대한건축학회논문집:구조계 (Journal of the Architectural Institute of Korea Structure & Construction)

  • 제31권4호
  • /
  • Pages.55-62
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  • 2015
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  • 1226-9107(pISSN)
  • /
  • 2384-1788(eISSN)
대한건축학회 (Architectural Institute of Korea)
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풍직각방향과 비틀림방향의 응답상관을 고려한 풍하중 조합

Wind Loading Combination considering Response Correlations between Acrosswind and Torsional Directions

  • 김원술 (동경공예대학교 풍공학연구센터) ;
  • 김용철 (동경공예대학교 건축학과)
  • 투고 : 2014.12.31
  • 심사 : 2015.03.18
  • 발행 : 2015.04.30
⟨ 이전 논문 다음 논문 ⟩

초록

The wind tunnel test was conducted to investigate characteristics of fluctuating wind forces acting on tall buildings for various side ratios (D/B=1.0, 1.1, 1.2, 1.3, 2.0 and 3.0) and different terrain roughnesses. Further, the wind load combination was examined by the correlation of the displacement response between acrosswind and torsional directions through Spectral Modal Analysis Method and Time History Analysis Method. As a result, there was no significant effect of the changing of terrain roughnesses on fluctuating moment coefficients for acrosswind and torsional directions, but they were varied with the changing of wind directions. Acrosswind overturning moment coefficients were highly correlated with the torsional moment coefficient with the increase in wind directions. The response and correlation obtained by Time History Analysis were good agreement with those of Spectral Modal Analysis. Also, the response correlation between acrosswind and torsional directions was highly affected by natural frequency ratios. Hence, the wind load combination for acrosswind and torsional directions shall be considered that when the natural frequencies between acrosswind and torsional directions are close to each other.

키워드

과제정보

연구 과제 주관 기관 : 한국연구재단

참고문헌

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