Research On Fine Modeling And Application Of Cable-stayed Bridge Based On BIM Technology

Bridges are one of the most important structures in traffic engineering.Traditional design tasks mainly focus on the plan,elevation,section and reinforcement drawing and structural analysis and calculation of bridge and tunnel structures.From the perspective of expressions,designers usually use two-dimensional drawings to express three-dimensional structural forms.However,three-dimensional models lacking structures are not only prone to unclear structural expressions,but also a large number of drawing errors and engineering statistics.These errors lead to more construction errors and more design changes.At the same time,structural calculations are also mainly performed from a two-dimensional perspective,or a simplified analysis model is established,which makes it difficult to achieve more accurate analysis and calculation.Therefore,with the development of more and more high-speed transportation projects,the requirements for engineering quality are getting higher and higher.The establishment of 3D models of bridges and tunnels in traffic design and the calculation of structures based on 3D models are very important in the 3D traffic design system.In order to promote the application of the three-dimensional design mode of bridge engineering,this paper focuses on the three-dimensional modeling of cable-stayed bridges using BIM technology and various BIM application points in the structural calculation based on the three-dimensional model.The main research contents include the following:1.By comparing the traditional design mode with the three-dimensional design mode,the existing problems of traditional bridge design and the defects in linear design work mode are summarized.Combined with the advantages of BIM technology,the three-dimensional design process of each component of the cable-stayed bridge is studied,and the diagonal Threedimensional display of the drawbridge.2.Research on the refined modeling method for the cable members of the cable-stayed bridge with non-linear members,developed the automatic generation program of the ideal linear cable type and the automatic generation program of the refined cable type under the condition of constant cable force.The stay cables were compared.3.Use C # language,based on Visual Studio 2010 development platform,use Revit API toolkit to carry out secondary development of Revit,develop the finite element interface program of bridge components in Revit environment,the interface program has the conversion function of Revit model to ANSYS model And post-processing debugging functions.4.Research the method of using Revit model to quickly create Midas structural model and the method of applying BIM technology to quickly complete the overall structural analysis and local structural analysis in cable-stayed bridge engineering.