新渝万高铁蔡家沟双线特大桥主跨合龙

Core Viewpoint - The successful completion of the main span of the Caijia Gorge Double-Line Bridge marks a significant milestone for the Chongqing-Wanzhou High-Speed Railway, ensuring the project remains on schedule for timely operation [1][2]. Group 1: Project Overview - The Chongqing-Wanzhou High-Speed Railway is part of China's "Eight Vertical and Eight Horizontal" high-speed rail network, connecting Chongqing East Station to Wanzhou North Station over a total length of 251 kilometers with a design speed of 350 kilometers per hour [2]. - The Caijia Gorge Double-Line Bridge, located in Fuling District, spans approximately 2,113 meters and is considered a critical and challenging engineering component of the railway [2]. Group 2: Construction Challenges - The bridge construction faced numerous challenges due to its location in a hilly valley area, which included risks such as falling rocks, landslides, and adverse geological conditions [2]. - The project team successfully addressed various construction difficulties, including precision control for high pier construction and temperature management for large-volume concrete, while introducing new technologies and methods to facilitate progress [2]. Group 3: Economic Impact - Once operational, the Chongqing-Wanzhou High-Speed Railway is expected to significantly enhance connectivity between the urban areas of Northeast Chongqing and the main urban area, greatly benefiting local residents and promoting economic and social development along the route [4].