In response to the common issues in practical training in vocational engineering construction courses, such as dangerous operation of training equipment, insufficient number of training equipment, and ineffective teaching, a vivid and interactive virtual simulation training system was developed using Unity3D software, taking the U-shaped bridge abutment in the course of Bridge Engineering as an example. Detailed introduction to the development and design process of 3D model establishment, ZSpace device adaptation, file format conversion, model rendering and disassembly, model zooming in and out, script writing and function implementation, UI interface design, etc., in order to achieve immersive interaction functions such as free observation, assembly disassembly, and ZSpace integrated VR virtual experience in the virtual simulation training system. The practical results show that the interactive effect simulated through the simulation training system is superior to that of the physical system, which can enhance the sense of experience, improve learning enthusiasm, and deepen the understanding of the knowledge points in Bridge Engineering Drawing Recognition. After the system is successfully established and applied in the training and teaching process, it will provide an important reference for the training and teaching of relevant courses for students majoring in road and bridge engineering, and also enhance the cultivation of high-quality skilled personnel in engineering majors in vocational colleges.