Strain Monitoring of Widening Cement Concrete Pavement Subjected to Differential Settlement of Foundation
Strain Monitoring of Widening Cement Concrete Pavement Subjected to Differential Settlement of Foundation
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DOI：
10.1155/2015/679549
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发表时间：
2015-10
期刊：
影响因子：
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通讯作者：
X. Weng;Yongtao Nie;Junyuan Lu
中科院分区：
文献类型：
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作者：
X. Weng;Yongtao Nie;Junyuan Lu
本文介绍了使用基于光纤布拉格光栅（FBG），这是能够减少应变传递误差的传感器，测量的应变特性的水泥混凝土路面的顶部和底部层受到不同程度的基础沉降。根据实测数据，详细分析了结构应变的分布特征和变化规律。通过将实测结果与有限元分析结果进行比较，发现基于光纤光栅的传感器组件能够有效地监测水泥混凝土路面的应变分布，从而证明改进的光纤光栅应变传感器是一种非常有前途的道路路面结构健康监测解决方案。
This paper describes the use of a sensor based on a fiber Bragg grating (FBG), which is capable of reducing strain transfer errors, to measure the strain features within the top and bottom layers of a cement concrete pavement subject to different degrees of foundation settlement. Based on measured data, the characteristics of the distribution and the variation in the structure strain were analyzed in detail. By comparing the measured results with those obtained by means of finite element analysis, the proposed FBG-based sensor assembly was found to be capable of effectively monitoring the strain distribution in a cement concrete pavement, thus proving that the improved optical fiber grating strain sensor is a very promising solution for road pavement structural health monitoring.