Multipoint Synchronous Monitoring of Cladding Pressures on a 600-m-High Skyscraper during Super Typhoon Mangkhut 2018
Publication: Journal of Structural Engineering
Volume 147, Issue 7
Abstract
This paper analyzes the wind pressures on the claddings of a 600-m-high skyscraper in Shenzhen, China, during Super Typhoon Mangkhut on September 16, 2018. A synchronous monitoring system that included 48 pressure transducers was implemented to measure the cladding pressures of the skyscraper during the typhoon event. Based on field measurements, the mean, root-mean-square fluctuating, peak (maximum and minimum) pressure coefficients are presented and discussed. Then the mean and peak pressure coefficients are used to validate the design values stipulated in the design code of China. Comparative study finds that the design values of the peak pressure coefficients on the windward and leeward faces of the skyscraper are conservative, while those on the side faces are nonconservative. As for the mean pressure coefficients, the design values are conservative for all faces. Moreover, the non-Gaussian characteristics, power spectral densities, coherences, and correlations of the measured cladding pressures are analyzed to explore the mechanisms of pressure fluctuations on the four sides of the skyscraper. This paper aims to enhance understanding of cladding pressures of high-rise buildings under extreme wind conditions and, therefore, to provide useful information for future designs of wind-resistant skyscrapers in tropical cyclone–prone regions.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
The work described in this paper was fully supported by a grant from the Research Grants Council of Hong Kong Special Administrative Region, China (Project CityU 11207519) and a grant from National Natural Science Foundation of China (Project 51778554). The authors would like to express their gratitude to Dr. Y.H. He and Mr H.Y. Shi for their participation in the monitoring project reported in this paper.
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Published In
Journal of Structural Engineering
Volume 147 • Issue 7 • July 2021
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© 2021 American Society of Civil Engineers.
History
Received: Jul 19, 2020
Accepted: Feb 8, 2021
Published online: Apr 16, 2021
Published in print: Jul 1, 2021
Discussion open until: Sep 16, 2021
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