| Space complex surface structure is widely used in large span public buildings such as gymnasium,railway station,airports and other projects.However,buildings with spatial complicated surface features are often irregular in shape.Accurate modeling of structure is very difficult.Pretreatment is quite complicated and workload is great.The current engineering practice can only be done manually by the experience of the designer.The modeling is inefficient,time-consuming and error-prone.At present,the professional software for complex surface modeling is temporarily lack of in the field of structure,greatly affected the promotion and application of the surface.With the rapid development of digital technology,digital production methods and tools upgrade continuously.BIM parametric technology is increasingly applied in the design of complex surface building.Surface digital construction has a significant relationship with the ultimate construction effect of the complex surface building and has become an important direction in the research of building structure design and architectural deepening.To solve this problem,this paper first summarizes and discusses the digital construction method of complex surface building,as the theoretical foundation of complex surface structure design.finally,through the actual project case,this paper propose the application strategies of parametric technology in the spatial complex surface structure desigh from aspects of the construction of the curtain wall and the design of Spatial structure.Using the Shandong University Stadium,Zhuhai Hengqin International Tennis Center,Hubei Province Xiangyang Civic Center and other engineering examples,this paper has explored the application of BIM philosohy and parametric design technique in complex curved surface architecture.The specific content is divided into six chapters.Brief introduction is as follows:(1)First of all,this paper introduces the concept of complex curved surface architecture,construction methods of the free-form surface,parametric shape finding and meshing.At the same time,this paper illustrates some problems in the design of complex curved curtain wall and grid structure.(2)Secondly,this paper states the definition of Bim and parametric technology.After that,The software system of BIM is analyzed and compared.Last,This article shows the development method and the selection reason of rhinoceros,plug-in grasshopper,software platform Microsoft C#.(3)Researches the parameterized construction of free-form surface of Zhuhai Hengqin International Tennis Centre and generation logic for the curved surface curtain wall.The reasonable realization method of the method is finally confirmed.(4)In Shandong University Stadium project,this paper looks for a set of parametric design method of complex curved space structure and has established the 3d model of steel structures of free-form surface awning.Then,the software analysis and the optimization of the structure scheme are carried out.(5)Though the application of parametric software Rhinoceros in the project of the International Exhibition Center of the Sea Flower Island,the theory and method of grid division of complex surface is studied.(6)Using the programming language C#,A space grid structure modeling plug-in program for the modeling of complex surface structure is developed,which is based on the Gen Midas file.At last,the program was verified by engineering examples.It can solve the frequently encountered problem how to quickly generate the spatial structure of cone or pyramid based on the established triangular or quadrilateral grid and the program was verified by engineering examples. |
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