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

Architectural Institute of Korea (대한건축학회)
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Comparison of Design Code Damping Formulae and Measured Damping Ratios of Tall Buildings under Wind Loads

풍하중을 받는 초고층 건축물의 상시진동계측을 통한 감쇠비 계측값과 국내외 감쇠비 제안식 비교

  • 정진희 (경북대 건축토목공학부) ;
  • 김홍진 (경북대 건축토목공학부) ;
  • 최선영 (포스코건설 R&D Center 건축연구그룹)
  • Published : 2013.04.25
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Abstract

It is very important to access the damping ratio accurately in the wind design of tall buildings, but the damping ratio is not specified in the Korean Building Codes and thereby the values provided in foreign codes are adopted somewhat arbitrarily by engineers. The significant portion of concrete tall buildings in Korea has the shear wall structure system, and residential buildings have larger gravity load than buildings in other countries due to the use of floor heating system. Therefore, the damping ratio provided in foreign codes may not be directly applied to design of tall buildings in Korea. In this study, the damping ratio of actually built concrete buildings are measured and compared to those provided in foreign codes. It was found that damping ratio of tall concrete buildings decreases as the height of the buildings increases and the measured values are significantly smaller than 2.0% of the ASCE code.

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References

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