基于混凝土试件试验,对大坝裂缝光纤监测中采用的光纤传感技术的灵敏性进行了测试。得到了在大坝安全监控缝宽控制范围内光纤与裂缝夹角为30°、45°和60°的光纤灵敏性与裂缝宽度关系曲线。
Based on the experiments on concrete samples, the sensitivity of the fiber optical sensing techniques adopted in crack monitoring of large dams was tested. The relationships between the sensitivities of the optical fiber and crack widths at 30° ,45°,60° were obtained.