Research On Rapid Modeling Of Railway Station Based On BIM Technology

In recent years,BIM technology has been applied more and more widely to the field of railway construction,and the successful implementation of a series of pilot projects has given a strong impetus to the construction and development of China’s railway digitisation.BIM technology as a multi-dimensional models information integration technology,it contains a variety of data informations about the project engineering entity from planning,designing,constructing and later operating and maintaining;with the information-rich BIM model,various professions can communicate and share information in a timely manner.Railway station is an important part of railway lines and is the basic production units of the railway transport industry,containing not only track structures,station roadbeds and other structures,but also numerous ancillary equipment,involving many professions and frequent interactions of information about them.Therefore,it is of great practical significance to apply BIM technology to railway station projects,and how to quickly realize the construction of railway station information model becomes the key to the application of BIM in this field.In view of this,this thesis investigates the rapid construction of BIM model for railway station,with the following main research content:(1)Overview of the basic BIM concept and analysis of its application for railway station projects.The basic concept of BIM is elaborated,the advantages of BIM technology application for various stages of railway engineering are analysed,the core modelling software of various factions of BIM is reviewed and compared,and a kind of software platform suitable for rapid modelling of railway station is selected.(2)Analysis of rapid construction techniques for BIM models on railway station.Revit secondary developments and Dynamo visual programming technology were studied and compared,and from the perspective of rapid modelling of station,the development of the main modules of the rapid BIM modelling software system for station was determined to be based on Revit secondary developments.Due to Dynamo’s superiority in data interaction,the reading and creation of the sleeper and fastener layout information in the turnout BIM component family and the rapid attachment of BIM component information are implemented in Dynamo.(3)The establishment of station SQL database and BIM component families.The SQL relational station database was created by object decomposition of the station infrastructure and examining the properties that the objects should have.The IFD-based BIM information models classification and cod standards are studied,and the classification and cod of various BIM components in station is realised;the characteristics of various BIM components in station and the characteristics of Revit family templates are analysed,and the family templates used for common station BIM components are summarised,and the corresponding family templates are used to realise the parametric information creation of various BIM component families.(4)Validation of railway station engineering examples.With the help of actual engineering,realising the rapid acquisition of station designs information,the one-key generation of the strand model,the rapid layout and numbering of the turnout model,the rapid generation of the platform model and the rapid position and layout of the ancillary equipment.The Navisworks software was used to integrate the results of each model,and the Lumion software was used to render the overall model and roam the 3D scene.