国内首创技术助力1400吨“钢铁翅膀”滑翔就位

Core Viewpoint - The article highlights the successful implementation of a pioneering sliding technology for the steel roof structure at the Dongying South Station of the Jinwei High-speed Railway, marking a significant innovation in large-scale roof engineering in China [1][2]. Group 1: Project Overview - The project is undertaken by China Railway Construction Engineering Group, featuring a final sliding unit that includes three steel trusses and an attached metal roofing system, weighing a total of 1,400 tons and spanning 195 meters [1]. - The sliding unit's installation required innovative techniques due to its heavy weight and long span, necessitating the crossing over an operational railway and a dense network of 27.5 kV high-voltage contact lines [1]. Group 2: Construction Techniques - The construction team employed a "ground assembly and overall cumulative sliding" process, transforming complex high-altitude and high-risk operations into safer ground work [1]. - The project involved ground-level assembly of sliding units and the installation of roofing and curtain walls, followed by the use of a sliding system composed of track beams, sliding vehicles, and hydraulic crawlers for the overall push [1]. Group 3: Technological Innovations - To achieve millimeter-level real-time control of the sliding process, an intelligent monitoring and command system was established, utilizing a network of vibrating wire strain sensors for data collection on sliding trajectories and structural stress [2]. - The project team developed several patents, including the "pre-assembled sliding installation device for steel structure roofs" and "welding device for steel structure roof construction," promoting the transformation of technological achievements [2]. - The application of these intelligent methods and innovative results not only ensured the success of the sliding operation but also created a replicable and promotable complete technology for the construction of complex railway station buildings [2].