中文摘要：

针对立交方案的综合评价问题，利用物元分析理论进行研究，提出基于物元分析的立交方案综合评价方法．选取占地面积、通行能力、工程造价、施工难易程度等4大类13个指标作为评价因子，将方案分为优、良、中、一般4个等级，通过确定待评物元、建立节域物元矩阵、经典域物元矩阵，计算各评价因子权重和综合关联隶属度，得到不同方案及各评价因子对4个级别的隶属程度，通过比较选出了整体最优方案．结果表明，将物元分析理论用于立交方案的比选是可行的，不但能够比选出整体最优方案，而且能够分析出各评价因子之间的细微差别，具有较高的精确度．

英文摘要：

According to the interchange synthesis evaluation problem, the paper proposed an interchange project synthesis evaluation method based on the matter-element analysis method. The paper chooses the index of area, capacity, project cost, and construction difficulty as the evaluation gene, divides the project into the four class including excellent, good,fit and commonly. The matter-element matrix,traditional matter-element matrix using the expected evaluation matter-element is constructed,and the evaluation gene weight is computed. Form the conclusion, applying the matter-element analysis to in- terchange project synthesis evaluation is feasible, it can gain the optimal project and assess the difference of the evaluation gene and be provided with higher precision.