为了确定机坪U型区空间效率评估指标体系及其指标的重要程度，分别从机坪设计和机坪运行两个维度建立机坪U型区空间效率评估指标体系。基于此提出了基于范数灰关联-动态功效系数法的机坪U型区空间效率评估方法。并以10个国内大型运输机场航站楼对应的U型区机坪为例进行计算，得到了影响机坪U型区空间效率各指标的权重及各机场航站楼对应的U型区机坪的空间效率评分。提出在U型区设计时应着重考虑指廊边机位个数、U型区指廊纵深和U型区底边长度3个指标。结果表明，该方法能够较为科学地对机坪U型区空间效率影响因素进行综合分析，有效评判不同构型机坪U型区空间效率。

In order to determine the apron U-zone spatial efficiency assessment index system and the importance of its indexes, the evaluation index system of apron U-zone spatial efficiency was established from two dimensions of apron design and apron operation. Based on this, a spatial efficiency assessment method based on the paradigm gray correlation-dynamic efficacy coefficient method for apron U-zones was proposed. And the U-zone apron corresponding to the terminal buildings of 10 domestic large-scale transportation airports was calculated as an example, and the weights of each index affecting the spatial efficiency of the apron's U-zone were obtained as well as the spatial efficiency scores of the U-zone apron corresponding to the terminal buildings of each airport. It is proposed that three indexes should be emphasized in the design of U-zone, including the number of gates at the edge of the finger corridor, the depth of the finger corridor and the length of the bottom edge of the U-zone. The results show that this method can scientifically analyze the factors affecting the spatial efficiency of the apron U-zone, effectively judge the spatial efficiency of the U-zone in different configurations.