铁道科学与工程学报2016，Vol.13Issue(4)：689-696,8.
不同工况下沥青混合料黏弹性参数研究
Research on asphalt mixture viscoelastic parameters under different conditions
摘要
Abstract
Through the rutting test under different conditions and constitutive model of asphalt mixture (AC -20C)with cyclic stress,the impact of temperature,stress and loading time on rutting deformation and viscoelas-tic parameters were researched,which can provide a reference for design of asphalt mixture.Through the orthog-onal analysis,the test results show that temperature has the most important impact on rutting,while loading time play a secondary role.The influence degree of temperature is 2 and 10 times of loading time and stress,respec-tively.Meanwhile,the impact of temperature,loading time and stress on viscoelastic parameters(E1 ,η2 ,E3 ,η3 ) of the constitutive model are different.The impact of loading time on the E1 is 1 .6 and 4 times than that of tem-perature and stress,respectively.Then the impact of temperature on η2 is found to be 1 .5 times than loading time and stress.As for the E3 ,the impact of temperature and stress are mostly similar which are 2.5 times than that of loading time.Finally,the impacts of stress and loading time are 1 .6 and 1 .4 times than that of tempera-ture,respectively.Through the analysis of combining impact of temperature and loading time,the main reason for the enormous increase of rutting deformation is the combined effect of higher temperature and longer loading time.关键词
沥青混合料/黏弹性/本构模型/正交分析/车辙Key words
asphalt mixture/viscoelasticity/constitutive model/orthogonal analysis/rutting分类
交通工程引用本文复制引用
彭东黎,张家生,龙尧..不同工况下沥青混合料黏弹性参数研究[J].铁道科学与工程学报,2016,13(4):689-696,8.基金项目
国家自然科学基金资助项目(51378514) （51378514）
