Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
권호 표지
DOI QR코드

DOI QR Code

Seismic Performance Assessment of Existing Circular Sectional RC Bridge Columns according to Lap-splice Length of Longitudinal Bars

축방향철근의 겹침이음길이에 따른 원형 RC교각의 내진성능평가

  • 박광순 (한국시설안전공단) ;
  • 서형열 (한국시설안전공단) ;
  • 김태훈 (삼성물산(주) 건설부문 기술연구센터) ;
  • 김익현 (울산대학교 건설환경공학부) ;
  • 선창호 (울산대학교 건설환경공학부)
  • Received : 2014.03.26
  • Accepted : 2014.06.03
  • Published : 2014.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

The plastic hinge region of RC pier ensures its nonlinear behavior during strong earthquake events. It is assumed that the piers secure sufficient strength and ductility in order to prevent the collapse of the bridge during strong earthquake. However, the presence of a lap-splice of longitudinal bars in the plastic hinge region may lead to the occurrence of early bond failure in the lap-splice zone and result in significant loss of the seismic performance. The current regulations for seismic performance evaluation limit the ultimate strain and displacement ductility considering the eventual presence of lap-splice, but do not consider the lap-splice length. In this study, seismic performance test and analysis are performed according to the cross-sectional size and the lap-splice length in the case of longitudinal bars with lap-splice located in the plastic hinge region of existing RC bridge columns with circular cross-section. The seismic behavioral characteristics of the piers are also analyzed. Based upon the results, this paper presents a more reasonable seismic performance evaluation method considering the lap-splice length and the cross-sectional size of the column.

Keywords

References

  1. Priestley MJN, Seible F, Calvi GM. Seismic Design and Retrofit of Bridges. John Wiley & Sons, Inc; c1996.
  2. Ministry of Land, Transportation and Maritime Affairs. Korea Bridge Design Code. Korea Road and Transportation Association; c2010.
  3. Paulay T. Lapped Splices in Earthquake-Resisting Columns. ACI Structural Journal. 1982;79(6):458-469.
  4. Lin Y. Seismic Behavior of Bridge Pier Column Lap Splices. Ph. D. Thesis. University of Illinois; c1996.
  5. Lee DH, Chung YS, Lee JH, Song HJ. Seismic Performance Evaluation of RC Bridge Piers with Lap Splice of Longitudinal Steel in the Aspect Ratio of 4.0. KSCE J. Structural Eng. 2002;22(5-A): 187-193.
  6. Son HS, Lee JH. Ductility Relationship of RC Bridge Columns under Seismic Loading. EESK J. Earthquake Eng. 2003;7(4):51-61. https://doi.org/10.5000/EESK.2003.7.4.051
  7. Kim IH, Lee JS, Rhie YB, Kim WS, Sun CH. Behavior of Solid and Hollow Rectangular RC Piers with 50% of Lap-Spliced Longitudinal Bars. EESK J. Earthquake Eng. 2003;7(5):25-35.
  8. Kim TH, Park HY, Kim BS, Shin HM. Seismic Performance Evaluation of Reinforced Concrete Bridge Piers with Lap Splice. EESK J. Earthquake Eng. 2003;7(3):31-38. https://doi.org/10.5000/EESK.2003.7.3.031
  9. Park KS, Ju HS, Shin HM, Kim MK. Displacement Ductility Ratio of Reinforced Concrete Bridge Piers with Lap-splices. EESK J. Earthquake Eng. 2008;12(6);1-12. https://doi.org/10.5000/EESK.2008.12.6.001
  10. Lee JH, Choi YH, Park KS, Ju HS. Seismic Performance of Non-Seismic Designed Pier Wall and Retrofit Concept. EESK J. Earthquake Eng. 2009;13(6):87-98. https://doi.org/10.5000/EESK.2009.13.6.087
  11. Ministry of Construction & Transportation. A Study on the Seismic Performance Assessment and Retrofitting Measures of Existing Bridges in National Roads. Korea Infrastructure Safety & Technology Corporation; c2001.
  12. Ministry of Land, Transportation and Maritime Affairs. A Study on the Performance Assessment for Seismic Retrofit of Bridges (1st-4th). Korea Infrastructure Safety & Technology Corporation. 2006-2009.
  13. Ministry of Land, Transportation and Maritime Affairs. A Study on the Establish Measures for Seismic Retrofit of Existing Bridge in National Roads. Korea Infrastructure Safety & Technology Corporation; c2011.
  14. Ministry of Land, Transportation and Maritime Affairs. Seismic Assessment and Retrofitting Guidelines for Existing Bridges. Korea Infrastructure Safety & Technology Corporation; c2011.
  15. Korea Expressway Corporation. Guidelines for Seismic Performance Assessment of Existing Highway Bridges. Expressway & Transportation Research Institute; c2012.
  16. Ministry of Construction & Transportation. Korea Bridge Standard Specifications; c1992.
  17. Korea Infrastructure Safety & Technology Corporation. A study on the Development of displacement ductility evaluation technology according to the Cross-section Form of Reinforced Concrete Bridge Columns; c2013.
  18. Kim JK, Kim IH, Lim HW, Juhn GH. Behavior of Solid Circular RC Piers without Seismic Detailing Subjected to Cyclic Lateral Load. EESK J. Earthquake Eng. 2011;15(4):83-95.
  19. Kim IH, Sun CH, Lee SH, Park KS, Seo HY. Seismic Behavior of Circular Sectional RC Bridge Columns with Various Lap-splice Lengths-An Experimental Study. EESK J. Earthquake Eng. 2012;16(6):47-56. https://doi.org/10.5000/EESK.2012.16.6.047
  20. Shin HM, Choi JH, Kim TH, Park JG, Seong DJ. Material Models and User Manual for RCAHEST. c2008.
  21. Kim TH, Hong HK, Chung YS, Shin HM. Seismic Performance Assessment of Reinforced Concrete Bridge Columns with Lap Splices using Shaking Table Tests. Magazine of Concrete Research. 2009; 61(9):705-719. https://doi.org/10.1680/macr.2008.61.9.705
  22. Lee JH, Son HS, Ko SH. Seismic Performance of Circular RC Bridge Columns with Longitudinal Steel Connection Details. Journal of Korea Concrete Institute. 2004;16(2):249-260. https://doi.org/10.4334/JKCI.2004.16.2.249
  23. TRC/Imbsen Software. XTRACT (Cross-sectional X sTRuctural Analysis ComponenTs) Ver.3.0.8.2007.
  24. Mander SM. Procedures in Seismic Analysis and Design of Bridge Structures. Release II Draft. California Department of Transportation. Sacramento. California; c1996.