KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
권호 표지
DOI QR코드

DOI QR Code

Seismic Performance Evaluation of Recentering Braced Frame Structures Using Superelastic Shape Memory Alloys - Nonlinear Dynamic Analysis

초탄성 형상기억합금을 활용한 자동복원 가새 프레임 구조물의 내진성능 평가 - 비선형 동적해석

  • 반우현 (인천대학교 건설환경공학과) ;
  • 허종완 (인천대학교 도시환경공학부) ;
  • 주영훈 (인천대학교 건설환경공학과)
  • Received : 2020.03.31
  • Accepted : 2020.04.29
  • Published : 2020.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

Korea was recognized as a relatively safe area for earthquake. However, due to considerable damage to facilities caused by the earthquake in Gyeongju and Pohang, interest in the maintenance and repair of structures is increasing. So interest in vibration damping technology applicable to existing structures is also increasing. However, vibration damping technology has a problem in that its usability is reduced due to damage of the damping device when a strong earthquake occurs. Recently, in order to solve such a problem, study is being conducted to apply a superelastic shape memory alloys (SSMA) capable of recentering bracing. Therefore, in this study, nonlinear dynamic analysis is performed to evaluate the seismic performance of the buckling-restrained braced frame (BRBF) applied SSMA to bracing.

우리나라는 비교적 지진에 대해 안전한 지역으로 인식되고 있었다. 그러나 최근 경주와 포항에서 발생한 지진으로 인한 시설물에 상당한 피해가 발생함에 따라 이미 건축된 구조물의 유지, 보수에 관한 관심이 높아지고 있다. 따라서 기존 구조물에 적용 가능한 제진기술에 대한 관심 또한 높아지고 있다. 그러나 제진기술은 강한 지반 운동으로 인한 장치의 손상으로 인하여 성능 저하의 문제점이 있다. 최근 이러한 문제를 해결하기 위해, 가새 부재에 응력을 제거함으로써 자동복원이 가능한 초탄성 형상기억합금을 적용하는 연구가 이뤄지고 있다. 따라서 본 연구에서는 초탄성 형상기억합금을 적용한 비좌굴 가새 부재를 활용하여 자동복원 프레임 구조물을 구성하고 비선형 동적 해석을 통하여 초탄성 형상기억합금의 재료적 우수성과 구조물의 내진성능을 평가 및 검증하였다.

Keywords

References

  1. Alam, M. S., Moni, M. and Tesfanaruan, S. (2012). "Seismic overstrength and ductility of concrete buildings reinforced with superelastic shape memory alloy rebar." Journal of Engineering Structures, Vol. 34, pp. 8-20. https://doi.org/10.1016/j.engstruct.2011.08.030
  2. American Institute of Steel Construction (AISC) (2001). Manual of steel construction, load and resistance factor design (LRFD), 3rd Ed., Chicago, Illinois, United States of America.
  3. American Society of Civil Engineers (ASCE) (2006). Minimum design loads for buildings and other structures, ASCE/SEI Standard 7-05, Reston, Virginia, United States of America.
  4. Ban, W. H. (2020). Seismic performance evaluation of recentering braced frame structures using superelastic shape memory alloys, M.Sc. Thesis, Incheon National University (in Korean).
  5. Ban, W. H. and Hu, J. W. (2020). "Seismic performance evaluation of recentering braced frame structures using superelastic shape memory alloys: Nonlinear static analysis." Journal of Korean Society for Advanced Composite Structures, Vol. 11, No. 2, pp. 7-14 (in Korean). https://doi.org/10.11004/kosacs.2020.11.2.007
  6. DesRoches, R., McCormick, J. and Delemont, M. (2004). "Cyclic properties of superelastic shape memory alloy wires and bars." Journal of Structural Engineering, Vol. 130, No. 1, pp. 38-46. https://doi.org/10.1061/(asce)0733-9445(2004)130:1(38)
  7. Hu, J. W. (2013). "Seismic behavior and performance evaluation of uckling-restrained braced frames (BRBFs) using superelastic shape memory a lloy (SMA) bracing systems." Journal of the Korean Society of Civil Engineers, KSCE, Vol. 33, No. 3, pp. 875-888 (in Korean). https://doi.org/10.12652/Ksce.2013.33.3.875
  8. Hu, J. W., Choi., D. H. and Kim, D. K. (2012). "Inelastic behavior of smart recentering buckling restrained braced frames with superelastic shape memory alloy bracing systems." Journal of Mechanical Engineering Science, Vol. 227, No. 4, pp. 806-818.
  9. Hu, J. W. and Park, J. W. (2014). "Optimum design and structural application of the bracing damper system by utilizing friction energy dissipation and self-centering capability." Journal of The Korean Society of Civil Engineers, KSCE, Vol. 34, No. 2, pp. 377-387 (in Korean). https://doi.org/10.12652/Ksce.2014.34.2.0377
  10. Kersting, R. A., Fahnestock, L. A. and Lopez W. A. (2015). NEHRP seismic design technical brief no. 11 - seismic design of steel buckling-restrained braced frames: A guide for practicing engineers, Journal of Research of the National Institute of Standards and Technology, Report No. 15-917-34 (in Korean).
  11. McCormick, J., DesRoches, R., Fugazza, D. and Auricchio, F. (2007). "Seismic assessment of concentrically braced steel frames with shape memory alloy braces." Journal of Structural Engineering, Vol. 133, No. 6, pp. 862-870. https://doi.org/10.1061/(asce)0733-9445(2007)133:6(862)
  12. Open System for Earthquake Engineering Simulation (2009). OpenSees 2.1.0, Pacific Earthquake Engineering Research Center (PEER), University of California, Berkeley, United States of America, Available: https://opensees.berkeley.edu (Accessed: February 15, 2020).
  13. OSHPD Seismic Design Maps (2019). Structural engineers association of california (SEOAC), Sacramento, United States of America, Available: https://seismicmaps.org (Accessed: February 15, 2020).
  14. Program for Seismic Response Analysis of Single-Degree-of-Freedom Systems (2010). PRISM 2.0.1, Department of Architectural Engineering, INHA University, Republic of Korea.
  15. Yeon, Y. M., Hong, K. N. and Shim, W. B. (2020), "Long-term behavior of reinforced concrete beams strengthened with near-surface mounted fe-based shape memory alloy strips." Journal of the Korean Society for Advanced Composite Structures, Vol. 11, No. 1, pp. 11-17 (in Korean). https://doi.org/10.11004/kosacs.2020.11.1.011