高等级公路沥青路面性能评价方法

Evaluation method for asphalt pavement performance of freeway

首先将路面的使用质量评价标准定为优、良、中、次、差5个等级;再确定评价指标及评价指标的权重,并将评价指标取值范围划分为5个灰数域,对应评价标准5 个等级,建立灰色评价的指标体系;然后利用三角白化权函数确定评价指标的隶属函数,利用灰聚类的方法评定该沥青路面使用质量的等级;最后制定公路养护计划和对策。工程实例表明,高等级公路沥青路面性能在使用过程中分指标的衰减是不均衡的,评价指标越不均衡,使用规范评价方法得出的结果越不可靠;该评价方法能够准确地反映现有路面的客观实际。

Firstly, classify the evaluation criteria of highway pavement into five classes; secondly, determine the valuation index and weight, and classify evaluation index and value range into five gray number regions corresponding to the above five classes; establish index system of gray evaluation; determine subordinate function of evaluation index by means of triangle whitenization weight function; evaluate the quality class of bituminous pavement through gray cluster; lastly, lay down the highway maintenance plans and solutions. Combined with practical engineerings, the feasibility of this method was studied. The result indicates the declining degree of the indices used in evaluation of high-class highway bituminous pavement is unbalanced. In the evaluation of the performance of high-class highway’s bituminous pavement, the more unbalanced the evaluation index is, the more unbelievable the result of the evaluation method will be. The evaluation method can show the performance of the high-class highway’s bituminous pavement in a more accurate way.