Abstract:In order to align with the trend of digital transformation in the engineering industry, taking the S20 Outer Ring Taihe Road Elevated Road Repair and Maintenance Project as the background, the practical application of BIM technology in the project is studied. By establishing a digital collaboration system during the design and construction phases, the application of technologies such as BIM modeling, oblique photography, process simulation, handover simulation, progress visualization and digital sand table are implemented to effectively enhance the design quality and reduce the rework during the construction phase. Simultaneously, by adopting the digital sand table integration technology, a digital asset foundation based on BIM is formed, providing the necessary support for the subsequent construction of digital operation and maintenance and digital twin systems.