Abstract:This paper proposes a method to identify the time-variant modal frequencies of high-rise buildings and applies the method to the field measurements from a 68-story high-rise building during Super Typhoon Mangkhut (September 16, 2018). The analyzed results show that the fundamental natural frequencies of the monitored building first gradually decreased by about 9% and then returned to 94% of the original values over time. Moreover, the effects of timevariant modal frequencies on damping estimation of high-rise … Show more
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