Research on railway BIM platform framework based on homemade graphics engine

At present, BIM platforms rely on foreign software. Homemade software and industry applications are mostly secondary developments, which present stranglehold problems caused by interruptions to the software supply. To solve the problem, key technical research on the 3D integrated design of railway engineering was stuedied based on homemade graphics engines to propose an innovative railway BIM platform framework. The entire process was completed from the top-level design to the engineering verification of the platform. The co-designed mechanism of a "center model and link" hybrid mode was constructed, which solved the difficulties of data management and increment synchronization at a large scale, achieving teamwork among surveying and mapping, alignments, and bridges. The results of this study could provide strong support for the development of BIM software for a whole railway and all majors.