摘要:当前正处于实现“两个一百年”奋斗目标的历史交汇期间，作为现代交通运输基础设施之一的高速公路建设需求与日俱增。云南地区山川河流密布，隧道占比显著，传统的隧道设计方式已经无法满足当今发展的需要，引入BIM技术的隧道设计越来越成为主流设计方向。由于高速公路隧道几何上具有平面带状、空间起伏的特征，且隧道结构上具有同一断面层次分明、不同断面千差万别的特征，在隧道设计上直接引进房建BIM技术路线将造成水土不服、无法落地的问题。本文采用Revit+Dynamo的技术路线实现了长螺旋隧道真三维模型创建，为高速公路隧道BIM建模积累了宝贵的经验。

Abstract: As one of the modern transportation infrastructures, the demand of expressway construction keeps growing since China is now standing at a historical juncture of achieving the two centenaries′ goals. The ratio of tunnel in expressway construction is much higher in Yunnan province due to mountainous topography; traditional design method cannot satisfy the demands nowadays, therefore, BIM technology is introduced since it becomes a main direction in project design. Since tunnel in expressway looks like a flat ribbon geometrically, goes up and down spatially, presents cross-section differently, if architectural BIM method is directly applied, it actually doesn't work and doesn't acclimatize. "Revit+Dynamo" method is used in this article to solve the real 3D modeling of long spiral tunnel, which accumulates experience for future tunnel BIM modeling practice.