The purpose of this study is to propose and verify the estimation theory of the vibration proper- ties of a RC bridge in time domain as well as frequency domain by using the responses of passing and parking vehicles. In…
The purpose of this study is to propose and verify the estimation theory of the vibration proper- ties of a RC bridge in time domain as well as frequency domain by using the responses of passing and parking vehicles. In this theory, the responses of several parking vehicles and one passing vehicle are used to extract the eigenfrequency of the bridge for stiffness estimation. Herein the evaluated bridge is assumed to be a sim- ple beam with one dimensional coordinates for simplicity. The vehicles are also assumed to be mass-spring systems, which are correlated with the beam in vibration. This proposed theory was verified by numerical simulation with white noise, and it was found that the identified properties agreed with the assumed values but the estimated values in frequency domain are better than those in time domain.