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

Architectural Institute of Korea (대한건축학회)
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Evaluation of Amplitude-Dependent Damping Ratio and Natural Frequency of a Tall RC Building based on Long Term Measurement Data

장기계측에 기반한 초고층 RC 건축물 감쇠비와 고유진동수의 응답의존성 분석

  • 정희경 (경북대학교 건축토목공학부) ;
  • 김홍진 (경북대학교 건축토목공학부) ;
  • 최선영 (포스코건설 기술연구소)
  • Received : 2014.10.20
  • Accepted : 2014.12.29
  • Published : 2015.01.30
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Abstract

The amplitude dependence of the natural frequency and damping ratio of tall RC building is investigated based on the long term measurement data. In order to verify the identified dynamic properties, the time domain and frequency domain methods are used and the results are compared. It was found that the natural frequency decreases as the response increases clearly. On the other hand, there is no noticeable response dependancy of damping ratio even though the damping ratio increases slightly as the response increases.

Keywords

Acknowledgement

Supported by : 국토교통부

References

  1. 김지영, 김주연, 김미진, 유은종, 김대영, "실측 및 해석모델에 의한 철근콘크리트조 주상복합건물의 모드특성", 한국전산구조공학회 논문집, 제22권, 3호, p.p.289-296, 2009.
  2. 김지영, 유은종, "대공간 구조물 풍응답 영향인자 분석", 한국풍공학회 2012년 제 15회 학술대회, p.p.115-117, 2012.5
  3. 정진희, 김홍진, 최선영, "풍하중을 받는 초고층 건축물의 상시진동 계측을 통한 감쇠비 계측값과 국내외 감쇠비 제안식 비교", 대한건축학회논문집, 제29권, 4호, p.p.11-18, 2013. https://doi.org/10.5659/JAIK_SC.2013.29.4.11
  4. 황성기, 김홍진, 강남철, 조지성, "진동대를 이용한 구조물의 응답가속도 크기에 따른 동특성 변화 연구", 한국풍공학회논문집, 제16권, 4호, p.p. 157-165, 2012.
  5. Brincker, R. Zhang, L., and Anderson, P. "Modal identification from ambient responses using frequency domain decomposition", in Proc. of the International Modal Analysis conference (IMAC), San Antono, Texas, 2000
  6. Jeary, A.P., "Damping in tall buildings-A mechanisom and a predictor", Earthquake Engineering & Structural Dynamics, Vol. 14, p.p.733-750, 1986.11 https://doi.org/10.1002/eqe.4290140505
  7. Li Q.S., Fang J.Q., Jeary A.P., Wong C.K., "Full scale measurements of wind effects on tall buildings", Journal of Wind Engineering and Industrial Aerodynamics Vol. 74-76, p.p.741-750, 1998.4 https://doi.org/10.1016/S0167-6105(98)00067-1
  8. Peeters, B., De Roeck, G., "Reference-Based Stochastic Subspace Identification for Output-Only Modal Analysis", Mechanical Systems and Signal Processing, Vol.13, Issue.6, p.p.855-878, 1999. https://doi.org/10.1006/mssp.1999.1249
  9. Satake, N,. Suda, K., Arakawa, T, Sasaki, A., and Tamura, Y. "Damping Evaluation Using Full-Scale Data of Buildings in Japan", Journal of Structural Engineering, Vol. 129, p.p.470-477, 2003.4 https://doi.org/10.1061/(ASCE)0733-9445(2003)129:4(470)
  10. Tamura, Y. "Amplitude Dependency of Damping in Buildings and Critical Tip Drift Ratio", International Journal of High-Rise Buildings, Vol.1, p.p.1-13, 2012.4