Abstract: Due to the complex，fuzzy and unreasonable evaluation methods of synthetical performance evaluation of asphalt pavement，the Principal Component Analysis ( PCA) and Matlab Software were applied and several main evaluation indexes determined by current specifications were employed to evaluate the performance of asphalt pavement． Compared with the results based on gray-clustering decision method，it could be indicated that the PCA was feasible and effective，which could reflect the effect of indexes on synthetical evaluation objectively and show special advantages．

Key words: asphalt pavement, performance index, principal component analysis

摘要： 针对沥青路面使用性能综合评价复杂性、模糊性及缺乏合理评价方法等问题，采用主成分分析法，选取现行 规范确定的沥青路面使用性能评价指标，借助Matlab数学工具对沥青路面使用性能进行综合评价;并与已有文献 中利用灰色聚类决策评价方法所得结果进行比较。分析表明:主成分分析法用于评价沥青路面使用性能是可行 的，而且能客观地反映评价指标对综合评价值影响的强弱，具有特有的优越性。

关键词: 沥青路面, 使用性能指标, 主成分分析法