비정형 초고층 건물의 변동 풍압

서지정보

ㆍ발행기관 : 한국공간구조학회 ㆍ수록지정보 : 한국공간구조학회지 / 13권 / 1호
ㆍ저자명 : 김용철, 칸다 준, 타무라 유키오, 윤성원

목차

Abstract
1. 서 론
2. 풍동실험개요
3. 풍동실험 결과 및 고찰
3.1 풍압계수
3.2 변동풍압의 파워스펙트럼
3.3 변동풍압의 코히렌스
3.4 모형 주변의 변동풍속
4. 결과
감사의 글
참고문헌

영어 초록

Recent tall buildings tend to have unconventional shapes as a prevailing, which is effective for suppressing across-wind responses. Suppression of across-wind responses is a major factor in tall building projects, and the so called aerodynamic modification method is comprehensively used. The purpose of the present study is to investigate the pressure fluctuations on tapered and setback tall buildings, including peak pressures, power spectra and coherences through the synchronous multi-pressure sensing system techniques. And flow measurements around the models were conducted to investigate the condition of vortex shedding. The results show that by tapering and setback, different distributions of mean pressure coefficients at leeward surface were found, which is caused by the geometric characteristics of the models. And the power spectra of wind pressures at sideward surface become wideband and the peak frequencies are different depending on heights, which makes the correlation near the Strouhal component low or even negative. The differences in shedding frequencies were also confirmed by the flow fields around the models.

참고 자료

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