市贷款余额达17.8万亿元，较"十四五"初增长了57%，2024年为川渝共建项目授信超过1万亿元。 四是改革开放新高地建设实现新作为，充分激发现代化建设活力动力。197项改革集中联动措施深入实施，市场一体化 ...

Core Viewpoint - The completion of the first "four electricity" engineering house for the Chengdu-Chongqing middle-line high-speed railway marks the beginning of a critical phase for the project, which is part of China's significant high-speed rail network [1] Group 1: Project Details - The Chengdu-Chongqing middle-line high-speed railway is an essential component of China's "eight vertical and eight horizontal" high-speed rail network, with a total length of 292 kilometers [1] - The railway is designed for a maximum speed of 350 kilometers per hour, connecting multiple locations in Chongqing and Sichuan [1] Group 2: Impact and Benefits - Once completed, the railway will link several high-speed rail lines, enhancing the transportation network in the Chengdu-Chongqing region and significantly reducing travel time between the two cities [1] - The project aims to facilitate travel for local residents along the route, improving accessibility and convenience [1]

Group 1 - The Chengyu Middle Line High-Speed Railway will operate at a speed of 400 km/h, reducing travel time between Chengdu and Chongqing to 50 minutes upon completion [1] - The railway is a key part of China's "Eight Vertical and Eight Horizontal" high-speed rail network, with a total length of 292 kilometers and a design speed of 350 km/h [2][3] - The railway will connect with several existing and under-construction high-speed rail lines, enhancing the transportation network in the Chengdu-Chongqing area and supporting the development of the Chengdu-Chongqing economic circle [3] Group 2 - The CR450 high-speed train is expected to be the core technology supporting the 400 km/h speed target, with ongoing technological innovations and infrastructure verification [4] - The CR450 train has achieved international leadership in key performance indicators such as operational speed, energy consumption, noise levels, and braking distance, promising a better travel experience [4] - The CR450 train has completed various stages of development, including prototype testing and performance validation, in preparation for trial operations [4][5]

Core Insights - The Chengdu-Chongqing high-speed railway will operate at a speed of 400 km/h, significantly reducing travel time between the two cities to 50 minutes [1][3] - This railway is designed to accommodate future speed enhancements, making it the first high-speed railway in China with provisions for 400 km/h operation [1][4] - The high-speed railway is expected to enhance economic integration and collaboration in the Chengdu-Chongqing economic circle, promoting the flow of talent, capital, and technology [3][4] Economic Impact - The Chengdu-Chongqing region is projected to achieve a GDP of 87,193 billion yuan in 2024, accounting for 30.3% of the western region's economy, with a slight increase in its national contribution from 6.3% in 2020 to 6.5% [4][5] - The high-speed railway will facilitate a more flexible and optimized industrial chain layout, enhancing technological innovation and expanding the reach of high-end services [4][5] - The region is recognized as a key growth area in China, with significant government investment exceeding 11 trillion yuan since 2020 and over 800 major projects under construction [4][5] Strategic Importance - The Chengdu-Chongqing area holds a unique position in national development strategies, particularly in the context of the Western Development Strategy [5][6] - The high-speed railway is not only a transportation tool but also a critical infrastructure for national strategic security, enabling rapid mobilization of resources in extreme situations [5][6] - The development of high-speed rail networks is seen as a vital component in enhancing China's competitiveness on a global scale [6][7]

Core Viewpoint - The successful completion of the last concrete pouring for the Tujiao Hub Interchange Double-Line Bridge of the Chengyu Central High-Speed Railway marks a significant milestone for the project, laying a solid foundation for the entire line's operation [1][3] Group 1: Project Details - The Tujiao Hub Interchange Double-Line Bridge is located in Chongqing's Tongliang District, with a total length of 3,271.6 meters, crossing the Chongqing Third Ring Expressway and the Tong'an Expressway, featuring 92 piers and 2 abutments [1][3] - The continuous beam that was recently completed spans approximately 242 meters, making it the longest continuous beam in the Chongqing section of the Chengyu Central High-Speed Railway [1][3] Group 2: Technological Advancements - The project utilized an upgraded 6-meter intelligent cantilever bridge machine, which allows for longer segment casting in a single pour, making installation and removal more convenient, while enhancing structural safety and stability [3] 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 Chongqing North Station to Chengdu Station over a total length of 292 kilometers, with a designed speed of 350 kilometers per hour [3] - Upon completion, the railway will connect with several existing and under-construction high-speed rail lines, improving the transportation network in the Chengyu region and significantly reducing travel time for residents along the route [3]

Core Viewpoint - The successful completion of the continuous beam for the Tujiao Hub Interchange Double-Line Bridge of the Chengdu-Chongqing High-Speed Railway marks a significant milestone in the construction of this important high-speed rail segment in China [2][5][9]. Group 1: Project Details - The continuous beam measures approximately 242 meters in length, making it the longest span in the Chongqing section of the Chengdu-Chongqing High-Speed Railway [2][5][9]. - The Tujiao Hub Interchange Double-Line Bridge has a total length of 3271.6 meters and crosses over the Chongqing Ring Expressway and the Tong'an Expressway, featuring 92 piers and 2 abutments [2][5][9]. Group 2: Importance of the Project - The Chengdu-Chongqing High-Speed Railway is a crucial part of China's "Eight Vertical and Eight Horizontal" high-speed rail network, specifically serving the Yangtze River corridor [2][5][9]. - The main line of the Chengdu-Chongqing High-Speed Railway spans 292 kilometers and is designed for a maximum speed of 350 kilometers per hour [2][5][9].

