沥青路面表面裂缝处夏季温度场分布规律研究
Study on the Distribution Law of Temperature Field at the Top-down Crack of Asphalt Pavement in Summer
于晓贺 1杜华林 2陈俊琪 2韩雪 2徐瀚恺2
作者信息
- 1. 湖北交通投资集团有限公司 武汉 430063;武汉理工大学交通与物流工程学院 武汉 430000
- 2. 湖北交通投资集团有限公司 武汉 430063
- 折叠
摘要
以我国中部地区典型城市武汉市的夏季极端月份温度场实测数据为基础,建立沥青路面夏季温度场变化规律模型.采用COMSOL建立了沥青路面表面裂缝的有限元模型,基于实测数据验证了数值模拟的精度,说明了沥青路面表面裂缝与正常沥青路温度场分布规律的差异性.结果表明:①表面裂缝的存在会导致该病害位置处温度场的分布规律与正常沥青路面出现显著差异;②沥青路面温度沿深度方向变化趋势比较明显,差异程度与裂缝的深度成正比,夏季的最高地表温度可以达到54.089 ℃.
Abstract
Based on the measured data of temperature field in extreme months in summer in Wuhan,a typical city in central China,a model of temperature field change in asphalt pavement in summer was established.The finite element model of asphalt pavement surface cracks was established by using COMSOL.Based on the measured data,the accuracy of numerical simulation was verified,and the difference of temperature distribution between asphalt pavement surface cracks and normal asphalt pavement was explained.The results show that:①the existence of surface cracks will lead to a signif-icant difference between the distribution law of temperature field at the disease location and normal as-phalt pavement.②The temperature of asphalt pavement changes obviously along the depth direction,and the degree of difference is directly proportional to the depth of cracks.The highest surface tem-perature in summer can reach 54.089℃.
关键词
沥青路面/表面裂缝/温度场/数值模拟/分布规律Key words
asphalt pavement/top-down cracks/temperature field/numerical simulation/distribution law引用本文复制引用
出版年
2024
NETL
NSTL
万方数据