宋丹



摘 要:双曲拱坝属于一种复杂结构的坝型,用传统的三维建模软件建立双曲拱坝模型耗时长,且需要大量的人力和物力;而Dynamo参数化建模板块通过一系列预定义节点,按照一定的逻辑串联起来,并将大批量与机械化工作交付给软件自动计算,能快速准确地建立双曲拱坝模型,提高设计质量和效率,实现了从手工绘图向程序自动设计的重大飞跃,对水利工程施工有着极大现实意义。Civil 3D是一款专门用于创建三维数字地形模型的软件,可以利用数字化的地形模型,计算土石方开挖、多级边坡放坡、断面设计等。本文对Civil 3D地形处理和用Dynamo参数化编程建立双曲拱坝模型展开研究。
关键词:双曲拱坝;Dynamo;Civil 3D;BIM技术
Abstract: The double-curved arch dam belongs to a dam type with a complex structure. It takes a long time to build a hyperbolic arch dam model with traditional three-dimensional modeling software, and it needs a lot of manpower and material resources. Dynamo parametric modeling plate, through a series of predefined nodes, is connected in series according to certain logic, and delivers large quantities and mechanization work to the software for automatic calculation, which can quickly and accurately build a hyperbolic arch dam The model can improve the quality and efficiency of design and realize the great leap from manual drawing to automatic program design, which is of great practical significance to the construction of water conservancy projects. Civil 3D is a software specially used to create 3D digital terrain model, which can be used to calculate earthwork excavation, multi-level slope grading, section design, etc. In this paper, the civil 3D terrain processing and the establishment of double-curved arch dam model by dynamo parametric programming are studied.
Keywords: double-curved arch dam;Dynamo;Civil 3D;BIM technology
双曲拱坝是一种在水平断面上和竖直断面上同时向上游弯曲的连续光滑的三维空间曲面壳体[1]。由于这种特殊坝体结构的力学性能,使大部分水平荷载传给了两岸的边坡,利用两岸坚固的边坡反作用支撑整个大坝的安全稳定。因此,在我国西南地区的高山峡谷中修建了大量的拱坝。比如,四川省坝高240 m的二滩抛物线双曲拱壩、坝高285.5 m的溪洛渡拱坝;云南省坝高292 m的小湾抛物线双曲拱坝;世界上最大的在建水电站坝高289 m的白鹤滩双曲拱坝。据相关资料统计,建国之后,我国共修建了拱坝800余座,在设计和施工技术方面积累了较多经验,在全球处于世界领先水平。
但是,一个拱坝工程的完成往往需要在设计阶段花费大量的人工、时间进行坝体的绘制、调整,以及施工阶段进行工程放样和工程量计算。……