摘要
在绘制直线扭曲面钢筋图时常常需要将其展开为平面图形,以直观地显示钢筋的长度.为此提出一种屏幕展开方法,此方法的基本要点是,以扭曲面末端垂直线和底部起坡线所在的平面为基准面,将扭曲面各分块的控制点按几何尺寸不变的原则搬到基准面,即可形成展开图.通过工程设计实例证明,该方法是一种比较实用的方法.
The beeline distortion face often needs to be spread into an ichnography during drawing the reinforcement drawings for the inlet and outlet of the hydraulic structure, so as to show the length of the reinforcing steel bar directly. Therefore, the method of screen spreading is presented herein with the following basic feature: taking the surface of the perpendicular line at the end of the distortion and bottom as the datum plane, move the controlling point of every distortion part to the datum plane with the principle of changeless of geometry size, and then the spreading is formed. Through the actual project design, this method is proved to be useful.
出处
《水利水电技术》
CSCD
北大核心
2005年第4期46-47,共2页
Water Resources and Hydropower Engineering
关键词
渐变段
扭曲面
进口
出口
倒虹吸
唐河
南水北调工程
transition section
distortion
inlet
outlet
inverted siphon
Tanghe River
South-to-North Water Transfer Project
