Research On Automatic Generation And Application Of Various Subway Entrance And Exit Models Based On Revit

In the information age,BIM(Building Information Modeling)technology provides a foundation for the realization of smart and digital construction transformation in the construction industry,and plays an important role in promoting building information technology.Revit is one of the most widely used BIM software in the domestic construction field.Based on the 3D model established by Revit,the synergy of BIM technology can realize the collaborative work of different disciplines such as architecture,structure,equipment(plumbing and electricity),etc.Professional software leads to the defects of repeated mold turning;it provides a basis for the research on the application of BIM technology in construction and postoperation and maintenance management;and promotes the coordinated management of its entire life cycle.The construction of urban rail transit in my country is developing rapidly,and the development of BIM technology provides new ideas and methods for it.However,the structure of the subway project is complex,the modeling is difficult,and the efficiency is low;in terms of solid component modeling,there are no common subway component types in the family library provided by Revit;in terms of creating steel bars,it is difficult to directly create manually,and some plug-ins It is limited to conventional components,and the reinforcement of specialshaped components is not involved for the time being,and it still needs to be supplemented;so at present,there are few projects using Revit modeling in subway engineering cases.Therefore,based on the.NET platform,this paper uses C# programming language combined with Revit API for secondary development,and proposes several different forms of automatic generation methods for subway entrance and exit models.Analyze the characteristics of construction drawings of several different forms of subway entrances and exits,and propose the secondary development of Revit software by manual interaction.Only by manually picking the bottom or roof baseline,use the Win Form interface in C# to create a general form,and automatically generate several different forms of The solid3 D model of the bottom plate,top plate,side wall and its detailed structure;input the corresponding steel bar parameters in the general form,and complete the corresponding whole structure on the basis of the solid model(including: special-shaped plate,inclined plate,sump in the bottom plate Automatic generation of steel bars corresponding to slabs,special-shaped walls,roofs and roof haunches),and complete the automatic generation of the overall steel bar model of subway entrances and exits;apply this method to actual projects,create 3D models of subway entrances and exits,and integrate algorithms in Revit.Expand the functional area,customize the Ribbon control of subway entrances and exits;realize the statistics of engineering calculation through secondary development,and export Excel tables.It is verified that this algorithm can significantly improve the modeling efficiency of the 3D model of subway entrances and exits,and it is feasible to quickly model in the design stage,which provides a basis for the use of BIM technology in subway engineering.