Core Points - The successful rotation of the continuous beam across the Longhai Railway marks a significant milestone for the Xi'an East Station and the Southwest Liaison Line of the Xi'an to Ten High-speed Railway project, laying a solid foundation for subsequent engineering progress [2][3] Group 1 - The rotating bridge is a critical and challenging engineering component of the Xi'an to Ten High-speed Railway, being the only rotating bridge that crosses an operational railway line along the entire route [3] - The construction area for the rotation is only 5.3 meters from the safety boundary of the main line, presenting high safety risks and demanding precision in construction technology [3] - To ensure safety and precision during the rotation, the project team utilized BIM technology and software modeling to create a dynamic simulation of the entire rotation process [3] Group 2 - Prior to the official rotation, the project team conducted a trial rotation to collect and adjust parameters, optimizing the rotation process and enabling visual risk management [3] - During the official rotation phase, an information system was employed to monitor the real-time position, speed, and angle of the rotating structure, achieving millimeter-level precision in alignment with design requirements [3] - Comprehensive safety measures were implemented, including electronic intrusion radar barriers, vehicle warning systems, and fully enclosed protective canopies, ensuring a secure construction environment near the operational line [3]

Core Insights - The successful rotation of the 2×64 meter T-beam bridge on the Xiongxin High-speed Railway marks significant progress in the construction of the Xiongbao section, laying a solid foundation for the full line's connectivity [1][2] Group 1: Project Details - The bridge, located in Baoding City, Hebei Province, weighs 8,761 tons and has a total length of 129.5 meters, with a rotation angle of 39 degrees, making it a key control project for the Xiongxin High-speed Railway [1] - The construction faced challenges due to the high operational density of the Beijing-Guangzhou High-speed Railway, necessitating work during late-night hours when trains were not in operation [1][2] Group 2: Technological Innovations - The project team collaborated with top domestic bridge experts to innovate a "no-transition structure" rotation scheme, which streamlined the construction process and reduced costs by eliminating the need for temporary structures [2] - Advanced technologies such as BIM for 3D simulation and intelligent monitoring systems were employed to ensure precision during the rotation process, allowing for real-time tracking of stress and displacement changes [2] Group 3: Strategic Importance - The Xiongxin High-speed Railway, spanning 342 kilometers with a design speed of 350 km/h, is a crucial component of the regional high-speed rail network in Xiong'an New Area and the national "eight vertical and eight horizontal" high-speed rail framework [2] - Upon completion, it will connect with other major railways, alleviating congestion in the Shijiazhuang to Taiyuan segment and enhancing the high-standard Jingkun corridor from Beijing through Xiong'an to various key cities [2]