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Open AccessArticle

Damping and Natural Period Evaluation of Tall RC Buildings Using Full-Scale Data in Korea

1
POSCO Global R&D Center, Incheon 21985, Korea
2
Department of Architectural Engineering, Kyungpook National University, Daegu 41566, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(5), 1568; https://doi.org/10.3390/app10051568
Received: 31 December 2019 / Revised: 20 February 2020 / Accepted: 20 February 2020 / Published: 25 February 2020
(This article belongs to the Special Issue Selected Papers from IMETI 2018)
In recent years, the main usage of reinforced concrete (RC) structures in Korea has shifted from low-rise residential and commercial buildings to high-rise buildings. Because an increasing number of high-rise RC buildings are being built, especially in coastal cities, which are periodically hit by typhoons, wind-induced motion and the corresponding serviceability issues have attracted considerable attention. Natural period and damping ratio are the most important factors for estimating the design wind load and wind-induced response in the design of tall buildings. However, the Korean Building Code (KBC 2009) does not specify empirical formulae for estimating the natural period and damping ratio for wind design, unlike seismic design. In this study, the damping ratio and natural period of existing concrete buildings in Korea are measured and compared to those obtained using the formulae provided in various codes and research works. Furthermore, design formulae for estimating natural frequency and damping ratio for wind design are proposed based on the measured data. For this purpose, ambient vibration measurement is performed for 58 RC buildings with heights of 24.2–305 m. View Full-Text
Keywords: natural period; damping ratio; RC buildings; full-scale data; system identification; wind design natural period; damping ratio; RC buildings; full-scale data; system identification; wind design
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MDPI and ACS Style

Ha, T.; Shin, S.-H.; Kim, H. Damping and Natural Period Evaluation of Tall RC Buildings Using Full-Scale Data in Korea. Appl. Sci. 2020, 10, 1568. https://doi.org/10.3390/app10051568

AMA Style

Ha T, Shin S-H, Kim H. Damping and Natural Period Evaluation of Tall RC Buildings Using Full-Scale Data in Korea. Applied Sciences. 2020; 10(5):1568. https://doi.org/10.3390/app10051568

Chicago/Turabian Style

Ha, Taehyu; Shin, Seung-Hoon; Kim, Hongjin. 2020. "Damping and Natural Period Evaluation of Tall RC Buildings Using Full-Scale Data in Korea" Appl. Sci. 10, no. 5: 1568. https://doi.org/10.3390/app10051568

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