| In order to make full use of the advantages of Revit's efficient parametric modeling and ABAQUS's powerful structural finite element analysis capabilities,this paper developed the Revit-ABAQUS structural model exchange interface.The exchange interface is able to eliminate barriers between Revit and ABAQUS,which greatly saves the time of building complex 3D models and improves the efficiency of structural analysis in ABAQUS,and also covers the shortage of structural analysis of Revit.On this basis,this exchange interface was applied to the study of the unsynchronization of the oil cylinders' lifting displacement of the integral steel platform.By comparing with the analysis results of the same model structure established in SAP2000,the applicability of Revit-ABAQUS model exchange interface was proved.Firstly,three-dimensional structural model of the cartridge holder support integral steel platform was built in Revit,and then inputted into Navisworks to simulate the construction dynamic.In this process,the details of the actual installation process of the integral steel platform equipment system and the force conversion during the climb process can be clearly observed,the potential problems can be identified and solved in advance.It is significant to optimize the performance of the whole steel platform.Secondly,the exchange interface was developed based on Microsoft.NET platform,Microsoft Visual Studio 2015 development environment and Revit API by using C# programming language,which was to realize the seamless import of the structural 3D model from Revit to ABAQUS.At the same time,the “Revit-ABAQUS Model Exchange” tab and the “Exporting INP File” function panel were added to the initial menu of Revit 2015 by using external application development mode.The basic algorithm is as follows: obtaining the data of the component number,space position information,material physical property,section type and detailed geometric size,load type and location distribution,boundary condition and so on of ABAQUS structural modeling by using Revit API;writing a canonical INP file on the basis of the writing rules of INP file in ABAQUS;setting up the analysis step according to the actual needs and submitting to ABAQUS for structural analysis.Then,steel frame structures with different degrees of complexity were modeled in turn.The correctness of the exchange interface was verified by comparing the nodes,number of the beam and shell elements,materials,loads,and boundary conditions of Revit and ABAQUS model.Two typical steel frame examples were selected to model in SAP2000.The comparison of calculation results between SAP2000 and ABAQUS confirmed that the exchange interface not only can achieve complete transformation of the model,but also fully meet the requirements of ABAQUS structural analysis.Finally,the simplified model of the integral steel platform under climbing working state was quickly modeled in ABAQUS by using the model exchange interface.The validity of the exchange interface in the analysis of complex structural system was verified by comparing the analysis results of the same integral steel platform model in the SAP2000 and ABAQUS under the self-heavy load.After that,the exchanged model was applied to study the problem of the unsynchronized lifting displacement of the cylinder.By calculating the different examples on cylinders' unsynchronized lifting displacements of the single tube 1 and 2 under two load conditions,the threshold value of the unsynchronized difference between the jacking displacements of any two cylinders of the integral steel platform under climbing condition was obtained. |
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