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http://dx.doi.org/10.9712/KASS.2021.21.1.105

Dynamic Response Analysis of Twisted High-Rise Structures by Plane Rotation Angle  

Lee, Da-Hye (Department of Architecture, Yeungnam University)
Kim, Hyun-Su (School of Architecture, Sunmoon University)
Kang, Joo-Won (School of Architecture, Yeungnam University)
Publication Information
Journal of Korean Association for Spatial Structures / v.21, no.1, 2021 , pp. 105-112 More about this Journal
Abstract
In this paper, the dynamic response was analyzed by performing linear dynamic analysis using historic earthquake loads on twisted-shaped structures and fixed structure among free-form high-rise structures with atypical elevation shape following prior studies. In addition, the dynamic characteristics of the analysis models according to the plane rotation angle of the twisted structure were compared and analyzed. As a result of the analysis, as the plane rotation angle of the twisted structure increased, the interlayer deformation rate increased in the high-rise part of 50th floors or more. The story shear force and the story absolute acceleration were similar in the entire structure. In the case of the story shear force, the response of the twisted shape model was rather reduced in the middle part. As a result of analyzing the dynamic response, the vulnerable layer where the response amplification of the twisted structure occurs was found to be 31st story.
Keywords
Atypical structure; High-rise building; Twisted shaped; Torsional angle; Dynamic response analysis;
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Times Cited By KSCI : 2  (Citation Analysis)
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