Lightweight display of railway four-electricity BIM model based on glTF format and WebGL technology

Aiming at the problems of large volume of railway four-electricity BIM model, high computer performance requirements and low data interaction efficiency, a research method of lightweight display of railway four-electricity model based on glTF format and WebGL technology was proposed. This method realizes the lightweight display of the railway four-electricity BIM model on the browser side through the format conversion of the model, the development of the Three.js rendering engine, and the design of the user interaction function. The research results show that this method reduces the size of the model while completing the model format conversion, and realizes the lightweight display and user interaction functions of the model on the browser side. This is conducive to the further development of the railway four-electricity information visualization platform and promotes the utilization of the railway four-electricity BIM model.