Research On BIM Technology Of Railway Geotechnical Structure And Geological Modeling

With the continuous development of China’s railway construction,the corresponding design and construction technologies also need to be improved and upgraded.Since its inception,BIM technology has demonstrated its strong capabilities in the field of construction engineering.The use of BIM technology to guide the application of railway engineering in the whole life of design,construction and operation and maintenance is an imperative development trend.However,China is still in its infancy in the application of railway BIM technology with many problems and development space.In this paper,the research status of railway BIM technology and 3D geological modeling at home and abroad is fully investigated,and the problems of BIM technology in domestic application,especially in railway application,is also analyzed.This paper also proposes corresponding solutions for various aspects.Based on the related issues,this paper discusses the feasibility and advantages of the Railway BIM Forward Fesign Platform to solve the current domestic railway BIM technology application problems,and determines that the platform uses WEB-side technical support and B/S structure based on Tomcat+MySQL+JS method to build up the program.Meanwhile,the advantages and disadvantages of the current mainstream 3D geological modeling methods are compared and analyzed,and the development plan of geological modeling software supported by C# and JavaScript as the language,OpenGL and WebGL as the tools is determined.The modeling algorithm using programming means,including triangulation,mesh optimization,voxel modeling,surface intersection and spatial interpolation,is studied to determine the modeling algorithm flow.And on the Visual Studio 2017 platform,using C# as the background language,WebGL as the visualization tool,the interface of the 3D geological modeling system is designed.It implements basic functions including data import and modification,model generation and operation,virtual drilling interpolation,section cutting and stratigraphic line extraction,output interface and software interaction.The defects of traditional BIM geological modeling software that are difficult to perform complex mechanical design calculations are improved.The data transmission interface is opened to the mechanical computing platform,and the interaction between BIM modeling and BIM calculation is realized.