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Seismic Behavior of Web-Continuous Diagrid Nodes  

Jeong, In Yong (고려대학교 건축사회환경공학과)
Kim, Young Ju (고려대학교 건축사회환경공학과)
Ju, Young K (고려대학교 건축사회환경공학과)
Kim, Sang Dae (고려대학교 건축사회환경공학과)
Publication Information
Journal of Korean Society of Steel Construction / v.21, no.4, 2009 , pp. 375-384 More about this Journal
Abstract
The application of the diagrid structural system has increased of late, but cyclic loadings such as winds and earthquakes cannot be fully understood through only an analytical study due to the difficulty of considering its welding property. In this study, diagrid nodes that had been scaled down to 1/5 of their full sizes were tested to find out their structural behavior under seismic or wind loads. Four specimens were used with five parameters, including the welding method and the design details. Cyclic loading tests were carried out, where a tensile load was applied to one brace member and a compression load to the other. The major failure modes in the tests were only failure of bending with tensile stress and tension failure. The welding method and the design details had no effect on the initial stiffness and yielding stress but play a significant role in the failure mode and energy dissipation, respectively.
Keywords
Diagrid structural system; Node; Lateral force resistance; Welding method; Design detail; Failure mode;
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