Research On Bridge Parametric Modeling And Model Conversion Based On BIM

As a new information technology,BIM technology can greatly improve the informatization and intelligence level of the construction industry,so it has a broad prospect in the entire life cycle of construction engineering.Bridge engineering is an important branch of the construction industry.At present,China has to achieve the development goal of "smart bridge".It is very important to carry out the application research of BIM technology in bridge engineering.The bridge information model is the most critical and basic work to develop BIM technology.Therefore,this paper focuses on the bridge BIM model and mainly carries out the following research work:(1)Analyze the characteristics of BIM technology,compare the BIM software mainly used in bridge engineering,and finally choose Autodesk Revit as the modeling software studied in this article.Contrast and analyze the two methods of Revit parametric modeling.For the continuous rigid-frame bridge with variable cross-section,the working mode combining Revit and Dynamo is used to realize the parametric rapid modeling of bridge components.(2)Analyze the characteristics and composition of bridge information and introduce information classification and coding methods.Under China’s CBIMS standard information classification and coding system,at the same time,refer to China’s municipal industry BIM implementation guide to split bridge components and information on continuous rigid-frame bridges with variable cross sections Classification and coding.Use Dynamo visual programming to quickly integrate the bridge information data in external Excel into Revit,further improve the batch entry efficiency of the information data in the BIM model.(3)Analyze the data interaction between the BIM model and the finite elementanalysis model,and study the method of model conversion between Revit and ANSYS software;In the Revit API platform,combined with external programming software Visual studio,a data conversion plug-in was developed for the second time,which successfully realized the conversion from the bridge BIM geometric model to the finite element analysis model.