Monitoring Structural Performance of a Supertall Building during 14 Tropical Cyclones

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

2 Scopus Citations
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Detail(s)

Original languageEnglish
Article number04018176
Journal / PublicationJournal of Structural Engineering (United States)
Volume144
Issue number10
Online published14 Jul 2018
Publication statusPublished - Oct 2018

Abstract

Field measurements of wind effects on a 420-meter-high supertall building in Hong Kong were analyzed during the passages of 14 tropical cyclone (TC) events, from 2008 to 2016, with a total recording time duration of 360 h. In this paper, statistical results of wind characteristics of these TCs are presented and discussed; modal parameters of the building such as natural frequencies and damping ratios are estimated using the random decrement technique, which is a deterministic time domain method, as well as the Bayesian spectral density approach, which is a recently proposed probabilistic frequency domain method; and the serviceability of the skyscraper during these violent TC events are evaluated against three comfort criteria. This study uses a substantial amount of field data to yield accurate estimations of the modal parameters of the building to further the understanding of wind effects on supertall buildings in TC-prone regions to provide useful information for their wind-resistant designs.

Research Area(s)

  • Bayesian spectral density approach, Field measurement, Modal parameters, Random decrement technique, Serviceability, Supertall building, Tropical cyclone, Wind effect