基于DEA的沥青路面使用性能综合排序方法研究

Comprehensive Sort Method of Asphalt Pavement Performance Based on DEA

沥青路面使用性能排序方法的科学性直接影响养护决策的合理性.运用基于虚拟决策单元的数据包络分析法(DEA)建立了沥青路面综合排序模型,确定了模型的输入、输出指标.对某高速公路路面性能排序进行了案例分析,并与华盛顿州和犹他州的典型排序方法进行比较.结果表明,基于虚拟决策单元的DEA排序方法与典型排序方法的结论基本一致,且具有评价指标较全面与权重不需人为事先确定等优点,避免了典型排序方法中权重确定的主观性缺陷.

Whether the sort methodology for asphalt pavement performance is scientific directly affects the rationality of pavement maintenance decision-making.By introducing a method of Data Envelopment Analysis（DEA） based on a Virtual Decision-Making Units,a comprehensive sort model for asphalt pavement performance is put forward in this paper.Then the indexes of input and output for sort model are determined according to the demands of road users.Finally,an evaluation case is illustrated its feasibility combining with the pavement condition data of different sections in an expressway.By comparison with other typical sort methods（eg.Washington Method,Utah method）,the sort results indicate that the conclusion of the DEA sort model is basically consistent with those typical methods.And the new method has the advantage of overall evaluation indexes and the objective weights of the indexes.It overcomes the weakness of strong subjectivity which the general sort methods owned at present.So its sort conclusions should be more overall,more scence and more objective.