探讨AutoCAD Civil 3D在管网设计中曼宁公式的应用研究

Study on Application of Manning Formula in Pipeline Network Design Using AutoCAD Civil 3D

摘要: 曼宁公式是渠道流量或速度经验的公式，Civil 3D软件利用自定义标签表达式的方式把曼宁公式与标签链接，让曼宁公式与管网零件基础数据一样所见即所得。本文结合AutoCAD Civil 3D软件，通过某项实际工程，在平面中对管网设置标签以显示其流量值，得出AutoCAD Civil 3D采用曼宁公式进行管网优化设计和管网零件查错方面具有很大的大优势。

Abstract: The Manning Formula is an empirical formula calculating the channel flow or speed.The Civil 3D software uses a custom tag expression to link the Manning Formula to a certain tag, so that the Manning Formula is able to be seen the gains, same as the the basic data of pipe network parts.Based on a practical project case study, this paper applies the software of AutoCAD Civil 3D to label the pipeline network in plane to show its flow value.Results shows that the AutoCAD Civil 3D possesses great advantages in applying the Manning Formula to optimize pipe network design and check parts in pipeline network parts.