Core Viewpoint - The successful completion of the continuous beam for the Chengyu Central Line high-speed railway marks a significant milestone, laying a solid foundation for the entire line's operation [1][5]. Group 1: Project Details - The Tujiao Hub Interchange Double-Line Bridge spans 3,271.6 meters and crosses the Chongqing Ring Expressway and Tong'an Expressway, featuring 92 bridge piers and 2 abutments [5]. - The continuous beam that was recently completed measures approximately 242 meters, making it the longest continuous beam in the Chongqing section of the Chengyu Central Line [5]. - The construction utilized an upgraded 6-meter intelligent cantilever bridge machine, improving efficiency by over 30% compared to traditional methods [5]. Group 2: Strategic Importance - The Chengyu Central Line high-speed railway is a crucial part of China's "Eight Vertical and Eight Horizontal" high-speed rail network, connecting Chongqing North Station to Chengdu Station over a distance of 292 kilometers with a design speed of 350 km/h [6]. - Once completed, the line will enhance connectivity with several existing and under-construction high-speed rail lines, significantly reducing travel time between Chengdu and Chongqing [6]. - The project is expected to facilitate the development of the Chengdu-Chongqing economic circle and contribute to the new pattern of western development in China [6].

Core Viewpoint - The construction of the Chengyu Central Line High-Speed Railway, particularly the Jianyang Tuojiang Grand Bridge, is a significant engineering project that utilizes an innovative thrust-free arch bridge design to enhance efficiency and reduce construction costs while meeting navigational requirements [1][3][4]. Design and Engineering Challenges - The design of the thrust-free arch bridge was chosen due to the poor load-bearing capacity of the mudstone and sandstone geological conditions along the Tuojiang River, which made conventional thrust bridges unsuitable [3][4]. - The design team faced a critical decision between a thrust-free arch bridge and a cable-stayed bridge, ultimately opting for the former due to its lower excavation volume, shorter construction period, and reduced costs despite less design experience [4]. Digital Modeling and Construction Techniques - The project employs Building Information Modeling (BIM) and virtual assembly technology to enhance the efficiency of assembling the arch ribs, which are composed of multiple steel pipes filled with concrete [5][6][8]. - The construction team utilizes a smart monitoring system based on BIM to ensure precise lifting and assembly of the 2,400-ton steel arch segments, achieving millimeter-level accuracy in height control during the lifting process [9]. Quality Control Measures - The bridge incorporates approximately 72,000 high-strength bolts, with an intelligent tightening system ensuring each bolt is tightened to the correct torque, thus preventing issues such as under-tightening or over-tightening [10][11]. - An intelligent temperature control system is implemented to monitor and adjust the cooling of concrete during pouring, mitigating the risk of cracking due to temperature differentials [12]. Project Timeline and Future Outlook - The Jianyang Tuojiang Grand Bridge is expected to be completed in the second half of this year, with the first high-speed train anticipated to traverse the bridge shortly after its completion [12].

Core Viewpoint - The construction of major projects in Sichuan during the "May Day" holiday is crucial for stabilizing economic growth and promoting high-quality development, with significant investments and progress reported across various sectors [1][4]. Group 1: Major Projects and Investments - The China (Mianyang) Science and Technology City Nuclear Medical Health Industry Park has a total investment of approximately 18.6 billion yuan, with an expected annual output value exceeding 50 billion yuan upon completion [1]. - In the first quarter of this year, Sichuan completed investments of 245.53 billion yuan in 810 provincial key projects, achieving an annual investment completion rate of 31% [4]. Group 2: Infrastructure Development - The Yukun High-speed Railway's key project, the Ma'anshan Tunnel, successfully passed through during the holiday, with strict safety measures in place to ensure zero accidents [1]. - The Xiyu High-speed Railway's Xiangyang No. 1 Tunnel has reached its designed length of 12.766 kilometers, with over 150 workers dedicating their holiday to advance the project [3]. Group 3: Renewable Energy Initiatives - The first grid-connected energy storage power station in Sichuan, the Aba Hongyuan Anqu Phase I Photovoltaic Project, is on track to achieve full capacity grid connection by May 15, with an expected annual power generation of 450 million kilowatt-hours [3].