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基于光纤光栅传感技术的沥青路面压实监测

, PP. 112-117

Keywords: 道路工程,沥青路面,光纤光栅传感技术,压实监测,应变

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Abstract:

?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。

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