【摘要】 介绍了两类先进的分布式光纤传感器技术,即光纤光栅(FBG)和布里渊光时域反射计(BOTDR);分别在 T型RC简支梁和连续配筋混凝土路面(CRCP)中布置了FBG和BOTDR分布式光纤传感系统,对简支梁混凝土动、静应变以及路面板中连续钢筋和混凝土应变进行了实时监测。研究结果表明,FBG和 BOTDR在桥梁和路面等一些土木工程结构的健康监测中具有重要的应用前景。更多还原

【Abstract】 Two kinds of novel distributed fiber optic sensing technique, i.e., Fiber Bragg Grating (FBG) and Brillouin Optical Time Domain Reflectometer (BOTDR), are introduced in this paper. The two distributed fiber optic sensing systems based on FBG and BOTDR were implemented on a simple supported reinforced concrete beam and a continuously reinforced concrete pavement (CRCP), respectively. The dynamic and static strains at the upper side of the beam was real-time monitored. In another experiment, the strain of the steel and concrete in the CRCP was also detected on-line. The experimental results show that the FBG and BOTDR technologies are able to find wide applications to structural health monitoring.更多还原