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논문 기본 정보

자료유형
학술저널
저자정보
김용철 (동경공업대학교)
저널정보
대한건축학회 대한건축학회 논문집 - 구조계 大韓建築學會論文集 構造系 第28 第12號
발행연도
2012.12
수록면
37 - 44 (8page)

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One characteristic of modern tall buildings is that the building shapes are irregular and unconventional. The irregular and unconventional building shapes are resurrection of an old characteristic, motivated by new trends in architecture, but it has advantage of mitigating across-wind responses, which is a major factor in safety and habitability of tall buildings. Many studies on aerodynamic modification have been carried out, but most of the studies have forced on the corner modification, while the studies on taper and setback are limited. Changes of building shapes through taper and setback suppress the strong and periodic vortex shedding, and encourage the flow around a building more 3 dimensionalities, which results in reducing the wind-induced excitations. The results show that the reduction of mean along-wind and fluctuating across-wind overturning moments are apparent in the suburban area than in urban area. A series of the response analyses, the rms displacement responses of the tall buildings with height variations are reduced greatly, while the rms acceleration responses are not necessarily reduced. Lastly, the effect of different natural frequencies of tapered and setback tall buildings on wind-induced response are extensively discussed.

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Abstract
1. 서론
2. 풍동실험개요
3. 결과 및 고찰
4. 결론
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