Strain Sharing Assessment in Woven Fiber Reinforced Concrete Beams Using Fiber Bragg Grating Sensors

被引：14
|
作者：
Montanini, Roberto [1 ]
Recupero, Antonino [1 ]
De Domenico, Fabrizio [1 ]
Freni, Fabrizio [1 ]
机构：
[1] Univ Messina, Dept Engn, I-98166 Messina, Italy
来源：
SENSORS | 2016年 / 16卷 / 10期
关键词：
Fiber Bragg grating sensor; embedded optical fiber sensor; strengthened concrete structures; rehabilitation and retrofitting; strain measurements; fiber reinforced cementitious matrix (FRCM); strain transfer mechanism; GLASS FIBER/EPOXY COMPOSITES; OPTIC SENSORS; TEMPERATURE;
D O I：
10.3390/s16101564
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Embedded fiber Bragg grating sensors have been extensively used worldwide for health monitoring of smart structures. In civil engineering, they provide a powerful method for monitoring the performance of composite reinforcements used for concrete structure rehabilitation and retrofitting. This paper discusses the problem of investigating the strain transfer mechanism in composite strengthened concrete beams subjected to three-point bending tests. Fiber Bragg grating sensors were embedded both in the concrete tensioned surface and in the woven fiber reinforcement. It has been shown that, if interface decoupling occurs, strain in the concrete can be up to 3.8 times higher than that developed in the reinforcement. A zero friction slipping model was developed which fitted very well the experimental data.
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收藏
页数：12
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