Abstract: The bulk of time and effort go to design high-lev el profile of intersection by using existing method.Regarding the design of inters ection as that of curved surface,the paper introduces a new method which can dra w out quickly contour line of intersection by using the COONS curved-surface fu nction,and gain the elevation of random station.The designer can adjust simultan eously the design process and reach an ideal result.This design method is very f ast,convenient and efficacious.

Key words: the COONS curved surface, intersection, high-level profile design

摘要： 现行交叉口立面设计大都采用手工计算的方法,不仅工作量大,而且很难判断立面设计的优劣.笔者将交叉口设计视为曲面的设计,利用双三次曲面函数,可在极短的时间内得到该交叉口的等高线图,并可通过插值求得任意坐标点的标高.设计者可适时进行调整,直到满意为止.这种方法快速、方便、设计效果较好

关键词: 双三次曲面, 平面交叉口, 立面设计