为了验证基于布里渊光时域反射计(简称BOTDR)的光纤传感技术应用于桥梁健康监测的可行性,文章在钢筋混凝土简支梁的钢筋和混凝土表面布置了分布式光纤传感系统,对各级荷载作用下构件混凝土和钢筋的应变分布进行了在线监测。试验结果表明,BOTDR光纤传感技术能够准确监测试验梁的应变,并可识别梁的结构性破坏,可以应用于桥梁的健康监测。 In order to verify the feasibility of fiber sensing technology based on Brillouin Optical Time Domain Reflectometer (BOTDR) for bridge health monitoring, a distributed optical fiber sensing system is arranged on the surface of reinforced concrete and concrete of simply supported reinforced concrete beam. The on-line monitoring of the strain distribution of component concrete and rebar under various loads was carried out. The experimental results show that the BOTDR optical fiber sensing technology can accurately monitor the strain of the test beam and can identify the structural damage of the beam and can be applied to the bridge health monitoring.