The present study involves the smart precast box culvert, which can sense the strain and stress achieved based on the fiber optic sensor embedded into the fiber-reinforced polymer. These culverts (2.00 × 2.00 × 2.00 m) was investigated experimentally with different seven trial load tests subject to join the dual box culvert using two steel strand and two smart steel strand (CH2&CH3) which is connected to fiber-reinforced polymer strain sensor for analyzing deformation sensor, line load strain, stress region, and stress–strain self-sensing of the culverts. From the monitored results in this self-sensing static load test, the maximum deformation sensor was 131.75 µɛ at the lower smart steel strand (CH3) and the cracks (0.10 mm) initiated on the roof slab of the culverts for a specimen due to bending moment in the culvert not exceeded its moment capacity because the applied load was smaller than the ultimate load. This paper proposes a series of fiber-reinforced polymer strain sensors to connect to the smart strand to completely meet the culvert’s requirements, and their sensing performance is come out. This study, therefore, implied that the experimental finding of the fiber-reinforced polymer strain sensors has the potential to monitor the structural health over time.

本研究涉及智能预制箱涵，该涵洞可感测嵌入到纤维增强聚合物中的基于光纤传感器的应变和应力。对这些涵洞（2.00×2.00×2.00 m）进行了不同的七个试验负载试验，研究了使用两个钢绞线和两个智能钢绞线（CH2＆CH3）连接到纤维增强聚合物应变传感器进行分析的双箱涵变形传感器，线荷载应变，应力区域以及涵洞的应力应变自感应。从此自感应静载荷测试的监测结果来看，下部智能钢绞线（CH3）和裂纹（0.英寸）处的最大变形传感器为131.75 µl。由于涵洞中的弯矩不超过其矩承载力，因此在涵洞的屋顶平板上起始10 mm）不超过其矩承载力，因为所施加的载荷小于极限载荷。本文提出了一系列的纤维增强聚合物应变传感器连接到智能绞线，以完全满足涵洞的要求，并提出了它们的传感性能。因此，这项研究表明，纤维增强聚合物应变传感器的实验发现具有随时间监测结构健康的潜力。