Determination Process of Drift Capacity for Seismic Performance Evaluation of Steel Tall Buildings

초고층 철골 건축물의 내진성능평가를 위한 Drift Capacity 산정 프로세스

  • 민지연 (고려대학교 대학원 건축공학과) ;
  • 오명호 (현대건설(주) 기술연구소) ;
  • 김명한 (대진대학교 건축공학과) ;
  • 김상대 (고려대학교 건축공학과)
  • Received : 2006.04.14
  • Accepted : 2006.06.21
  • Published : 2006.08.27

Abstract

The actual performance of a building during an earthquake depends on many factors. The prediction of the seismic performance of a new or existing structure is complex, due not only to the large number of factors that need to be considered and the complexity of the seismic response, but also due to the large inherent uncertainties and randomness associated with making these predictions. A central issue of this research is the proper treatment and incorporation of these uncertainties and randomness in the evaluation of structural capacity and response has been adopted in the seismic performance evaluation of steel tall buildings to account for the uncertainties and randomness in seismic demand and capacities in a consistent manner. The basic framework for reliability-based seismic performance evaluation and the key factors for statistical studies were summarized. A total of 36 target structures that represent typical tall steel buildings based on national building code (KBC-2005) were designed for the statistical studies of demand factor s and capacity factors. The incremental dynamic analysis (IDA) approach was examined through the simple steel moment frame building in determination of global drift capacity.

지진의 피해를 입은 후 건물의 실제 성능은 많은 요인에 영향을 받는다. 신축 구조물이나 기존 구조물의 지진 성능 예측은 복잡하다. 그 이유는 고려되어져야 하는 많은 요소와 지진 반응의 복잡성뿐만 아니라 이러한 예측과 관련된 타고난 불확실성 과 가변성 때문이다. 본 연구의 목적은 구조물의 능력 평가와 반응 요구에서의 불확실성과 가변성의 적절한 취급과 결합이다. 일관된 방법으로 demand와 capacity에서의 불확실성과 가변성을 설명하기 위하여 신뢰성 이론에 기초한 성능평가의 접근 방법이 초고층 철골 건축물의 내진성능평가 법으로 채택되어져 오고 있다. 신뢰성 이론에 근거한 내진성능평가에 대한 기본 체계와 통계적 연구에 대한 핵심 요소를 요약하였다. dema nd 요소와 capacity 요소의 통계적인 분석을 위하여 국내 기준에 맞는 전형적인 초고층 철골 건축물을 36개 설계하였다. global drift capacity 산정을 위해 철골 모멘트 골조 건물을 증분동해석 하였다.

Keywords

References

  1. 1997, NEHRP Guidelines for the Seismic Rehabilitation of Buildings, FEMA-273, Federal Emergency Management Agency
  2. 1997, Applied Technology Council, Seismic Evaluation and Retrofit of Concrete Buildings, ATC-40 Report
  3. 2003, International Building Code, International Code Council
  4. 2005, 건축구조설계기준 (건설교통부 고시), 건설교통부
  5. 2000, State of Art Report on Performance Prediction & Evaluation of Moment-Resisting Steel Frame Structures, FEMA-355F, Federal Emergency Management Agency
  6. Lee, K. and Fouch, D. A., 2000, Performance Prediction and Evaluation of Steel Special Moment Frames for Seismic Loads, SAC Background Document No. SAC/BD-00/25, SAC Joint Venture
  7. Yun, S. and Fouch, D. A., 2000, Performance Prediction and Evaluation of Low and Intermediate Moment Frame Buildings for Seismic loads, SAC Background Document No. SAC/BD-00/26, SAC Joint Venture
  8. 2000, Recommended seismic design criteria for new steel moment-frame buildings, FEMA-350, Federal Emergency Management Agenc
  9. 2000, Recommended seismic evaluation and upgrade criteria for existing welded steel moment-frame buildings, FEMA-351, Federal Emergency Management Agency
  10. Wen, Y. K and Foutch, D. A., 1997, Proposed statistical and reliability framework for comparing and evaluating predictive models and evaluation and design, and critical issues in developing such framework, SAC Background Report No. SAC/BD-97/03, SAC Joint Venture
  11. Jalayer, F. and Cornell, C., 1998, Development of a probability-based demand and capacity factor design seismic format, SAC Background Document, SAC Joint Venture
  12. Hamburger, R. O., Cornell, C., and Foutch, D. A., 2000, Performance basis of guidelines for evaluation, upgrade and design of moment-resisting steel frames, 12th World Conference of Earthquake Engineering
  13. Lee, K. and Fouch, D. A., 2002, Performance evaluation of new steel frame buildings for seismic loads, Earthquake Engineering and Structural Dynamics, Vol. 31
  14. Lee, K. and Fouch, D. A., 2002, Seismic performance evaluation of pre-Northridge steel frame buildings with brittle connections, Journal of Structural Engineering, ASCE, Vol. 128, No. 4