摘要
为弥补断裂能在评价沥青混合料低温抗裂性能时的不足,总结目前基于DCT试验的沥青混合料抗裂性能指标,即断裂能、韧性指数、断裂强度指数、断裂应变容限值和柔性指数,应用层次分析法(AHP)对这5种评价指标进行综合分析,得出不同指标的权重,应用加权平均方法确定沥青混合料的抗裂性能。研究表明:分别赋予断裂能、韧性指数、断裂强度指数、断裂应变容限值和柔性指数0.232,0.040,0.145,0.491,0.092的权重系数,得到沥青混合料抗裂性能综合评价指标;综合评价指标越大,沥青混合料的抗裂性能越好;采用AHP计算的综合评价指标相对于单一指标方法更为合理,有更好的适用性和可靠度。
Due to the disadvantage of fracture energy in evaluating low temperature fracture test of asphalt mixture,some fracture indices were summarized for further evaluation.Analytic hierarchy process(AHP)method was applied to analyze five fracture indices,including fracture energy,toughness index,fracture strength,fracture strain tolerance and flexibility index.The comprehensive index for accessing the crack resistance of asphalt mixture was calculated by weighted average summation.The results showed that the weights of fracture energy,toughness index,fracture strength,fracture strain tolerance and flexibility index were 0.232,0.046,0.145,0.491,0.092 respectively.The comprehensive index of asphalt mixture anti-cracking performance was obtained.The larger the comprehensive index was,the better the anti-cracking performance of asphalt mixture was.The practical analysis showed that the comprehensive index calculated by analytic hierarchy process was more reasonable than the single index method,and had better applicability and reliability.
作者
闫科伟
史小特
朱月风
司春棣
YAN Kewei;SHI Xiaote;ZHU Yuefeng;SI Chundi(State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures,Shijiazhuang 050043,Hebei,China;Road and Bridge Engineering Department,Shanxi Conservancy Technical Institute,Yuncheng 044000,Shanxi,China;Department of Rail Transit,Shijiazhuang Institute of Railway Technology,Shijiazhuang 050043,Hebei,China;School of Traffic and Transportation,Shijiazhuang Tiedao University,Shijiazhuang 050043,Hebei,China)
出处
《河南理工大学学报（自然科学版）》
CAS
北大核心
2021年第1期169-176,共8页
Journal of Henan Polytechnic University（Natural Science）
基金
国家自然科学基金资助项目(11972237)
河北省高等学校科学技术研究项目(QN2019234)
河北省引进留学回国人员重点资助项目(C20190513)。
关键词
DCT试验
沥青混合料
层次分析法
抗裂性能
可靠度分析
DCT test
asphalt mixture
analytic hierarchy process
anti-cracking performance
reliability analysis
