关键词: 水电站建筑物;建筑信息模型;建筑设计;三维设计;多平台协同;K25溶洞;乌东德水电站;

Abstract: At present，the application of 3D design and BIM technology in hydraulic engineering has changed from single specialty and single stage to the whole process and multi-specialty cooperation.It is difficult for a single software platform to meet the needs of 3D design application in the whole process，so multi software collaborative design has become the main strategy at present.In the design of centralized control building of Wudongde Hydropower Station located in K25 karst cave，due to the difficulties such as complex terrain environment，building special-shaped surface and complex internal structure，multi software was used to complete the whole process of three-dimensional design from scheme to construction drawing.Through the cooperation of SketchUp，Rhino，Revit and other 3D design software，various specialties cooperated to complete the modeling of complex shapes such as cave wall，concrete backfill and special-shaped curtain wall and the integration of BIM model，and finally generated construction drawings through BIM model.As a multi software collaborative design technology practice，the design of centralized control building located in K25 karst cave not only provides a reference for the 3D design of similar hydraulic projects，but also lays a foundation for multi-platform data fusion in the later stage of the project.

Key words: hydropower buildings；BIM；architectural design；3D design；cooperate design of multi software platforms；K25 karst cave；Wudongde Hydropower Station