Research On Three-dimensional Design Method,Standard And Application Of BIM Technology Based On Steel Truss Bridge

The municipal bridge project has the characteristics of large-scale construction,strong professional comprehensiveness,many participating units,and complicated technology.There are greater implementation risks in design,construction period and economy than general projects.Therefore,it is very important to coordinate and control all aspects of project implementation,and the whole process should be deployed in a low-cost and high-efficiency way as much as possible.In order to better solve this problem,BIM technology is applied to the field of bridge engineering construction to break the drawbacks caused by traditional technologies.Based on the research project of Zengjiayan bridge project I: BIM design and implementation methods,standards and Application Research of municipal engineering,this study explores the BIM application of the main bridge rigid suspension stiffening continuous steel truss road rail dual-purpose bridge,and carries out the research on the modeling methods,standards and application of the steel truss beam bridge based on BIM Technology,The research work and main conclusions are as follows:(1)By referring to relevant literature,materials and other information,the introduction of Dynamo software based on the Revit platform is introduced,and the advantages of choosing Dynamo software as a parametric modeling platform are explained by examples,which lays the foundation for the parametric modeling design of bridge shaped components.(2)In view of the difficult problem of special-shaped component modeling in the main bridge engineering,this paper puts forward the dynamo based parametric modeling method,which improves the design efficiency,reduces the repeated operation and lays the foundation for BIM model transfer to the construction design stage.(3)Combined with the characteristics of bridge engineering in local municipal engineering,taking into account the national and industrial classification standards,the parameterized components are classified according to the smallest functional unit,and the necessary parameters of the design stage and the expansion parameters required for the later stage of construction and operation management are customized for various components,according to industry specifications,enterprise standards and later management information requirements,the delivery content and process standards of the bridge BIM model are specified,and the project-level delivery standards based on the steel truss bridge are initially prepared.(4)Through the application research of the information model in each stage of the bridge project,it is confirmed that the application of the bridge information model in the project can meet the conventional expectations of the domestic construction industry for BIM.