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。
In order to effectively monitoring method was studied. S control the quality of asphalt pavement compaction, its train responses in molding process were monitored by fiber Bragg grating （FBG） sensor installed in the composite rutting plates. Through analyzing the relationship between strain responses and rolling times, the compaction process was analyzed. Through loading on rutting plates molded with different rolling times using rut meter, strain response law was analyzed to estimate the compaction degree of asphalt mixture. The results show that strain response variation measured by FBG sensor begins to he gentle after nineteenth compaction in the process of plate molding. At the same time, compaction degree of asphalt mixture approaches the specification requirement, which shows that using FBG sensor to monitor compaction process is feasible. Strain responses of rutting plates with different compaction degrees in loading test at the same temperature are decreased with the increasing of compaction degree, which has the same trend with the strain variation of corresponding compaction times in molding process.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2014年第5期112-117,共6页
China Journal of Highway and Transport
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)
关键词
道路工程
沥青路面
光纤光栅传感技术
压实监测
应变
road engineering
asphalt pavement
fiber grating sensing technology
compaction monitoring
strain
