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Safety of Ductility Demand Based Seismic Design for Circular RC Bridge Columns

원형 철근콘크리트 교각에 대한 연성도 내진설계법의 안전성

  • Published : 2008.04.30

Abstract

Seismic design for bridge columns of the current Korea Highway Bridge Design Specifications which adopt full ductility design concept results in reinforcement congestion problems in construction site. It is due to large amount of confining steel is required even for small ductility demand which is a normal case in low and moderate seismicity regions like Korean peninsular. Therefore a new seismic design method based on limited ductility concept was proposed, which is called ductility demand based design method. It uses the new confining steel design equation considering ductility demand and aspect ratio of the column as well as material strength. The purpose of this study is to verify safety of the ductility demand based design method by the confining steel design equation. Eighty nine circular column test results are selected and investigated in terms of ductility factor and its safety. The safety factor for the circular column test results ranges between 1.11 and 3.98, and the average is 1.90. In this paper, the basic concept and detailed design procedure of the ductility demand based design method are also introduced as well as the investigation of the safety with respect to the major variables in confining steel design.

References

  1. 한국도로교통협회, 도로교설계기준, 건설교통부, 2005, 498pp
  2. AASHTO, 17th Ed, American Association of State Highway and Transportation Officials, USA, 2002, 472pp
  3. 정영수, 박창규, 이은희, "지진을 경험한 형상비 2.5 RC 교각의 내진 변위 연성도 평가", 한국지진공학회 논문집, Jun. 2003, pp.79-88
  4. 이재훈, 배성용, 이형준, "나선절근교각의 내진성능실험", 대한토목학회 논문집, 21권 1-A호, 2001, pp.719-728
  5. 김재관, 김익현, "Seismic Design in Low or Moderate Seismicity Regions: Suggested Approaches", 한국지진공학회 논문집, 2권 3호, 1999, pp.99-109
  6. 박종협, 조창백, 박희상, 정영수, "중.약진지역의 원형 내진 RC교각의 내진성능평가", 한국콘크리트학회, 봄 학 술발표회 논문집, 12권, 1호, 2000, pp.452-457
  7. 손혁수, 이재훈, "지진하중을 받는 철근콘크리트 교각의 연성도 상관관계", 한국지진공학회논문집, 7권 4호, 2003, pp.51-61
  8. 손혁수, 이재훈, "지진하중을 받는 철근콘크리트 교각의 소요연성도에 따른 심부구속철근량", 콘크리트학회 논문집, 15권 5호, 2003, pp.715-725
  9. 이재훈, 손혁수, 고성현, 최진호, "철근콘크리트 교각의 연성요구량에 따른 내진설계", 한국지진공학회, 추계학술 발표회, 호서대학교, 6권 2호, 2002, pp.316-321
  10. 이재훈, 손혁수, 고성현, "균일 안전성 확보를 위한 철근콘 크리트 교각의 연성도 내진설계", 한국지진공학회 워크숍, 한국전력공사 전력연구원, Sep. 2004, pp.312-326
  11. 이재훈, 김익현 외 11명, 콘크리트 교각의 성능기반 설 계기술 개발, 1-24과제 3차년도 보고서, 교량설계핵심기 술연구단 (KBRC), Dec. 2006
  12. ATC/MCEER, Recommended LRFD Guidelines for the Seismic Design of Highway Bridges, ATC Report ATC-49a and MCEER Technical Report MCEER-02- SP01, Nov. 2001., pp.7-2
  13. 이재훈, 배성용, 윤석구, "나선철근교각의 내진성능실험", 대한토목학회 논문집, 21권, 1-A호, 2001, pp.109-121
  14. 이재훈, 김광수, 배성용, 윤석구, "고강도콘크리트 나선 철근교각의 내진거동특성", 대한토목학회 논문집, 21권, 5-A호, 2001, pp.707-718
  15. 이재훈, 석상근, 윤석구, "원형띠철근 교각의 내진성능에 관한 실험적 연구", 대한토목학회 논문집, 22권, 1-A호, 2002, pp.159-170
  16. 이재훈, 김광수, 배성용, "지진하중에 대한 고강도콘크 리트 나선철근교각의 한정연성거동" 대한토목학회 논문집, 23권, 3A호, 2003, pp.385-395
