摘要
多年冻土区的沥青公路病害类型与沥青面层温度场密切相关。为探究路面温度场的分布规律,在国道G109安多-唐古拉山段K3357处(海拔5 231 m)建立观测点,包括在沥青路面面层不同深度埋设ZDR系列温度记录仪,在路旁架设TRM-ZS2气象站,对路面不同深度的温度、环境温度、太阳辐射、相对湿度、风速等进行连续跟踪,采用多元回归法分析路面温度场与气象因素之间的关系。结果表明:随着路面深度的增加,温度波动范围逐渐变小;温度场与气温和太阳辐射皆呈正相关、与相对湿度和风速相关性较低;气温是影响温度场的最主要因素,太阳辐射仅在9~21时对温度场具有影响作用;气温与太阳辐射对温度场的影响分别具有1.5小时和2.5小时的滞后性。
Diseases of the asphalt highway in permafrost area are complex and closely related to the temperature field of the surface layer of asphalt pavement. To explore the distribution pattern of the asphalt pavement temperature, an observation station was set up at k3 357(5 231 m asl.) in the Amdo-Tanggula Mountains of G109, and ZDR thermometer was applied to continuously record the temperature of different depth of surface layer of asphalt pavement, and TRM-ZS2 weather station was set up beside the road to continuously measure ambient temperature, solar radiation, relative humidity and wind speed. The relationship between pavement temperature field and meteorological factors was analyzed with multiple regressive analysis. Our results show that temperature fluctuation range decreases gradually as the increasing of depth and the temperature field is positively correlated with temperature and solar radiation. Moreover, the temperature field shows a low correlation with relative humidity and wind speed. According to our results, it is found that temperature is the most important factor affecting the temperature field, and solar radiation only affects the temperature field during day time. The effect of temperature and solar radiation on the temperature field shows a lag of 1.5 hours and 2.5 hours respectively.
作者
田荣燕
魏新晨
TIAN Rongyan;WEI Xinchen(School of Engineering,Tibet University,Lhasa 850000,China;School of Transportation,Southeast University,Nanjing 211189,China)
出处
《高原科学研究》
CSCD
2021年第1期88-96,共9页
Plateau Science Research
基金
西藏自治区科技厅重点研发及转化计划项目(XZ201901-GB-14)
西藏大学研究生高水平人才培养计划项目(2018-GSP-153)。
关键词
多年冻土区
沥青路面
温度场
气象因素
多元回归
permafrost region
asphalt pavement
temperature field
meteorological factors
multiple regression
