Wind Load Combinations of Atypical Supertall Buildings

Yong Chul Kim; Yukio Tamura; Sangdae Kim

doi:10.1061/(ASCE)ST.1943-541X.0001359

Wind Load Combinations of Atypical Supertall Buildings

Yong Chul Kim, Yukio Tamura, Sangdae Kim

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Wind loads are generally divided into along-wind, across-wind, and torsional loads, but in reality they occur simultaneously in time and space. Furthermore, because they do not show their maximums at the same instant, they need to be combined appropriately. In this study, pressure measurements were conducted on atypical supertall buildings to investigate wind load combinations. Using a simplified reference model with four columns, analyses in the time domain were conducted, and this paper proposes combination rules based on the concept of combination factor that can be applied to atypical supertall buildings. The combination factor for a square model is approximately 0.5, and those for atypical models differ depending on building shape. Two methods are discussed in the determination of combination factors, and comparisons between peak normal stresses by analysis and combination factor show relatively good agreement, ranging mostly within ±5%.

Original language	English
Article number	04015103
Journal	Journal of Structural Engineering (United States)
Volume	142
Issue number	1
DOIs	https://doi.org/10.1061/(ASCE)ST.1943-541X.0001359
Publication status	Published - 2016 Jan 1

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2013R1A6A3A01064632). And this study was partly funded by the Ministry of Education, Culture, Sports, Science and Technology, Japan, through the Global Center of Excellence Program, 2008-2012. The authors also thank Hideyuki Tanaka, Kazuo Ohtake, and Masayosi Nakai at Takenaka Corporation in Japan.

Publisher Copyright:
© 2015 American Society of Civil Engineers.

Keywords

Atypical supertall building
Combination factor
Peak normal stress
Tip displacement
Wind effects
Wind load combination
Wind tunnel test

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1061/(ASCE)ST.1943-541X.0001359

Cite this

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abstract = "Wind loads are generally divided into along-wind, across-wind, and torsional loads, but in reality they occur simultaneously in time and space. Furthermore, because they do not show their maximums at the same instant, they need to be combined appropriately. In this study, pressure measurements were conducted on atypical supertall buildings to investigate wind load combinations. Using a simplified reference model with four columns, analyses in the time domain were conducted, and this paper proposes combination rules based on the concept of combination factor that can be applied to atypical supertall buildings. The combination factor for a square model is approximately 0.5, and those for atypical models differ depending on building shape. Two methods are discussed in the determination of combination factors, and comparisons between peak normal stresses by analysis and combination factor show relatively good agreement, ranging mostly within ±5%.",

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Wind Load Combinations of Atypical Supertall Buildings

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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