Abstract: he evaluation of grade separation discussed in this paper refers to a comparison and selection out of those plans after the evaluation of their feasibility. The evaluation takes into consideration not only the compromise and balance between the technical goal and the economic one, but also the restrictions and effects from social and enviromental factors. The evaluation maker thus can find the fittest evaluation pattern according to the information and materials at his disposal.

Key words: interchange, project, eyaluation

摘要： 本文以整体效益为基本价值判断,探讨在立交规划过程中,经初步可行性评价后的多方案比选择优的关键因素评价及综合评价问题。

关键词: 立交, 方案, 评价