成渝中线高铁最长桥迎新进展

Core Viewpoint - The completion of the 6000-ton tie-rod arch bridge on the Chengdu-Chongqing High-Speed Railway marks a significant milestone, ensuring the project remains on schedule for timely operation [3][4]. Group 1: Project Progress - The Chengdu-Chongqing High-Speed Railway, part of China's "Eight Vertical and Eight Horizontal" high-speed rail network, spans 292 kilometers with a design speed of 350 km/h [3]. - The Longquan Grand Bridge, the longest bridge on the Chengdu-Chongqing High-Speed Railway, measures 14 kilometers and connects various districts in Chengdu [3]. - The bridge's design incorporates a 25‰ slope to accommodate existing municipal roadways, leading to the selection of a 72-meter tie-rod arch bridge structure for construction [3]. Group 2: Construction Status - The successful completion of the beam placement provides valuable experience for similar bridge constructions and facilitates the ongoing work on the entire line [4]. - Currently, 25 tunnels have been completed, and 47 bridges have been connected in the Sichuan section of the Chengdu-Chongqing High-Speed Railway, which is now entering critical phases of station buildings and track laying [4].