Verification of analytical model of the lkistuki Bridge by ambient vibration measurement

The model used for bridge analyses of the Ikitsuki Bridge which is truss bridge with long spans in Nagasaki Prefecture have yet to be validated, although the bridge have undergone natural vibration analysis and nonlinear earthquake response analysis. This study compared the measured natural frequencies of microtremors with the analytical values calculated. The study confirmed that the analysis models are appropriate, since the models produced values for the natural frequencies of these bridges that closely corresponded to the measured values