한국강구조학회 논문집 (Journal of Korean Society of Steel Construction)

  • 제18권5호
  • /
  • Pages.585-596
  • /
  • 2006
  • /
  • 1226-363X(pISSN)
  • /
  • 2287-4054(eISSN)
한국강구조학회 (Korean Society of Steel Construction)
권호 표지

지진 하중을 받는 철골 모멘트 골조 빌딩에 대한 반응수정계수의 평가

Evaluation of Response Modification Factors for Steel Moment Frame Buildings Subjected to Seismic Loads

  • 투고 : 2006.05.15
  • 심사 : 2006.09.25
  • 발행 : 2006.10.27
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

이 연구의 목적은 높은 지진 위험도를 가진 지역에 위치한 철골조 모멘트 구조물에 대한 반응수정계수의 영향을 평가함을 목표로 하고 있다. 3층, 9층, 그리고 20층으로 구성된 구조물 모델이 2000 International Building Code(IBC) 기준과 각각의 다른 반응수정계수들(8, 9, 10, 11, 12)에 따라 설계되었다. 이에 따라 전체 30개의 구조물이 50년 동안의 2% 초과 확률을 가지는 20개의 지반 운동에 대해 변위요구와 변위능력 값이 조사되었다. 이 결과는 현재의 지진 기준에 따라 설계된 표준적인 구조물과의 성능 비교를 통해 반응수정계수의 변화에 따른 효과를 조사하였다. 본 연구에서 3층 및 9층 구조물은 기존의 반응수정계수 값 8에 비해 크게 설계되었음에도 불구하고 붕괴방지의 성능목표를 만족하는데 안정적인 반응을 보여 주었다. 그러나 2000 IBC에서 명시하고 있는 탄성설계스펙트럼(CS)에 대한 최소 값의 적용 없이 설계된 20층 구조물은 붕괴방지의 성능목표에 대해 낮은 내진성능을 보여 주었다.

This study focuses on the seismic behavior of 3-, 9-, and 20-story steel moment resisting frame (MRF) structures designed in accordance with the 2000 International Building Code using different Response Modification factors (R factors), i.e., 8, 9, 10, 11, and 12. For a detailed case study, 30 different structures were evaluated for 20 ground motions representing the hazard level, which is equal to a 2% probability in 50 years (2% in 50 years). The results showed that the current R factors provide conservative designs for the 3- and 9-story buildings for the Collapse Prevention performance objective. the 20-story buildings, which were designed without using the minimum requirement of spectral acceleration CS prescribed in IBC 2000, did not satisfy the seismic performance for Collapse Prevention performance.

키워드

참고문헌

  1. SEAOC, Recommended lateral force requirements and commentary. Seismology Committee, Structural Engineers Association of California, Sacramento, CA, 1959
  2. ATC, Tentative recommendations for the development of seismic regulations for buildings. ATC 3-06 Report, Applied Technology Council, Redwood City, CA, 1978
  3. Miranda, E. and Bertero, V. V., Evaluation of strength reduction factors for earthquake- resistant design. Earthquake Spectra, EERI, V.10, No.2, 1994, pp. 357-379 https://doi.org/10.1193/1.1585778
  4. Newmark, N. M. and Hall, W. J., Earthquake Spectra and Design. EERI Monograph Series, EERI, Oakland, CA, 1982
  5. ATC, A critical review of current approaches to earthquake-resistant design. ATC-34, Applied Technology Council, Redwood City, CA, 1995
  6. Foutch, D. A. and Shi, S., Effects of hysteresis types on the seismic effects of buildings. Proceeding, 6th U.S. Nat. Conf. on Earthquake Engr., Seattle, WA, May 31-June 4, 1998, Earthquake Engr. Research Institute, Oakland, CA, 1998
  7. Lee, K. and Foutch, D. A. Performance evaluation of new steel frame buildings for seismic loads. J. of Earthquake Engr. & Str. Dynamics, Vol.31, No.3, 2002, pp. 653-670 https://doi.org/10.1002/eqe.147
  8. International Building Code. International Code Council, Falls Church, VA, 2000
  9. Korean Building Code (Structural). 대한건축학회, 2005
  10. Prakash, V., Powell, G.H., and Campbell, S, Drain- 2DX, Element description and user guide. Univ. of California, Berkeley, CA, 1993
  11. Shi, S. and Foutch, D.A., Connection element (type 10) for Drain-2DX. Civil Eng. Report, Univ. of Illinois at Urbana-Champaign, IL, 1997
  12. Krawinkler, H. and Al-Ali, A. Seismic demand evaluation for a 4-story steel frame structure damaged in the Northridge Earthquake, The Structural Design of Tall Buildings, Vol. 5, No. 1, March 1996, pp 1-27 https://doi.org/10.1002/(SICI)1099-1794(199603)5:1<1::AID-TAL65>3.0.CO;2-W
  13. Venti, M and Engelhardt M.D., Brief report of steel moment conn. test, secimen DBBW (Dog bone - bolted web). SAC Background Document SAC/ BD-99/26, SAC Joint Venture, Richmond, CA, 1997
  14. Vamvatsikos, D. and Cornell, C. A., Incremental Dynamic Analysis. J. of Earthquake Engr. and Structural Dynamics, Vol.31, No.3, 2002, pp. 491-514 https://doi.org/10.1002/eqe.141
  15. FEMA 355 Seismic Design Criteria for Steel Moment- Frame Structures, Federal Emergency Management Agency, Washington D.C. 2000
  16. Somerville, P., Smith, N, Puntamurthula, S, and Sun, J., Development of ground motion time histories for phase 2 of the FEMA/SAC steel project. SAC Background Document SAC/BD-97/04, SAC Joint Venture, Richmond, CA, 1997
  17. Ang, A. H-S. and Tang, W.H. Probability Concepts in Engineering Planning and Design Vol.I and II, John Wiley & Sons, New York, 1975