基于光纤光栅传感技术的沥青路面压实监测

发布时间：2018-05-17 12:24

本文选题：道路工程 + 沥青路面　；参考：《中国公路学报》2014年05期

【摘要】：为了有效控制沥青路面的压实质量,进行了沥青路面压实监测研究。将光纤光栅传感器植入复合式车辙板试件中,监测车辙试件成型过程中的应变响应,分析应变响应变化与压实次数的关系,实现沥青混合料压实过程分析;采用车辙仪对不同压实次数车辙试件进行加载,分析应变响应规律,以判断混合料的压实程度。结果表明:车辙板成型时,当碾压至第19次时,光纤光栅传感器应变变化开始趋于平缓,此时混合料的压实度基本达到了规范要求,采用光纤光栅应变传感器进行压实过程监测具有可行性;相同温度下,对不同压实度的车辙板试件进行荷载试验产生的应变响应随着压实度增加而减小,其变化趋势与成型过程中对应压实次数下的应变变化趋势一致。
[Abstract]:In order to effectively control the compaction quality of asphalt pavement, the compaction monitoring of asphalt pavement is carried out. The fiber Bragg grating sensor is implanted into the composite rut plate specimen to monitor the strain response of the rutting specimen during the forming process, and to analyze the relationship between the strain response change and the compaction times, so as to realize the compaction process analysis of asphalt mixture. In order to judge the compaction degree of the mixture, the rutting instrument was used to load the specimens with different compaction times, and the strain response law was analyzed. The results show that when the rutting plate is formed, the strain change of fiber Bragg grating sensor tends to be gentle when rolled to the 19th time, and the compaction degree of the mixture basically meets the requirements of the specification. It is feasible to use fiber Bragg grating strain sensor to monitor the compaction process, and at the same temperature, the strain response produced by the load test of rutted plate specimens with different compaction degree decreases with the increase of compaction degree. The variation trend is consistent with the strain variation trend corresponding to the compaction times in the molding process.
【作者单位】：哈尔滨工业大学交通科学与工程学院;中国人民解放军66157部队;中国民航机场建设集团公司;
【基金】：国家杰出青年科学基金项目(51225803) 国家自然科学基金项目(51208154)
【分类号】：U416.217

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