Parametric Design And Application Of Prestressed Variable Section Continuous Beam Bridge Based On BIM

In the last ten years,the Building Information Model(BIM)has entered the field of civil engineering in China.As a new technology,BIM has been applied more and more widely in the field of building engineering,but in the field of municipal bridge engineering,BIM technology has just started,based on The parametric design of BIM is less applied in practical municipal bridge engineering.Therefore,this paper takes the prestressed variable-section continuous beam bridge as an example to study the parametric design and application of bridge engineering based on BIM.The main contents include:(1)Through research on the application and parametric design of BIM in the field of bridge engineering at home and abroad,the four parametric design platforms that are currently the most widely used in the field of municipal bridges are summarized,and their advantages and disadvantages are compared.Parametric design platform.In order to standardize the application of parametric design,a complete process of bridge parametric design is proposed.(2)The application of parametric design in the preliminary design stage of the bridge is studied.According to the characteristics of the prestressed variable section continuous beam bridge and the advantages of parametric design,the application process of the complete parametric design in the preliminary design stage is proposed,and the Civil3 D is applied to the application.+Revit+Dynamo's parametric approach to building bridge models.(3)The application of parametric design in the design stage of bridge construction drawings is mainly the development of parametric model construction procedures for the main components of prestressed bridges,the parametric design of prestressed steel bundles and the program development of modeling,and the general reinforcement o f superstructures.The parametric design and modeling program development,the parametric design and modeling program development of the special-shaped pier and the lower structure steel bar and the use of the bridge parametric model for forward mapp ing.(4)In the bridge design process,it is necessary to test the force characteristics and safety of the bridge to meet the requirements of the specification,so it is necessary to build a structural analysis model.In order to avoid the huge workload of repeated modeling,a fast conversion method of BIM model and structural model was developed.(5)The parametric design is applied to the actual project to verify its engineering applicability,and a BIM-based bridge information management method is proposed.Based on the actual project,six construction applications of the bridge BIM model a re proposed,which proves that the bridge model obtained by parametric design has practical engineering value.