In this study the progressive collapse behaviors of helical buildings were evaluated by nonlinear static and dynamic analysis. 36-story diagrid buildings with twist angles of 0, 90 and 180 degrees were designed as analysis model and progressive collapse analyses were carried out by removing first-story columns. The analysis results showed that helical buildings designed per current design codes generally had enough resistance to progressive collapse caused by the sudden loss of corner columns in the diagrid system.

• 한승호(성균관대학교 초고층장대교량학과 석사과정) | Han, Seung Ho
• 권광호(성균관대학교 건설환경시스템공학과 석사과정) | Kwon, Kwang Ho
• 김진구(성균관대학교 건축공학과 교수) | Kim, Jin Koo