Rapid Modeling Technology for Cast-in-Place Bridges Based on Revit+Dynamo

In order to solve the problems such as low efficiency of bridge modeling in Revit software, and it is difficult to establish the spatial curve shape of cast-in-place bridge and accurately locate bridge components, the application research of Civil3 D, Dynamo and Revit software as so as the modeling practice of several cast-in-place bridge projects are carried out.By using Civil3 d, the centerline data can be quickly exported according to the design road route, and the Excel table is designed to classify and collect the centerline of the storage route, the parameters of the bridge component family and other relevant modeling information. After the Excel information data is imported and classified by Dynamo, the corresponding parameter family in the Revit project is assigned and placed in batches, and the spatial curve entity of the cast-in-place box girder can be quickly generated by the box girder section parameter family according to the design route, structure form and construction section, and the corresponding family can be directly imported into Revit to achieve the purpose of ‘one key' modeling.The research proves that based on Revit + Dynamo modeling, the modeling efficiency of cast-in-place bridge of engineering and technical personnel can be improved by 4 to 6 times compared with the conventional method. The bridge structure shape and positioning accuracy can be consistent with the design parameters, so as to solve the problem that Revit cannot complete the modeling of complex spatial curve cavity of box girder. At the same time, Dynamo visual programming software intuitive, easy to ordinary engineering and technical personnel to quickly grasp.