DOI QR코드

DOI QR Code

Research on the Non-linear Analysis of Reinforced Concrete Walls Considering Different Macroscopic Models

거시적 모델을 다르게 고려한 철근콘크리트 벽체의 비선형 해석 연구

  • Received : 2012.04.25
  • Accepted : 2012.07.16
  • Published : 2012.10.31

Abstract

In this paper, non-linear analysis was performed for Reinforced Concrete (RC) walls using different macroscopic models subjected to cyclic loading, and the analytical results were compared with previous experimental studies of RC walls. ASCE41-06 (American Society of Civil Engineers) specifies that the hysteresis behaviors of RC walls are different due to the aspect ratio of the walls. For a comparison between analytical and experimental results, a slender wall with an aspect ratio exceeding 3.0 and a squat wall with an aspect ratio of 1.0 were selected among previous research works. For the non-linear analysis, each test specimen was modeled using two different macroscopic methods: the first representing the flexural behavior of the RC wall, and the second considering the diagonal shear in the web of the wall. Through nonlinear analysis of the considered RC walls, the analytical difference of a slender wall was negligible due to the different macroscopic modeling methods. However, the squat wall was significantly affected by the considered components of the modeling method. For an accurate performance evaluation of the RC building with squat walls, it would be reasonable to use a macroscopic model considering diagonal shear.

본 연구에서는 주기하중에 대하여 거시적 모델링 방법을 다르게 적용하여 철근콘크리트 벽체의 비선형 해석을 수행하고 기존에 나타난 실험 연구와 비교/분석하였다. ASCE41-06에서 제시하는 높이-길이 비에 따른 벽체의 파괴유형을 참고하여 기존에 수행된 실험연구 중에서 높이-길이비가 3.0을 초과하는 세장한 벽체와 높이-길이비가 1.5인 낮은 벽체를 선택하였다. 각 실험체에 대하여 거시적 모델을 다르게 고려하여 비선형 해석을 수행하였다. 본 연구에서 적용한 거시적 모델은 휨에 대한 거동을 정확히 묘사할 수 있는 방법과 벽체의 복부에서 발생되는 대각 전단을 고려할 수 있는 방법이다. 세장한 벽체는 거시적 모델에 따른 실험과 해석의 결과 차이가 거의 없는 것으로 나타났지만 낮은 벽체는 모델링 방법에서 고려할 수 있는 요소에 의해 이력 거동이 크게 달라지는 것으로 조사되었다. 또한, 높이-길이 비가 1.5인 철근콘크리트 벽체가 건축물에 적용된 경우 정확한 횡 저항능력을 평가하기 위해서 복부의 대각 압축 전단을 고려할 수 있는 모델을 사용하는 것이 타당하다.

Keywords

References

  1. Gulec C.K. and Whittaker, A.S., Performance-Based Assessment and Design of Squat Reinforced Concrete Shear Walls, Technical Report No. MCEER-09-0010, MCEER, University at Buffalo, State University of New York, 2009.
  2. Kim, T.W., Foutch, D.A., LaFave, J.M., and Wilcoski, J., Performance Assessment of Reinforced Concrete Structural Walls for Seismic Loads, Structural Research Series - No. 634, Dept. of Civil and Environmental Engineering, University of Illinois at Urbana-Chmpaign, Urbana Illinois, 2004.
  3. Vulcano, A. and Bertero, V.V., Analytical Models for Predicting the Lateral Response of RC Shear Walls: Evaluation of Their Reliablity, Report No. UCB/EERC-87/19, EERC, University of California, Berkeley, California, 1987.
  4. ASCE, Seismic Rehabilitation of Existing Buildings, ASCE/SEI 41-06, American Society of Civil Engineers, 2007.
  5. Kabeyasawa, T., Otani, S. and Aoyama, H., "Nonlinear Earthquake Response Analysis of RC Wall Frame Structure," Transactions, Japan Concrete institute, 1983.
  6. Linde, P., "Numerical Modeling and Capacity Design of Earthquake-Resistant Reinforced Concrete Walls," Report No. 200, Institute of Structural Engineering, Swiss Federal Institute of Technology (ETH), Zurich, Birkhauser, Basel, 1993.
  7. Milev, J. "Two-Dimensional Analytical Model of Reinforced Concrete Shear Walls," Proc. 11th of WCEE, Paper No. 320, 1996.
  8. Park, H.G. and Eom, T.S., "Truss Model for Nonlinear Analysis of RC Members Subjected to Cyclic Loading," Journal of Structural Engineering, Vol. 133, No. 10, 1351- 1363, 2007. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:10(1351)
  9. Computer and Structures Inc., Nonlinear Analysis and Performance Assessment for 3D Structures, Berkeley, CA, 2006.
  10. CEN Technical Committee 250/SC8, Eurocode 8: Earthquake Resistant Design of Structures - Part 1: General Rules (ENV 1998 1-1, 1-2 and 1-3), CEN, Brussels, 1995.
  11. Thomsen, J.H. and Wallace, J.W., "Displacement-Based Design of Slender Reinforced Concrete Structural Walls - Experimental Verification," Journal of Structural Engineering, ASCE, Vol. 130, No. 4, 618-630, 2004. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:4(618)
  12. Orakcal, K., Massone, L.M., and Wallace, W.J., Analytcial Modeling of Reinforced Concrete Walls for Predicting Flexural and Coupled-Shear-Flectural Response, Pacific Earthquake Engineering Research Center, University of California, 2006.
  13. Salonikios, T.N., Kappos, A.J., Tegos, I.A., and Penelis, G.G., "Cyclic Load Behavior of Low-Slenderness Reinforce Concrete Walls: Design Basis and Test Results," ACI Structural Journal, Vol. 96, No. 4, 649-660, 1999.
  14. Salonikios, T.N., Kappos, A.J., Tegos, I.A., and Penelis, G.G., "Cyclic Load Behavior of Low-Slenderness Reinforce Concrete Walls: Failure Modes, Strength Analysis, and Design Implications," ACI Structural Journal, Vol. 97, No. 1, 132-141, 2000.
  15. Mander, J.B., Priestley, M.J.N., and Park, R., "Theoretical Stress-Strain Model for Confined Concrete," Journal of Structural Engineering, ASCE, Vol. 114, No. 8, 1804-1826, 1988. https://doi.org/10.1061/(ASCE)0733-9445(1988)114:8(1804)
  16. 대한건축학회, 건축구조설계기준 - KBC 2009, 2009.
  17. Building Code Requirements for Structural Concrete and Commentary, ACI 318-08, American Concrete Institute, Detroit, Mich., 2008.
  18. 엄태성, 박홍근, "에너지소산능력에 기초한 철근콘크리트 부재의 이력모델," 한국지진공학회, 제8권, 제5호, 45-54, 2004.
  19. 김민숙, 윤소희, 이영학, 김희철, "FRP시트와 비좌굴가새를 적용한 저층 필로티 구조물의 보-기둥 연결부 거동 해석에 관한 연구," 한국지진공학회, 제13권, 제2호, 69-77, 2009.