Core Viewpoint - The steel truss girder of the Hanjiang Grand Bridge for the Xi-Shi High-Speed Railway in Shiyan, Hubei, is about to be completed, marking a significant milestone in the construction of this railway project [1][2][3][4][5] Group 1 - The Xi-Shi High-Speed Railway is a crucial infrastructure project aimed at enhancing transportation connectivity in the region [1][2] - The completion of the steel truss girder is expected to facilitate the overall progress of the railway construction [3][4] - The Hanjiang Grand Bridge is a key component of the Xi-Shi High-Speed Railway, showcasing advanced engineering techniques [5]

Core Viewpoint - The completion of the concrete pouring for the Hanjiang Grand Bridge marks a significant milestone for the Xi'an to Shiyan High-Speed Railway (referred to as "Xi-Shi High-Speed Railway"), establishing a foundation for the full line's connectivity [1][3]. Group 1: Project Overview - The Hanjiang Grand Bridge is the largest span beam and truss combination cable-stayed bridge in China, located in Shiyan City, Hubei Province, with a total length of 917.45 meters and a main span of 420 meters [1]. - The bridge features two main towers, each standing at a height of 186.5 meters, designed by China Railway First Survey and Design Institute Group Co., Ltd. and constructed by China Railway 11th Bureau Group Co., Ltd. [1]. Group 2: Construction Challenges and Innovations - The construction faced significant challenges due to complex geological conditions and environmental factors, including high slopes, hard rock foundations, and large volume concrete works [2]. - A technology research team was established to overcome various technical difficulties, resulting in 54 patent applications and advancements in construction techniques, including intelligent temperature control for large volume concrete [2]. Group 3: Environmental Considerations - The project emphasizes ecological protection and green construction practices, with measures taken to minimize environmental impact during construction, such as conducting work during dry seasons and using ships for mud storage [2]. Group 4: Economic and Strategic Importance - Upon completion, the Xi-Shi High-Speed Railway will create a convenient high-speed rail corridor between Xi'an and Wuhan, reducing travel time from 5 hours to approximately 2.5 hours, thereby enhancing connectivity between urban clusters and supporting national development strategies [3].