宁淮城际铁路关键节点新进展！跨连镇铁路门式墩钢盖梁吊装顺利完成

Core Points - The successful installation of the last steel cover beam at the Ninghuai Intercity Railway construction site marks a significant milestone for the project, laying a solid foundation for subsequent bridge and track construction [1][3] - The Ninghuai Intercity Railway is a key component of the Jiangsu Province intercity railway backbone and the Yangtze River Delta intercity rail transit network, which will enable a one-hour direct connection between Nanjing and Huai'an upon completion [3] Summary by Sections Project Overview - The Huanglou to Hongze Left Single-Line Bridge spans a total length of 5,136.551 meters and utilizes a design featuring three portal piers with 32-meter simply supported beams to cross the Lianzhong Railway [3] - The steel cover beams have a height of 3.2 meters, a width of 3.3 meters, and a length of 32.5 meters, with each beam weighing 137 tons, contributing to a total lifting weight of 160.28 tons for the operation [3] Construction Challenges - The installation faced multiple challenges, including the need for coordination with operational railway lines, high risks associated with concurrent operations, and the requirement for precise positioning of heavy components [3] - To ensure successful installation, the project team optimized the lifting plan, calculated the load-bearing capacity of the crane's foundation, and meticulously rehearsed the lifting process [3] Safety and Monitoring - A comprehensive management approach was implemented during the lifting operation, including a "one person, one post, one machine, one control" strategy and the use of drone aerial photography combined with an intelligent monitoring system for real-time oversight [3] - A 650-ton crawler crane was employed to ensure the steel cover beams were installed correctly in one attempt [3]