摘要:三河口水利枢纽由大坝、泄洪消能、坝后供水系统、连接洞等工程组成，大坝为碾压混凝土双曲拱坝，是国内排名第二的高碾压混凝土拱坝。大坝建造难度大，枢纽工程地质、地形条件复杂，厂房电气设备众多，专业协同配合多，工程计算工作量大。本文利用建筑信息模型(Building Information Modeling，BIM)技术进行在线协同设计，通过地质模型、水工模型、水机模型、电气设备模型、建筑结构模型和金属结构模型实现了多专业同平台的设计。基于BIM技术的三河口水利枢纽应用，实现了与业主间的高效沟通，优化了设计方案。通过三维设计成果解决了现场问题，方便快速统计项目进行过程中的工程量，将计算机辅助设计(Computer Aided Design，CAD)技术与计算机辅助工程(Computer Aided Engineering，CAE)仿真相结合，实现了建模和计算的分离，提高了设计效率。

Abstract: The Sanhekou water control project is composed of dam, flood discharge and energy dissipation, water supply system behind dam, connecting tunnel and other projects. The dam is a RCC(Roller Compacted Concrete) double-curved arch dam, which is the second highest domestic RCC arch dam in China. The construction of the dam faces difficulties, including the complex geological and topographic conditions of the project, numerous electrical equipment in different plants, complicated professional cooperation, and large engineering calculation workload. This paper applies the BIM technology to carry out online collaborative design, achieving the design of multi-specialty in same platform through using the geological model, hydraulic model, hydraulic model, electrical equipment model, building structure model and metal structure model. The application of BIM-based technology in the Sanhekou water control project has realized the efficient communication with the owner, and optimized the design scheme. The 3D design results is able to solve the on-site problems, and to facilitate the rapid statistics of the project in the process of engineering. The combination of the CAD (Computer Aided Design) technology and CAE (Computer Aided Engineering) simulation has realized the separation of modeling and calculation, and improved the design efficiency.