This study uses the in-structure recordings to investigate the vibration characteristics\nof a 51-story steel high-rise building in response to a major earthquake,\ntyphoon and ambient vibrations. This presents an opportunity for us\nto compare the building behaviors, especially their modal properties under\ndifferent types of excitation. First, we use a two-stage regression procedure to\nobtain the relations of the building response, including peak floor acceleration\nand velocity as a function of the wind speed and floor height of the building.\nSecondly, the structural dynamic characteristics of the high rise building, including\nthe transfer functions and natural frequencies, excited by the Chi-Chi\nearthquake, Typhoon Aere, and ambient vibrations are also determined and\ncompared. As a result, from the formulas for building response, the predicted\npeak floor acceleration is higher in the lateral (EW) component than in the\nlongitudinal (NS) component. This is probably due to the greater stiffness of\nthe building in the longitudinal direction than in the lateral direction. In addition,\nafter having identified the 1st, 2nd, and 3rd natural frequencies using the\nrecorded data from the earthquake, typhoon and ambient vibrations, the\nranking of the fundamental natural frequencies from low to high is the\nChi-Chi earthquake, Typhoon Aere and the ambient vibrations. This means\nthat greater excitation forces of the earthquake have resulted in lower natural\nfrequencies than that produced by the typhoon and ambient vibrations
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