Abstract:Aiming at the problems in the construction of complex curved surface arch-shell steel truss bridges, such as insufficient spatial coordination, fragmented information transfer, and difficulties in precision control, a systematic solution of BIM technology is explored. Taking the Jiuzhi Bridge as the background, the BIM visualization, parametric design, construction simulation and collaborative management platforms are comprehensively utilized to conduct the research on the review and visual handover of drawings, parametric design of steel sheet pile cofferdams for deep foundation pit, comparative selection of hydraulic synchronous sliding schemes of steel truss girders, innovation of fish-bellied curved surface box-beam support system, and detailed design and digital processing of steel structures. The innovative design of a 15-m deep foundation pit steel plate cofferdam is realized, which breaks through the conventional 10-m application limit. The optimal scheme of hydraulic synchronous cumulative sliding for steel truss girders is determined. The curved distribution beam support system is innovatively designed to solve the alignment control challenges for hyperboloid box girders. A digital processing system of steel structure is established to enhance the processing accuracy of curved surface components. The integrated application of BIM technology effectively solves the key technical difficulties in the construction of complex bridge structures, providing a reference for similar projects.
