Research On Auxiliary Layout Design Of Metro Station Based On BIM Technology

A new round of rail transit construction has swept a large number of cities.In the process of urban rail transit design,the rise of BIM Technology provides new ideas and methods to solve the unavoidable problems in the traditional two-dimensional design.As an important part of urban rail transit,subway stations are distributed in the central urban areas of the city.The surrounding environment is sensitive and the structure is complex.They can give full play to the advantages of BIM Technology,such as visualization,coordination,simulation and optimization,so as to achieve professional application.Application based on the preliminary design stage,the subway station of Revit BIM software 3d parametric design function and the secondary development technology,realization of the subway station main body structure,ancillary facilities and special equipment of fast forward layout design,build a parameterized geometric size,functional attributes,space layout correlation and can be adjusted interactively subway station building information model.The main research contents are as follows:(1)Based on the differentiation and summary of the main elements of the station,based on the constraint relationship between the whole and the parts and the components of the station,the primitive model was divided and merged,and a universal primitive model of the subway station was extracted.(2)According to the function of the infrastructure in the station and the spatial coupling constraint relationship between the components,the three-dimensional parametric expression is realized by Revit software to meet the mutual restriction and interaction among the components of the station.Building a library of subway station primitives model components highlights the relationship between model building efficiency and components.(3)Through the Revit secondary development method,the basic functions of layout design of subway station can be parameterized according to the design ideas and conception process of designers,and the function of positive layout design of subway station based on BIM can be achieved.(4)After the rapid layout of the components of the subway station is realized,the interactive design tool is provided to edit and modify the 3d model,which can effectively express the designer's design ideas and automatically handle the constraint relations and structural conflicts.