国内首次应用人工智能为在营铁路桥梁“移旧换新”

Core Viewpoint - The application of artificial intelligence (AI) in the replacement of railway bridge beams marks a significant advancement in China's railway infrastructure, providing a new solution for upgrading existing railways [1][4]. Group 1: Project Overview - The Shaoxing Intercity Railway, which utilizes the existing Xiaonong Railway, features the Keqiao Station as the first elevated intercity station added to an operational railway [1]. - The project involved replacing concrete beams in the "throat area" with steel box beams due to the expansion from 2 to 4 tracks, presenting high technical difficulty and safety risks [1]. Group 2: AI Technology Implementation - The project introduced an AI system based on digital twin technology, creating a 3D model with 40 high-precision sensing points to collect real-time data on beam posture, achieving millimeter-level accuracy [4]. - The AI system consists of three modules: perception, simulation, and control, enabling real-time monitoring, visual simulation of the construction process, and automatic correction of beam movements [4]. Group 3: Engineering Achievements - During the construction, a total of 4,086 tons of old beams were successfully removed, and 4,389.6 tons of new beams were installed, with height and horizontal deviations controlled within 2 mm and 3 mm, respectively [7]. - The project team collaborated with universities and research institutions to innovate construction processes and develop specialized equipment, significantly reducing the time required for beam pushing and lateral movement [7].