以西藏那曲至嘉黎公路为例,分析高原地区涎流冰对公路建设和运营的危害,并根据高寒地区涎流冰的发育特点,有针对性地提出绕避、阻挡、排导、加高路堤等各种有效治理措施,为高原地区公路建设提供参考.%Creep performance is one of the important indices evaluating asphalt mixtures. This paper researches creep performance of asphalt mixtures by means of three-point trabecular bending test and discusses influences of loading level on creep curves. The paper acquires viscoelastic parameters of asphalt mixtures via fitting of the tested creep curves and conducts numerical simulation for trabecular bending creep test of asphalt mixtures by means of finite element method to obtain the law of trabecular creep of asphalt mixtures at different temperatures and different loads and compares them with test results. The research shows that permanent deformation will increase with stress level at the same temperature and strain development rate in stable period will also increase; numerical analysis results of viscoelasticity coincide with test results perfectly and can reflect deformation features at two stages before creep of asphalt mixtures.
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