A study on wind-induced vibration of super high rise building by multi-degree-of freedom model

TL;DR: In this article, an active tuned mass damping (ATMD) system was used to suppress the wind-induced vibrations of a super-tall building during a typhoon, and the building's acceleration responses were well confined within the range stipulated in the International Standards Organization for serviceability concerns.

TL;DR: In this paper, a three-degree-of-freedom aeroelastic model of the standard CAARC tall building with a rectangular cross section was tested in both atmospheric-boundary-layer (ABL) wind tunnel and tornado simulator to assess its susceptibility to wind-induced vibration in straight-line wind and tornado wind and compare the two responses.

TL;DR: In this paper, the authors investigated wind-induced responses of a 300'm high chimney by using wind tunnel tests on an aeroelastic model and found that the response of the roughened model is much smaller than that for the model without roughness element, indicating that ignoring the Reynolds number effect will overestimate the response.

Abstract: This paper presents field measurement results of structural dynamic properties and wind‐induced responses of 600m‐high Ping‐An Finance Center in Shenzhen during the passage of Typhoon Haima. The field measurements included wind speed, wind direction, and structural acceleration responses during the typhoon. Analysis of the field measurements is carried out to investigate the wind‐induced structural vibrations and dynamic properties of the skyscraper under typhoon condition. In the analysis, natural frequencies and damping ratios of Ping‐An Finance Center are estimated using Peak‐Picking method, half‐power bandwidth method in frequency domain, and random decrement technique in time domain, respectively. Two band‐pass filtering methods, namely, elliptical filtering method and Kaiser‐window FIR filter, are adopted to deal with the measured acceleration signals. Consequently, the modal parameters identified with the Peak‐Picking, half‐power bandwidth, and random decrement technique methods are presented and discussed in detail. In addition, the probabilistic characteristics of the recorded acceleration responses are analyzed using the generalized extreme value distribution, and then the serviceability of the skyscraper during the typhoon is evaluated.