The evaluation for damaged condition of asphalt pavement was the precondition to making pavement maintenance strategy and determining the optimal maintenance time.For the situation that evaluation indexes and evaluation methods of damaged condition of asphalt pavement need to be perfected and improved,in this paper,based on the asphalt pavement damaged status information uncertainty characteristic ,the unascertained measurement theory was applied to asphalt pavement evaluation.The rutting situation ,cracking situation,pit slot situation and repairing situation for expressway asphalt pavement were selected to establish evaluation index system.And based on the actual investigation dates,the single indicator unascertained measure function could be established.The index weight was determined by the entropy theory.At the same time,according to the size of unascertained measurement value and the criterion of credible identification,the rating and the sorting situation of damaged severity could be determined.Finally,an actual example is presented to prove the accuracy and validity of the given theory,This evaluation method was well worth spreading and implicating in asphalt pavement evaluation.%沥青路面损坏状况评价是制定路面养护策略和确定最佳养护时机的前提,针对当前国内对于沥青路面损坏状况评价少、评价指标与方法有待完善和改进的状况,基于沥青路面损坏状况信息不确定性特点,将未确知测度理论应用到沥青路面评价中.选取高速公路沥青路面的车辙状况、裂缝状况、坑槽状况和修补状况建立评价指标体系,并根据实际调查数据建立单指标未确知测度函数,通过熵权理论确定各指标权重,同时按未确知测度大小及置信度识别准则,确定出沥青路面损坏状况级别及损坏严重程度排序情况.最后,通过实例验证,该理论具有较高的可靠性和实用性,值得在沥青路面评价方面推广和应用.
展开▼
