冰雪天气沥青路面抗滑性能的衰变及预测
作者:
作者单位:

1.同济大学 道路与交通工程教育部重点实验室,上海 201804;2.中国铁路设计集团有限公司公路事业部,天津 300308;3.上海师范大学 建筑工程学院,上海 201418

作者简介:

李浩嘉(1993—),男,甘肃庆阳人,同济大学博士生. E-mail: haojia_li@tongji.edu.cn

通讯作者:

宋灿灿(1988—),女,山东济南人,上海师范大学讲师,硕士生导师,博士. E-mail: songcancan@shnu.edu.cn

中图分类号:

U414

基金项目:

上海市科委项目(21DZ1201200)


Attenuation and Prediction of Skid Resistance Performance of Asphalt Pavement in Ice and Snow Weather
Author:
Affiliation:

1.The Key Laboratory of Road and Traffic Engineering, Ministry of Education, Tongji University, Shanghai 201804, China;2.Department of Highway Business, China Railway Design Co., Ltd.Tianjin300308, China;3.School of Civil Engineering, Shanghai Normal University, Shanghai 201418, China

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    摘要:

    为了定量表征冰雪天气沥青路面的抗滑性能,在气候实验室内模拟了结冰路面、积雪路面和积雪消融路面的状态,用摆式仪和T2GO摩擦系数测试仪分别测试了摆值(BPN)和摩擦系数,用维萨拉移动检测器检测了冰层、雪层和水膜的厚度;对于不同的冬季路面状态,基于引起抗滑性能衰变的主要因素提出了摩擦系数预测方法.结果表明:结冰路面的抗滑性能主要受冰层厚度的影响;积雪路面的抗滑性能受雪层内部层间滑动的影响;积雪消融过程中,雪层表面形成的薄冰层会使路面抗滑性能显著降低;结冰路面的摆值与摩擦系数存在较好的线性关系.

    Abstract:

    In order to quantitatively characterize the skid resistance performance of asphalt pavement in ice and snow weather, icy pavement, snow-covered pavement and snow-melting pavement were simulated in the climate laboratory. Pendulum friction tester and T2GO friction tester were used to obtain British pendulum number(BPN) and friction coefficient separately, and the Vaisala mobile detector was applied to detect the thickness of ice layer, snow layer and water film. For various pavement surface condition, the prediction methods of friction coefficient were proposed based on the main factors which causing the attenuation of skid resistance. The results show that the skid resistance performance of icy pavement is mainly affected by the ice layer thickness. The skid resistance performance of snow-covered pavement is affected by the interlayer sliding within the snow layer. During the snow-melting process, a thin ice layer, formed on the snow layer surface, causes a significant decrease in the skid resistance performance of the road surface. The BPN of icy pavement has a good linear relationship with friction coefficient.

    表 1 沥青混合料的级配Table 1 Aggregate gradation of asphalt mixture
    图1 结冰路面的表面形态Fig.1 Surface morphology of icy pavement
    图2 喷洒水雾过程中路面覆盖物的厚度Fig.2 Thickness of road surface contamination during water mist spraying
    图3 结冰路面抗滑性能测试结果Fig.3 Test results of skid resistance performance of icy pavement
    图4 压实雪路面的表面特征Fig.4 Surface feature of compacted snow pavement
    图5 积雪路面摩擦系数测试结果Fig.5 Test results of the friction coefficient for snow-covered pavement
    图6 积雪消融路面的局部特征Fig.6 Local features of the snow-melting pavement
    图7 积雪消融过程中路表覆盖物厚度的变化Fig.7 Thickness variation of road surface contamination in snow-melting process
    图8 积雪消融路面的抗滑性能Fig.8 Skid resistance performance for snow-melting pavement
    图9 结冰路面及积雪消融路面BPN与摩擦系数的关系Fig.9 Relationship between BPN and friction coefficient for icy pavement and snow-melting pavement
    图10 结冰路面和积雪消融路面摩擦系数的拟合曲线Fig.10 Fitting curves of friction coefficient for icy and snow-melting pavement
    图11 压实状态积雪路面摩擦系数拟合曲线Fig.11 Fitting curves of friction coefficient for the compacted snow pavement
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引用本文

李浩嘉,左伟平,郭忠印,宋灿灿.冰雪天气沥青路面抗滑性能的衰变及预测[J].建筑材料学报,2024,27(11):1004-1010

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  • 收稿日期:2023-10-17
  • 最后修改日期:2024-03-19
  • 在线发布日期: 2024-12-10
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