  17. 이재훈, 정철호, 고성현, 손혁수., "반복횡하중을 받는 철 근콘크리트 원형 교각의 축방향철근 연결상세에 따른 강 도저감 및 괴거동", 콘크리트학회 논문집, 16권 1호, 2004, pp.111-124
  18. 정영수, 이강균, 한기훈, 이대형, "유리섬유 보강 원형 철 근콘크리트 교각의 내진성능에 관한 준정적 실험연구", 대한콘크리트학회 논문집, Oct. 1999, pp.107-118
  19. 권순홍, 철근콘크리트 교각의 연성거동에 관한 실험적 연구, 영남대학교 석사학위논문, 2005, pp.50-78
  20. Chung, Young-Soo, Park, Chang-Kyu, and Lee, Eun-Hee, "Seismic Performance and Damage Assessment of Reinforced Concrete Bridge Piers with Lap-Spliced Longitudinal Steels", Structural Engineering and Mechanics, Vol.17, No.1, 2004, pp.99-112 https://doi.org/10.12989/sem.2004.17.1.099
  21. 정영수, 이재훈, 김재관 등, 고속도로 기존교량의 유형별 내진성능 평가를 위한 실험적 연구, 한국도로공사, 2001, pp.61-638
  22. 박진영, 정영수, 박창규, 김영섭, 이대형, "철근 콘크리 트 교각의 주철근 이음방법에 따른 내진성능 평가", 한 국콘크리트학회, 가을 학술발표회 논문집, 14권 2호. 2002, pp.323-328
  23. Petrovski, Jakim and Ristic, Danilo, Reversed Cyclic Loading Test of Bridge Column Models, Report ZZ 84-164, Institute of Earthquake Engineering and Engineering Seismology, September 1984, 62pp
  24. Lim, Kuang Y., McLean, David I., and Henley, Edward H., Moment-Reducing Hinge Details for the Bases of Bridge Columns, Transportation Research Record, No.1275, Transportation Research Board, Washington, D.C., 1991, 11pp
  25. McLean, David L. and Lim, Kuang Y., Mormant-Reducing Hinge Details for the Bases of Bridge Columns, Report No.WA-RD 220.1, Washington State Department of Transportation, Planning, Research and Public Transportation Division, Oct. 1990, 36pp
  26. Lim, K. Y. and McLean, D. I., "Scale Model Studies of Moment-Reducing Hinge Details in Bridge Columns", ACI Structural Journal, Vol.88, No.4, 1991, pp.465-474
  27. Stone, William C. and Cheok, Geraldine S., Inelastic Behavior of Full-Scale Bridge Columns Subjected to Cyclic Loading, NIST BSS 166, Building Science Series, Center for Building Technology, National Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland, 20899, Jan. 1989, 252pp
  28. Cheok, G. S. and Stone, William C., Behavior of 1/6-Scale Model Bridge Columns Subjected to Cycle Inelastic Loading, NBSIR 86-3494, Center for Building Technology, National Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland, 20899, Nov. 1986, 291pp
  29. Sritharan, S. Priestley, M. J. N., and Seible F., Seismic Response of Column/Cap Beam Tee Connections with Cap Beam Prestressing, University of California, San Diego, Structural Systems Research Project, Report No.SSRP-96/ 09, Dec. 1996
  30. Kunnath, Sashi, K. El-Bahy, Ashraf Taylor, Andrew, and Stone, William, Cumulative Seismic Damage of Reinforced Concrete Bridge Piers, Technical Report NCEER-97-0006, National Center for Earthquake Engineering Research, Sep. 1997, 147pp
  31. Kunnath, Sashi, K. El-Bahy, Ashraf Taylor, Andrew, and Stone, William, Cumulative Seismic Damage of Reinforced Concrete Bridge Piers, Technical Report NCEER-97-0006, National Center for Earthquake Engineering Research, Sep. 1997, 147pp

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