激光与光电子学进展, 2019, 56 (24): 241201, 网络出版: 2019-11-26
基于光频域反射计技术的混凝土裂缝识别与监测 下载: 901次
Identification and Monitoring of Concrete Cracks Based on Optical Frequency Domain Reflectometry Technique
测量 光频域反射计 分布式监测 混凝土 裂缝监测 模型试验 measurement optical frequency domain reflectometer distributed monitoring concrete crack monitoring model experiment
摘要
混凝土结构裂缝难以从理论上准确预测。借助混凝土梁模型试验,研究了光频域反射计(OFDR)技术在混凝土结构开裂辨识和发展状况监测上的应用。试验结果表明,OFDR技术可以实现对混凝土结构0.002 mm级别微裂纹的预警,可以定位裂缝位置,空间分辨率达到1 cm,并可监测裂缝发展过程。相比其他分布式监测技术,采用OFDR技术得到的裂缝定位结果和对裂缝发展的监测结果更加准确,具有广阔的应用前景。
Abstract
The theoretically accurate prediction for cracks in concrete structures is difficult to realize. Applications of the optical frequency domain reflectometry (OFDR) technique in the identification and monitoring of cracks of concrete structures are studied by using the model test of concrete beams. Test results show that the OFDR technique can realize the warning of 0.002 mm micro-crack in concrete structures. The crack position can be located with a spatial resolution of 1 cm. The development process of cracks can also be monitored. Compared with other distributed monitoring techniques, the OFDR technique is more accurate in crack location and development monitoring and has a broad application prospect.
吴静红, 刘浩, 杨鹏, 蒋娜. 基于光频域反射计技术的混凝土裂缝识别与监测[J]. 激光与光电子学进展, 2019, 56(24): 241201. Jinghong Wu, Hao Liu, Peng Yang, Na Jiang. Identification and Monitoring of Concrete Cracks Based on Optical Frequency Domain Reflectometry Technique[J]. Laser & Optoelectronics Progress, 2019, 56(24): 241201.