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http://dx.doi.org/10.7734/COSEIK.2020.33.1.1

Impact of the Aerodynamic Characteristics of Twin Buildings on Wind Responses  

Kim, Bub-Ryur (Department of Architectural Engineering, Kyungil Univ.)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.33, no.1, 2020 , pp. 1-7 More about this Journal
Abstract
The wind responses of twin buildings are determined by the characteristics of wind loads and the dynamic characteristics of the structural systems of the buildings. In this study, the characteristics of wind pressure that influence wind responses were identified for two different spacings between the twin buildings using a wind tunnel test and the proper orthogonal decomposition (POD) method. Structural dynamic characteristics were also identified using 3D structural system modeling. The double modal transformation method was utilized to evaluate the characteristics of wind pressure for across-wind and along-wind conditions and the effect of the dynamic characteristics of each structure on the wind responses. The channeling and vortex effects were identified through the POD method. Across-wind loads were significantly affected by the spacings between the twin buildings, whereas along-wind loads were minimally affected. Similarly, while using the double modal transformation method, a significant difference was noticed in case of the cross-participation coefficients in the across-wind direction condition for the different spacings between the buildings; however, the along-wind direction condition showed negligible difference. Therefore, the spacing between the two buildings plays a more important role in across-wind responses compared to along-wind responses.
Keywords
double modal transformation method; twin building; tall building; wind-induced response; proper orthogonal decomposition;
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Times Cited By KSCI : 2  (Citation Analysis)
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