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Seismic Performance Evaluation of Hexagonal Blocks Infilled RC Frames

육각형 블록을 이용한 채움벽 RC 골조의 채움벽 내진성능평가

  • 장극관 (서울과학기술대학교 건축학부) ;
  • 서대원 ((주)에코닝 지진방재기술연구소) ;
  • 고태현 (서울과학기술대학교 건축공학과)
  • Received : 2011.03.06
  • Accepted : 2011.05.13
  • Published : 2011.07.30

Abstract

RC frames with unreinforced masonry infiledl walls are common in worldwide. Since infilled walls are normally considered as non-structural elements, their presence is often ignored by engineers. In this study, to improve the seismic performance of masonry walls, hexagonal block was developed and the influence of masonry infilled wall on the seismic performance of reinforced concrete(RC) frames that were designed in accordance with current code provisions without the consideration of earthquake loadings are investigated. Two 1/2 scale, single story, single bay, frame specimens were tested. The parameters investigated included that the strength of infilled wallls with respect to that of the lateral load history. The experimental results indicate that infilled walls can significantly improve the lateral stiffness and strength of RC frames. The lateral loads developed by the infilled frame specimen is higher than that of the bare frame. It also indicates that infilled walls can be potentially used to improve the performance of existing nonductile frames. For this purpose. methods should be developed to avoid irreparable damage and catastrophic failure.

일반적으로 조적조는 시공이 용이하고 경제적인 구조로서 국내뿐만 아니라 해외에서도 가장 오래되고 광범위하게 사용되는 구조이다. 조적벽을 RC 골조에 장막벽으로 사용하는 채움벽 형태의 구조는 시공이 용이하고 경제적이기 때문에 저층 주거용 건물, 학교건물 등에 많이 적용되고 있으나, 설계시에는 비구조부재로 취급되어 채움벽의 효과를 반영하지 않고 있다. 본 연구에서는 기존의 사각형 조적개체의 횡력에 대한 취약성을 개선하기 위해 개발된 육각형 블록을 RC 골조 채움벽에 적용한 채움벽 골조에 대한 구조실험을 수행하여 육각형블록 조적채움벽의 효과를 평가하고자 하였다.

Keywords

References

  1. 대한건축학회, 건축구조기준(KBC 2009), 2009.
  2. 권기혁, 나선형, 긴결철물을 이용한 조적치장벽체의 전단거동에 대한 실험연구, 한국구조물진단학회지, 11(2), 2007.
  3. 신종학, 하기주, 이희종, 철근콘크리트 프레임면내 조적벽체의 골조구속에 따른 내진성능 평가 및 개선, 한국구조물진단학회지, 5(3), 2001.
  4. 이정한, 중저층 건축물의 내진성능 및 내진보강, 광운대학교 대학원 박사학위 논문, 2004.
  5. 장극관, 서대원, 한태경, 반복하중을 받는 육각형 블록벽체 전단내력평가, 한국구조물진단학회지, 14(6), 2010.
  6. Angel, J. E., Abrams, D., Shapiro, D., Uzarski, J. Webster, M., Behavior of reinforced concrete frames with masonry infills, Rep. UILU-ENG-94-2005, Dept. of Civ. Engrg., Univ. of Illinois, Urbana Champaign, Ill. 194.
  7. Armin B. Mehrabi, P. Benson Shing, Michael P. Schuller, Experimental Evaluation of Masonry Infilled RC Frames, Journal of Structural Engineering, ASCE, March, 1996.
  8. Arturo Tena-Colunga, Artemio Juarez-Angeles, Victor H. Salinas-Vallejo, Cyclic Behabior of Combined and Confined Masonry Walls, Engineerng Structures, 31, 2009.
  9. E. Yuksel, H. Ozkaynak, O. Buyukozturk, C. Yalcin, A. A. Dindar, M. Surmeli, D. Tasstan, Performance of alternative CFRP retrofiting schemes used in infilled RC frames, Construction and Building Materials, Elsevier, 24, 2010.
  10. G. Michele Calvi, Davide Bolognini, Andrea Penna, Seismic Performance of Masonry Infilled R.C. Frames: Benefits of Slight Reinforcements, 6th Congresso Nacional de Sismologia Engenharia Sismica, 2004.
  11. Holmes, M., Steel Frames with Brickwork and Concrte Infilling, Proc. Inst. Civ. Engrs. 19, 1961.
  12. Marwan T. Shedid, Robert G. Dryadale and Wael W. El-Dakhakhni, Behavior of Fully Grouted Reinforced Concrete Masonry Shear Walls Failing in Flexure: Experimental Results, Journal of Structural Engineering, ASCE, November, 2008.
  13. M. Paz, W. Leigh, Structural Dynamics-Theory and Computation, Kluwer Acadamic Publishers, 2001.
  14. M. Y. Kaltakci, A. Koken, H. H. Korkmaz, An experimental study on the behavior of infilled steel frames under reversed cycling loading, Iranian Journal of Science & Technology, 32(B2), 2008.
  15. Stafford Smith, B., Lateral Stiffness of Infilled Frames, J. Struct. Div, ASCE, 88(6), 1962.
  16. Stafford Smith, B., Behavior of the square infilled frame, J. Struct. Div, ASCE, 92(1), 1966.
  17. Stafford Smith, B., Method for predicting the lateral stiffness and strength of Multi-story infilled frames, Build, Sci. Pergamon Press, Oxford, U.K. 2, 1967.
  18. T. Paulay, M. J. N. Priestley, Seismic of Reinforced Concrete and Masonry Buildings, John Wiley & Sons, Inc., 1992.