Study On The Modeling Of Narrow-gauge Turnout Used For Construction Of Rail Transport Line Based On BIM

As the informatization tide engulfs the entire world,the concept of Building Information Modeling has appeared in the housing construction field,solving the problems such as information loss,expressive fuzziness and inefficiency encountered in the design of buildings by applying traditional CAD technology to a great extent.With the 3D informatization model of parameterization,visualization and integration as its core,BIM technology runs through the full life circle of design,construction,and operation & maintenance management of buildings,and greatly increases the production efficiency and construction quality.Drawing lessons from the great success achieved in the housing construction field,the railway design industry has also started the application research of BIM technology,but currently at the exploration stage,and its advantages of 3D digital design have not been reflected.For this reason,this paper tries to use BIM technology to carry out modeling method studies on the construction of narrow-gauge turnout in the following aspects:(1)Based on the summary of concept and characteristics of BIM technology,this paper analyzes the research background,significance and domestic as well as foreign research status of designing narrow-gauge turnout by applying BIM technology.(2)The article introduces the basic theory of BIM technology,and studies the methods of how to build the BIM model of narrow-gauge turnout based on Revit platform;and puts forward the methods of how to perform secondary development on Revit to expand its function.(3)According to the structure of narrow-gauge turnout,this paper selects suitable Revit family models to create the family library of narrow-gauge railroad switches.(4)The article summarizes basic operation methods of realizing reference line drawing,family case creation,as well as family filtration and positioning by Revit API,while combining with the structural characteristics of narrow-gauge turnout toselect the appropriate method to create a plug-in in the Revit software,which can realize the automatic design and assembly of the BIM model.(5)The article performs the preliminary research and application of BIM model of narrow-gauge turnout at the design,construction,and operation stages of the project.