한국구조물진단유지관리공학회 논문집 (Journal of the Korea institute for structural maintenance and inspection)

  • 제22권1호
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  • Pages.13-22
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  • 2018
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  • 2234-6937(pISSN)
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  • 2287-6979(eISSN)
한국구조물진단유지관리공학회 (Korea Institute for Structural Maintenance Inspection)
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역V형 가새로 보강된 RC 골조의 내진성능평가

Seismic Performance Evaluation of Reinforced Concrete Frames Reinforced with Chevron Bracing System

  • 투고 : 2017.02.08
  • 심사 : 2017.11.09
  • 발행 : 2018.01.01
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초록

본 연구에서는 역V형 강재 가새로 보강된 기존 철근콘크리트 구조물의 내진보강 설계방법 개발을 위한 실험연구를 수행하였다. 보강되지 않은 철근콘크리트 골조 기준 실험체와 강재 가새를 사용하여 강도 및 강성을 향상시킨 보강 실험체를 제작하고 내진성능을 평가하였다. 가새 보강 실험체의 경우 강성이 약 2~3배 증가를 목표로 설계하였다. 내진성능평가 결과, 무보강 실험체는 기둥에서 많은 양의 콘크리트가 박리가 되었고, 가새 보강 실험체는 초기 설계 단계에서 목표로 한 성능수준을 보여주었다. 가새를 보강한 실험체의 경우, 무보강 실험체에 비하여 강성, 강도, 연성능력 그리고 에너지 소산 능력이 크게 향상되었다. 따라서 본 연구로부터의 실험결과를 토대로 기존 철근콘크리트 건축물의 가새 보강공법에 관한 설계법 및 설계절차 개발을 위한 기초자료로 활용하고자 한다.

In this study, seismic performance of existing RC frames reinforced with steel chevron bracing systems was experimentally evaluated. For this purpose, the unreinforced base specimen and seismically reinforced specimens with steel chevron bracing systems were fabricated and tested. Both strength and stiffness of the reinforced specimens were targeted about 2-3 times larger than the base specimen. Test results showed that the stiffness, strength, and ductility of the reinforced specimens considerably improved than those of unreinforced base specimen. Therefore, the results from this study could offer the basic information on the developing design guideline for the seismic reinforcement of RC frames.

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참고문헌

  1. ACI (2014), Building Code Requirements for Structural Concrete and Commentary, American Concrete Institute, U.S.
  2. AISC (2011), Steel Construction Manual 14th Edition, American Institute of Steel Construction, U.S.
  3. AISC (2012), Seismic Design Manual 2nd Edition, American Institute of Steel Construction, U.S.
  4. Federal Emergency Management Agency (1998), Handbook for the seismic evaluation of buildings-A prestandard, American Society of Civil Engineers (ASCE).
  5. KBC (2016), Korean Building Code-Structural, Architectural Institute of Korea, Korea (in Korean).
  6. Kim, C., Yu, E., and Kim, M. (2016), Finite Element Analysis of Reinforced Concrete Masonry Infilled Frame with Different Masonry Wall Thickness Subjected to In-plane Loading, J. Comput. Struct. Eng. Inst., Computational Structural Engineering Institute of Korea (COSEIK), 29(1), 85-93 (in Korean).
  7. Kim, M. S., Choi, H., Song, S. E., and Lee, Y. H. (2013), Seismic Capacity of Reinforced Concrete Frames Retrofitted with H-beam Frame, J. of the Earthq. Eng. Soc. of Korea, EESK, 17(3), 127-132 (in Korean). https://doi.org/10.5000/EESK.2013.17.3.127
  8. Korea Infrastructure Safety Corporation, KITEC (2011), Guidelines for Seismic Retrofit of Existing Buildings.
  9. Korean Educational Development Institute, KEDI (2011), Guidelines for Seismic Performance Evaluation and Seismic Retrofit of School Buildings.
  10. KS (2007), Test Pieces for Tensile Test for Metallic Materials, KS B 0801, Korean Standard Institute, Korea (in Korean).
  11. KS (2010), Standard Test Method for Compressive Strength of Concrete, KS F 2405, Korean Standard Institute, Korea (in Korean).
  12. KS (2014), Standard Test Method for Making and Curing Concrete Specimens, KS F 2403, Korean Standard Institute, Korea (in Korean).
  13. Lee, C. H. (2008), Seismic Design of Steel Buildings per Capacity Design Concept, J. of Arch. Inst. of Korea, AIK, 52(10), 32-37 (in Korean).
  14. Lee, K. S. (2015), Seismic Performance Evaluation of Medium-and Low-rise R/C Buildings Strengthened with RCSF External Connection Method by Pseudo Dynamic Test, J. of Korea Ins. for Stuct. Maint. and Insp., KSMI, 19(1), 13-22 (in Korean).
  15. Lee, K. S. (2016), Quick Investigation and Seismic Capacity of RC School Buildings Damaged by Kyongju Eq., Proceeding of AIK Int. Symposium, AIK, 10-11 (in Korean).
  16. MIDAS Gen (2017). Analysis & Design, Midas IT.
  17. Ministry of Public Administration and Security (2008), Earthquake Recovery Plans Act.
  18. Oh, K., So, J., Ha, H. J., and Lee, K. (2016), Seismic Performance Evaluation of RC Frames Reinforced by Chevron Bracing System, Proceeding of Korea Inst. for Struc. Maint. and Insp., KSMI, 255-256 (in Korean).
  19. Ozcelik, R. (2011), Seismic Upgrading of Reinforced Concrete Frames with Structural Steel Elements, Ph. D. dissertation, Middle East Technical Univ., Turkey.
  20. TahamouliRoudsari, M., Entezari, A., Hadidi, M., and Gandomian, O. (2017), Experimental Assessment of Retrofitted RC Frames With Different Steel Braces, Structures 11, 206-217. https://doi.org/10.1016/j.istruc.2017.06.003
  21. Thomas Paulay, M. J. N. Priestley (1992), Seismic Design of Reinforced Concrete and Mansory Building, Wiley-Interscience.
  22. Yu, E., Kim, Y. J., Kim, T. J., Kim, S. J., and Ahn, C. W. (2011), Seismic evaluation of 4 story RC building, Proceeding of Falling Workshop the Earthq. Eng. Soc. of Korea, EESK, 1217-1247 (in Korean).