中文摘要：

根据交通污染评价的需要,对道路立体交叉的分解方法进行了研究.选取典型的左出左入式、左出右入式、右出左入式、右出右入式、环圈式左转匝道和斜线式、单（复）曲线式、反向曲线式、平行线式右转匝道,对常见的三路立体交叉和四路立体交叉分解方法进行了研究.以黑龙江省鹤大立交为例进行了实际分析.结果表明,该方法能够将常见的立交形式分解成为一个个的组成单元,进行交通污染评价时,可以先研究这些组成单元的污染情况,再将多个单元进行组合研究道路立交整体的污染情况.

英文摘要：

The interchange decomposing method is studied according to the need of traffic polluting evaluation.The typical left-turn ramp of the left-exit-and-left-entrance type,the left-exit-and-right-entrance type,the right-exit-and-left-entrance type,the right-exit-and-right-entrance type,circle type and the right-turn ramp of oblique line type,single and compound curve type,reverse curve type,parallel type are chosen to study the decompose method of familiar three-leg and four-leg interchanges.Taking Heda interchange in Heilongjiang province for example,the result shows that the method can decompose the familiar interchange into some compositive units.When evaluating the traffic pollution,the pollution situation of the compositive units can be studied first and then put the units together to study the whole interchange pollute.