In recent years, it is pointed that the natural period of the buildings varies by the earthquakes or aging degradation. Hence the structural health monitoring (SHM) is developed in order to detect the degradation of the structural seismic performance. The authors have been performing the real-time vibration monitoring by using the new fiber Bragg grating (FBG) accelerometers for 3 years. Based on these, this paper shows the results of vibration monitoring by using the FBG accelerometers. Also it is proposed that the FBG accelerometers can be easily applied to the existing buildings for reasonable SHM.
