Research And Development Of Auxiliary Decision System For Road Reconstruction Design Based On BIM+GIS

As the early construction of roads reach their designed service life,the road condition continues to decline,the damage of ancillary facilities and other problems become increasingly prominent,it is necessary to rebuild the road to improve its service level.There are many influencing factors on road reconstruction project.In order to assist road designers and road management units to make scientific and effective decisions on road reconstruction design scheme,this study proposes a control and evaluation method for road reconstruction design scheme based on Delphi method,analytic hierarchy process and fuzzy comprehensive evaluation method by considering the influencing factors of road reconstruction project design and road design decision requirements.Moreover,the road reconstruction design auxiliary decision system is developed based on BIM+GIS.The system uses SQL Server for data management,C#language under Visual Studio development environment for development,based on Super Map integrated BIM software model for two-dimensional and three-dimensional display.The system has realized database management function,user management function,basic information management function,project design program management function and program evaluation management function.24 secondary sub-functional interfaces are designed to assist decision-making in road reconstruction design.The model and the system are validated by taking the reconstruction design of a section of National Highway G204 Yanlu Line project as an example.There are 2961 pieces of spatial data including model data and 30574 pieces of topographic data.Attribute data includes 1319 pieces of basic road data,1081 pieces of road detection data,52 pieces of road disease image data and 7916 pieces of road reconstruction design data.Through the evaluation model of the system and its integration,the two alternative construction schemes obtained in the reconstruction design are compared and selected.The evaluation result of the first design scheme is good,the second design scheme is inferior,the first scheme is superior to the second scheme,and the scheme adopted in the actual project is the first scheme,which is consistent with the scheme adopted in the actual project,which verifies the effectiveness of the system.