Modeling And Application Of Mountain Road Tunnel Based On GIS-BIM Technology

With the development of graphic visualization technology and information technology,the information construction based on BIM(Building Information Modeling)has gradually become an important technical means for the development of highway tunnel engineering.In the process of highway tunnel construction,the traditional modeling has fallen behind.For the spatial aspect,GIS(Geographic Information System)breaks through the limitations of BIM 3D modeling lacking the actual topographic geological environment,and more intuitively reflects the real situation of highway tunnel.The 3D modeling of mountain road tunnel based on GIS-BIM has more practical application scenarios and great research significance.This article studies the creation of digital terrain,the construction of highway tunnel model and the three-dimensional visualization of the model,and summarizes the methods and applications of model construction in 3D platform.The main contents of this article include:(1)Firstly,the characteristics of different company GIS software are summarized,and the digital terrain model is simply analyzed.Secondly,the advantages and disadvantages of BIM core software are summarized,and the development trend of BIM software platforms is discussed.The advantages of the combination of the GIS-BIM in road engineering are put forward.(2)Digital elevation data based on obtaining real terrain,a method for rapidly collecting digital terrain data is proposed,and the data format is processed by the software Global Mapper,which realizes the rapid establishment of regional digital terrain model;based on the GIS-BIM combined 3D road tunnel modeling method,a rapid 3D modeling method for fabricated tunnels is proposed,which introduces fast,efficient and interactive modeling techniques into highway tunnel engineering.(3)Taking a high-altitude mountain road tunnel as an example,the method of creating terrain surface in AutoCAD Civil 3D platform,the framework flow of tunnel cross-section component construction,and the assembly idea of components are studied and summarized.Finally,he feasibility of the 3D modeling method is verified,and the basic road tunnel 3D modeling is realized.(4)Combined with the BIM model,the application method of the current stage model is explored,including the collision inspection and visual distance analysis of the design results.BIM collaboration platform makes efficient and accurate collision inspection possible,which can effectively reduce the occurrence of drawing errors and design content conflicts.At the same time,the BIM model is used to complete the 3D inspection of the distance of Highway tunnel.By studying the modeling of mountain road tunnels,this paper provides reference and reference for the realization of 3D modeling and visualization of similar mountain road tunnel engineering.It uses GIS-BIM model to provide services for the construction of mountain road tunnels in the future.It has an active role in promoting and enabling The project's decision-making and evaluation provide a reference basis.