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Seismic Performance Evaluation of Freeform Diagrid System  

Ko, Chang-Kyun (고려대학교 건축사회환경공학과)
Ju, Young-Kyu (고려대학교 건축사회환경공학과)
Kim, Sang-Dae (고려대학교 건축사회환경공학과)
Publication Information
Journal of Korean Society of Steel Construction / v.23, no.2, 2011 , pp. 189-198 More about this Journal
Abstract
Many new structural systems have been developed to build free-form structures, which is the new architectural trend for aesthetic beauty. The diagrid system resists both gravity and later loads, with its perimeter-diagonal columns. In the current seismic-design provisions, however, a seismic-performance factor for a new structural system has not yet been provided. ATC-63 provides a new methodology for defining various seismic-performance factors, including the response modification factor. In this paper, nonlinear static and dynamic analyses were conducted for the 3D diagrid frame, with each load applied at $0-180^{\circ}$ degrees. Through these analyses, the seismic performance of the diagrid system was evaluated.
Keywords
freeformed; diagrid; ATC-63; push-over analysis; IDA;
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