Monitoring of structural modal parameters and dynamic responses of a 600m-high skyscraper during a typhoon

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Detail(s)

Original languageEnglish
Article numbere1456
Journal / PublicationStructural Design of Tall and Special Buildings
Volume27
Issue number6
Early online date3 Dec 2017
Publication statusPublished - 25 Apr 2018

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.

Research Area(s)

  • field measurement, modal parameter, skyscraper, structural dynamic property, typhoon, wind-induced response

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