Research On Modeling Technology Of Beam And Column Reinforcement Based On Revit Secondary Development

With the development of computer technology and Internet technology,building information modeling(BIM)technology has been widely used in various stages of construction engineering,including design,construction and operation and maintenance.However,in the manual modeling stage,there are still challenges in the three-dimensional modeling of steel bars.There is still a lack of appropriate methods and standardized software tools to realize the three-dimensional modeling of steel bars,and the modeling process is very complicated.The type of reinforcement and the shape of the model are very complex,which further affects the model creation and structural deepening design.Therefore,to improve the efficiency of steel modeling in BIM model,this paper uses Visual Studio 2019 software and mainstream BIM software Revit and uses C # class library and Revit API technology to develop a WPF interactive window reinforcement plug-in for beam and column reinforcement problems.It can generate various types of steel bars in Revit and form a complete model of beam and column,thereby expanding and enhancing the function of Revit and improving the efficiency of steel modeling.The specific research contents of this paper are as follows.(1)The mainstream BIM modeling software is compared and analyzed,and finally Revit software is selected as the secondary development deepening design platform.The detailed design method of longitudinal reinforcement in column based on BIM parametric design is studied.Combined with the distribution characteristics and structural requirements of column corner reinforcement and side reinforcement in plane construction drawing,the corresponding parametric reinforcement algorithm model is proposed and established.The deepening design method of longitudinal reinforcement in variable cross-section column is studied,and the parametric algorithm model of longitudinal reinforcement in variable cross-section column is proposed and established.Combined with the structural requirements of stirrups and additional stirrups in the plane construction drawing,the deepening design method of stirrups and additional stirrups in the column is studied,and the parametric model of stirrups and additional stirrups is established.Using the written program to extract the column model information,calculate the range of the stirrup encryption area and the non-encryption area.(2)The detailed design method of longitudinal reinforcement in beam based on BIM parametric design is studied.Combined with the structural requirements of longitudinal reinforcement in beam construction drawing,the appropriate coordinate system is selected,and the parametric model of longitudinal reinforcement is established in ordinary continuous beam and variable cross-section continuous beam.The deepening design method of double-limb hoop and four-limb hoop in beam is studied,and the appropriate coordinate system is selected to establish the parametric model of stirrup in beam.Using the written program to extract the beam model information,calculate the range of the stirrup encryption area and the non-encryption area.The detailed design method of the reinforcement in the beam is studied,and the parametric model of the reinforcement in different situations is created by combining the structure of the reinforcement in the flat construction drawing.Combined with the construction requirements of the negative reinforcement at the top of the beam in the flat construction drawing,the information of the beam model is obtained,the number and spacing of the reinforcement are calculated,and the parametric model is created.(3)The WPF interactive window for rapid modeling of beam-column reinforcement based on XAML language is developed,which is simple and intuitive and easy to operate.Based on engineering examples,the reliability of the beam-column reinforcement modeling method is verified.Based on the function of Revit detail table,the secondary development is carried out,and the Excel table with steel bar engineering quantity can be derived.Using Navisworks software,the collision detection and analysis of beam-column steel bar model is carried out,and the detection report is derived to facilitate the optimization of steel bar.