Research On The Completeness Of Bridge Engineering Model Information Based On BIM

As an important part of national infrastructure and a node of the transportation system,the emergence of BIM technology has solved the increasing need for intelligence in bridge engineering.As bridge engineering has many participants,complex structural forms,high technical standards and large amount of information,its standardized and regulated BIM model is an important cornerstone for the wide application of intelligent technology.Therefore,this paper introduces BIM technology and computer technology into the information integrity check of bridge models,studies the integrity check of bridge engineering information models based on BIM,establishes and improves the bridge model information integrity check process,the main work content and conclusions are as follows:(1)By selecting existing design specifications and model delivery standards in bridge engineering and using the NLPIR word separation system to separate and annotate the text,the attributes to be included in the information completeness of BIM models applied to the bridge domain are clarified.With the help of the ontology editor Protege and SWRL(Semantic Web Rule Language),knowledge modelling is used to construct the ontology model for information integrity check and to rationalize the logic of component and attribute integrity check in the BIM model,providing knowledge and rules for the later check of bridge component information completeness.(2)Based on the Industry Foundation Classes(IFC)standard,the bridge component integrity check information is extended by using Bentley software’s EC technology and extending the attribute set,designing an attribute information plug-in in the form of a component structure tree,realizing the extension of custom geometry,identification and design information for bridge components based on the IFC standard,and exporting engineering standard files with extended information by setting up mapping files for the corresponding IFC standard.(3)Study of the IFC-ontology conversion and ontology mapping approach.IFC files containing extended information are transformed into ontology files by means of semantic transformation,and the required information is expressed and transformed through the establishment of ifcOWL ontology and mapping rules,generating an instance ontology based on the information integrity check model,which serves as the data source for the implementation of the information integrity check.(4)The design of the bridge engineering model information integrity check platform and its functions are carried out Using C#programming language and database technology to enable interactive querying and filtering of model information,as well as to provide various methods for model information integrity check.Finally,the results of the platform review are combined with the results of ontology reasoning to improve the efficiency of the information completeness review,and to verify the effectiveness and accuracy of the information completeness review methods.