基于光纤光栅测试技术的沥青路面温度场实测

发布时间：2018-04-25 19:06

本文选题：沥青路面 + 温度场　；参考：《交通运输工程学报》2014年02期

【摘要】：基于光纤光栅智能测试技术,建立沥青路面温度信息长期实时监测系统,以实现沥青路面温度连续监测。采用高精度热电偶进行路面沥青层的温度测试,用以进行现场光纤光栅温度传感器的修正;采用光纤光栅温度传感器对沥青路面绝对温度进行实时监测。分析结果表明:路面内部温度在下午2:00~4:00达到最高值,凌晨4:00~6:00降至最低值,且上午9:00~12:00温度上升较快,下午4:00~6:00温度下降较快;随沥青路面深度的增加,沥青路面内部温度变化的幅度与速率均逐步减小,且达到峰值或谷值的时刻相对滞后;沥青路面内部温度随着气温的变化而变化,随季节气候变化而同趋势改变;全年气温最低值出现在1月初,之后温度开始逐渐升高。
[Abstract]:Based on the fiber Bragg grating (FBG) intelligent testing technology, a real-time monitoring system for asphalt pavement temperature information is established in order to realize the continuous monitoring of asphalt pavement temperature. The high precision thermocouple is used to test the temperature of asphalt layer in order to modify the field fiber grating temperature sensor and the fiber grating temperature sensor is used to monitor the absolute temperature of asphalt pavement in real time. The results show that the internal temperature of the pavement reached its highest value at 2: 00 in the afternoon, reached its highest value at 4: 00 in the morning, dropped to the lowest at 6: 00 in the morning, and the temperature rose faster at 9: 00 to 12: 00 in the morning, and dropped faster at 4: 00 at 6: 00 in the afternoon; with the increase of the depth of the asphalt pavement, The range and rate of temperature change in asphalt pavement gradually decrease, and the time of peak value or valley value is lagging behind, and the internal temperature of asphalt pavement changes with the change of temperature and the same trend with seasonal climate change. The lowest temperature for the year began in early January, after which the temperature began to rise.
【作者单位】：哈尔滨工业大学交通科学与工程学院;长安大学道路结构与材料交通行业重点实验室;香港理工大学建设及环境学院;
【基金】：国家自然科学基金项目(51278159) 中央高校基本科研业务费专项资金项目(CHD2011SY001)
【分类号】：U416.217

【参考文献】