| Under the construction climax of a new round of Railway Engineering in China,the modern design theory of railway line selection requires the transformation of railway line selection design from "delivery drawing" to "delivery model".The emergence of digital three-dimensional technology with BIM as the core concept has provided strong technical support and new driving force for railway line design.Therefore,based on this idea,based on Auto CAD Civil 3D platform and Autodesk Revit platform,this paper studies the railway 3D modeling method based on BIM platform.The main research work is as follows:(1)This paper studies the application potential and value of Auto CAD Civil 3D platform in BIM software in railway line design,explores its conjunction with railway industry,and applies it to railway line 3D modeling.In view of the actual project of the Sichuan Tibet railway,the Civil 3D and Revit BIM platform are used as the auxiliary to model the route scheme,and finally the integration of Bim and 3DGIS is integrated for 3D roaming display.(2)Based on the Civil 3D,the 3D modeling method of the long and large strip line scheme is studied;according to the line planning scheme,the 3D visualization method of the subgrade and the 3D scheme assembly method of the line are studied,and the BIM data interface based on the external design scheme is explored.(3)This paper studies the secondary development technology based on Revit API,realizes the establishment of model database and parametric modeling method of bridge,tunnel,track and other line structures,and realizes the rapid creation,automatic positioning and assembly of line structures and the data interface of external design scheme by using Revit secondary development.(4)The integration of three-dimensional design scheme is realized.The BIM model and terrain BIM model are seamlessly spliced,the output interface of BIM scheme is studied,and the big data dynamic rendering and roaming of 3D design scheme are realized in infraworks 3DGIS. |
PDF Full Text Request