Vertical design method of intersection based on bilinear Coons surface model
Article Text (Baidu Translation)
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摘要: 以线性Coons曲面模型为基础, 研究了平面交叉口立面设计在线性Coons曲面模型上定义的基本运算和Coons曲面片的划分方法。研究发现该模型可比较精确地描述平面交叉口的立面, 且适合计算机处理, 计算速度快, 精度高, 提高了平面交叉口CAD系统的适应性和设计效率。结果表明, 基于线性Coons曲面模型的平面交叉口立面是一种可行和实用的设计方法。Abstract: This paper studied fundamental operations and dividing method of surface slices on the basis of bilinear Coons surface model for the vertical design of intersection.It is pointed that this model can more accurately describe the vertical surface, and is suitable for computer process with higher speed and precision, so it improves the adaptability of intersection CAD system, and raises the design efficiency. The practical result indicates that tihs method is feasible.
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图 4 相同等级道路相交的X形交叉口Coons曲面片划分
Figure 4. Coons surface slices of X-intersection of same grade roads
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