CATIA-based bridge BIM creating method

Abstract

The invention discloses a CATIA-based bridge BIM creating method. The method comprises the steps of determining assembly and component name and layer division of a bridge BIM, adopting a Mindjet MindManager for drawing a thought induced graph, and exporting a .csv format file in an outline mode; dividing a BOM form into a coding system and a coding list, editing and arranging the two forms through EXCEL, adopting a linear classification method for performing layering division on the bridge BIM, generating assembly and component names and serial numbers, and clearing attribute information needing to be loaded into the assemblies and components; on the basis of a CATIA secondary development interface, importing the BOM form, and automatically generating a structural tree and a component file folder; according to the BOM form, automatically generating PRODUCT attributes and parameter attribute information inside PART; on the basis of the generated structural tree and the file folder, performing CATIA geometric model creating. The method has the advantages that non-geometrical information can be loaded and model files can be automatically generated in batches, creation works of geometrical information and non-geometrical information are separated, and modeling can be performed according to the actual requirement of the certain specific stage.

Description

technical field [0001] The invention relates to the technical field of bridges, in particular to a method for creating a BIM model of a bridge based on CATIA. Background technique [0002] The conventional BIM modeling method for bridges based on CATIA has the following shortcomings: (1) Usually, the 3D model is created in CATIA after analyzing the 2D CAD drawings, which is easy to cause errors in the assembly relationship and display in the structure tree. The non-geometric information is not standardized and unified, and there are even some problems such as omission of some components; (2) The information reflected in the two-dimensional drawings is incomplete, mostly geometric information. The BIM model created based on this lacks non-geometric attribute information and cannot be Ensure that the requirements of this specific stage are met; (3) The association between non-geometric information and the BIM model is generally achieved manually. This process is too cumbersome...

AI Technical Summary

Problems solved by technology

[0002] The conventional CATIA-based bridge BIM modeling method has the following disadvantages: (1) Usually, after analyzing the 2D CAD drawings, the 3D model is created in CATIA, which may easily lead to errors in the assembly relationship and the structure tree. The non-geometric information is not standardized and unified, and there are even problems such as the omission of some components; (2) The information reflected in the two-dimensional drawings is incomplete, mostly geometric information. The BIM model created based on this lacks non-geometric attribute information and cannot Ensure that the requirements of this specific stage are met; (3) Generally, the association between non-geometric information and the BIM model is realized manually. This process is too cumbersome and prone to mistakes, which is not conducive to the subsequent use of the BIM model

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