基于熵权的高速公路沥青路面预养护措施优选模型研究

预养护措施的选择是高速公路沥青路面预防性养护的关键技术之一.在全面分析经济、技术和环境等影响因素的基础上,建立了沥青路面预养护措施优选模型.该模型首先根据实际工程经验和专家打分法对各评价指标进行赋值,然后利用评分矩阵计算各评价指标的熵权,并将层次分析法确定的主观权重与之结合得到各评价指标的综合权重系数,最后将评价对象集映射到距离空间,距离最小者即为最优预养护措施.某高速公路沥青路面预养护工程的实例研究表明该模型是可行的,研究成果可以为沥青路面预养护措施的选择提供参考.

Model of Optimal Selection for Preventive Maintenance Measures of Expressway Asphalt Pavement Based on Entropy Weight

The selection of preventive maintenance measures is one of the key technologies for the preventive maintenance of expressway asphalt pavement. Based on the comprehensive analysis of influencing factors such as economy, technology and environment, the model of optimal selection for preventive maintenance measures of asphalt pavement is established. In this model, the value of every evaluation indicator is determined by the aid of the practical engineering experience and expert scoring method firstly, and then the entropy weight of every evaluation indicator is calculated in accordance with the score matrix. Combing with the subjective weight assigned by using the analytic hierarchy process, the synthetic weight coefficient can be worked out. Finally, the evaluation objects are mapped to the distance space and the least distance indicates the best preventive maintenance measure. Through the case study of the expressway asphalt pavement preventive maintenance engineering, it is proved that the model is feasible. The result offers certain reference to the selection of asphalt pavement preventive maintenance measures.