A spectral method to predict wind-induced peak response of building with viscoelastic dampers by considering its frequency dependency

When a building with viscoelastic dampers is subjected to wind excitations, its dynamic properties such as vibration period and damping ratio can very. depcnding; on the frequency contents of the excitation. This is due to frequency sansitivity of the viscoclustic damper, and contradicts with the basis of the convention spectral or modal analysis method using the constant dynamic properties evaluated at, resonant state of the building. This paper points out the need for considering frequency sensitivitv of a building when it possesses velocity-dependent dampers such as viscoelastic dumpers, and proposes for the first time a new spectral or modal analysis method to predict the wind-induced response, considering the frequency sensitivity of the viscoelastic damper.