柔性封装光纤传感器监测沥青路面的应用

发布时间：2018-01-12 17:02

本文关键词：柔性封装光纤传感器监测沥青路面的应用　出处：《辽宁工程技术大学学报(自然科学版)》2014年06期 　论文类型：期刊论文

【摘要】：为考察依据经验规范理论设计的沥青路面在高频重载交通作用下易发生车辙、裂缝、坑槽等损伤从而引起结构大面积失效的损毁规律,需要通过实时和长期的健康监测方式获取其真实力学性能的演化及衰减历程.在众多智能感知元件中,考虑光纤所具备的成本低、几何形状多方适应性、分布式测试等优点,本文提出了一种柔性细集料封装光纤传感器,以素沥青为光纤外包层,以小粒径沥青混合料为封装层,通过有限元及基础试验确定封装尺寸,以分级加载试验校核其感知性能,并运用力学理论建立光纤感知应变和载荷之间的定量关系.研究结果表明:在改进压实工艺后,该种柔性封装光纤传感器可用于沥青路面结构的准确、有效监测.
[Abstract]:In order to investigate the damage law of asphalt pavement under the action of high frequency and heavy load traffic, such as rutting, cracks, potholes and so on, the asphalt pavement designed according to the empirical criterion theory can cause large area failure of the structure. It is necessary to obtain the evolution and attenuation process of its real mechanical properties through real-time and long-term health monitoring. Among the many intelligent sensing components, the low cost of optical fiber and the adaptability of geometric shape are considered. In this paper, a flexible fine aggregate encapsulation optical fiber sensor is proposed, which uses plain asphalt as the optical fiber outer layer and small particle size asphalt mixture as the encapsulation layer. The package size is determined by finite element and foundation test, and the perceptual performance is checked by the step loading test. The quantitative relationship between the sensing strain and the load of the fiber is established by using the mechanics theory. The results show that the flexible encapsulated fiber optic sensor can be applied to the asphalt pavement structure accurately after the compaction process is improved. Effective monitoring.
【作者单位】：大连民族学院土木建筑工程学院;河南省交通规划勘察设计院有限责任公司第五分院;中船重工第七一七研究所武汉光电国家实验室;
【基金】：中央高校基本科研业务费专项资金资助项目(DC12010110)
【分类号】：U416.217
【正文快照】： 0引言经济发展推动国内高级路面里程快速增长的同时,也使得道路结构的健康问题受到高度重视.当车辙、裂缝、坑槽发生,而未及时检测到,并在雨水作用下引发道路结构大规模破坏的现象越来越多[1],为此考虑通过监测方式获取实时的力学形态[2].光纤,有高灵敏度、几何形状多方适应性

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