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http://dx.doi.org/10.9712/KASS.2022.22.1.33

Analysis of Seismic Response by the Movement of the Plane Rotation Axis and the Core of Atypical Structures  

Lee, Da-Hye (Dep. of Architecture, Yeungnam University)
Kim, Hyun-Su (Division of Architecture, Sunmoon University)
Kang, Joo-Won (School of Architecture, Yeungnam University)
Publication Information
Journal of Korean Association for Spatial Structures / v.22, no.1, 2022 , pp. 33-40 More about this Journal
Abstract
When the center of stiffness and the center of mass of the structure differ under the seismic load, torsion is caused by eccentricity. In this study, an analysis model was modeled in which the positions of the core and the plane rotation axis of a 60-story torsional atypical structure with a plane rotation angle of 1 degree per floor were different. The structural behavior of the analysis model was analyzed, and the earthquake response behavior of the structure was analyzed based on the time history analysis results. As a result, as the eccentricity of the structure increased, the eccentricity response was amplified in the high-rise part, and the bending and torsional behavior responses were complex in the low-order vibration mode. As a result of the analysis, the maximum displacement and story drift ratio increased due to the torsional behavior. The maximum story shear force and the story absolute maximum acceleration showed similarities for each analysis model according to the shape of the vibration mode of the analysis model.
Keywords
Atypical structures; High-rise building; Eccentric core; Plane rotation axis; Seismic response analysis;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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