Core Viewpoint - The completion of the rail laying for the Xi'an to Shiyan High-Speed Railway (XSHSR) marks a significant milestone, establishing a solid foundation for the line's operational launch [1]. Group 1: Project Overview - The XSHSR spans a total length of 255.7 kilometers, with a designed speed of 350 kilometers per hour [6]. - The railway crosses the Qinling Mountains, featuring a high bridge-tunnel ratio of 95%, and includes 14 sections of steep gradients with a maximum slope of 25‰ [6]. Group 2: Construction Achievements - Since the official start of rail laying on September 8, the construction unit, China Railway Fourth Bureau, has optimized construction techniques and resource allocation, overcoming complex conditions such as dense long slopes and the longest single-hole single-line tunnel in the country, measuring 22.9 kilometers [6]. - The project achieved a record daily rail laying of 18 kilometers and an average daily progress of 8 kilometers, ensuring the successful completion of the rail laying [13]. Group 3: Strategic Importance - The XSHSR is part of the Wuhan to Xi'an High-Speed Railway (WXHSR), with the Wuhan to Shiyan High-Speed Railway (HSHSR) having commenced operations on November 29, 2019 [13]. - Once operational, the XSHSR will reduce travel time from Xi'an to Shiyan to under one hour and cut the travel time from Wuhan to Xi'an from 5 hours to approximately 2.5 hours, enhancing connectivity between the Guanzhong urban agglomeration and the Yangtze River middle reaches urban agglomeration [13].

Core Viewpoint - The successful completion of the rotation construction of the Baishan Village Super Bridge marks a significant breakthrough in the construction of the Liuzhou-Wuzhou Railway, which is crucial for enhancing transportation connectivity between Guangxi and the Guangdong-Hong Kong-Macao Greater Bay Area [1] Group 1: Project Details - The Baishan Village Super Bridge is the only rotating bridge along the entire Liuzhou-Wuzhou Railway, with the left and right beams weighing 7,480 tons and 6,745 tons respectively [1] - The bridge construction involved crossing busy railways and highways, necessitating advanced risk assessment and simulation techniques [1] Group 2: Construction Techniques - The construction team utilized 3D modeling technology for comprehensive simulation of the rotation process, accurately calculating the rotation angles, speeds, and stress conditions of the beams [1] - Real-time monitoring was implemented for critical aspects such as lifting equipment, temporary power supply, and high-altitude operations to ensure successful construction [1] Group 3: Economic and Regional Impact - The Liuzhou-Wuzhou Railway, with a total length of approximately 238 kilometers and a design speed of 160 km/h, is a vital component of the railway network connecting Liuzhou to Guangzhou [1] - The completion of this railway is expected to significantly enhance the regional transportation system and promote high-quality economic and social development in the surrounding areas [1]

Group 1 - The Chang-Jiu High-Speed Railway's Lushan South Station project, constructed by China Railway Construction Corporation, has successfully completed the overall lifting of the steel structure roof, marking a transition to the metal roofing and decoration phase [1] - The total area of Lushan South Station is 7999.1 square meters, featuring a design that combines Chinese and Western architectural elements, with a roof that has a traditional Chinese curved shape [1] - The steel grid structure lifted measures 122.2 meters in length, 52 meters in width, and weighs 420 tons, with a maximum lifting height of 13.95 meters [1] Group 2 - The Chang-Jiu High-Speed Railway spans 138 kilometers with a design speed of 350 kilometers per hour, forming a crucial part of the national railway network plan [2] - The railway will include five stations, three of which are newly constructed, and is expected to be operational by March 2027 [2] - The completion of the railway is significant for Jiangxi Province's integrated transportation system and will enhance connectivity with the Guangdong-Hong Kong-Macao Greater Bay Area [2]