한국강구조학회 논문집 (Journal of Korean Society of Steel Construction)

한국강구조학회 (Korean Society of Steel Construction)
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지진에 대비한 기초분리 교량의 설계법에 관한 연구(II)

A Study of Seismic Resistant Design for Base-Isolated Bridges(II)

  • 투고 : 1997.11.07
  • 발행 : 1997.12.30
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초록

제1편에서 언급한 바와 같이 기초분리 장치의 사용은 지진의 위험으로부터 구조물의 안전을 유지시키고, 지진 응답 감소에 필요한 비선형 거동은 교체가 용이한 분리장치에 국한 함으로써 구조물의 중요 부재들은 탄성 거동을 확보할 수 있다. 본 연구는 강재 Damper를 사용한 교량의 지진 응답에 대하여 연구하였다. 강재 Damper의 특성에 따른 응답을 분리 장치의 매개 변수 영향 별로 분리하여 검토 함으로써 지진시 거동을 파악하고, 적정한 분리 장치를 선정 할 수 있는 기준과 단순화된 설계 방법을 제시하였다. 제시된 시방서 형식의 설계 방법은 비선형 스펙트럼에 의한 모드 해석법으로, 관성력 또는 기초 분리 장치를 포함한 연결부 및 하부 구조의 높이별 설계력을 비교적 정확하게 평가될 수 있다. 따라서 제시된 설계 방법은 기초 분리된 교량의 기본 또는 최종 설계용으로 사용될 수 있을 것이다. 또한, 설계 방법의 타당성 검증을 위해 bilinear 이력의 강재 Damper를 사용한 P.C 교량에 대해 인공 지진파를 이용한 비선형 시간 이력 해석과 설계 응답 스펙트럼에 의한 탄성 수치 해석을 수행하여 단순 설계 방법과 비교 검토하였다.

As stated in Part(I), the use of the isolator is meant to protect a structure from seismic risk, by concentrating the inelastic deformations to relatively cheap and replaceable devices while the rest of the structures remains elastic. This research has been carried out to investigate the effects of various structural parameters and isolator characteristics on the seismic response of Base Isolated Bridges. Simplified analysis method for practical design is developed by using the results. The Proposed Code-Type approach method can be used to estimate the inertial forces accurately, not only at the isolator but throughout the height of the Base-Isolated Bridges. The proposed method is recommended to use in preliminary design tool or even a final design tool for Base Isolated Bridges. For the validation of simplified design method, examples with artificial earthquake time history and design response spectrum for P.C Box Bridge with bilinear hysteretic steel damper are evaluated.

키워드

참고문헌

  1. Int. J. Earthq. Eng. Struct. Dyn. v.9 no.5 A Response Spectrum Method for Random Vibration and Analysis of MDF Systems A. Der Kiureghian
  2. Proceeding of a Seminar and Workshop on Base Isolation and Passive Energy Dissipation A Comparative Evaluation of Passive Seismic Isolation Schemes Hadjian, A.H.;Tseng, W.S.
  3. Simple Numerical Algorithms for the Mode Superposition Analysis of Linear Structural Systems with Non-Propotional Damping Ibrahimbegovic, A.;Wilson, E.L.
  4. Int. J. Earthq. Engng. Struct. Dyn. v.1 Earthquake Resistance of Buildings with a Soft First Storey Chopra, A.K.;Clough, D.P.;Clough, R.W.
  5. Dynamics of structures Chopra, Anil K.
  6. ATC-6, Seismic Design Guidelines for High way Bridges
  7. ATC-6-1;Proceedings of a Workshop on Earthquake Resistance of Highway Bridges
  8. ATC-6-2;Seismic Refrofitting Guidelines for Highway Bridges
  9. ATC-10;Proceedings of a Workshop on Earthquake Resistance of Highway Bridges
  10. ATC-17;Proceedngs of a Seminar and Work shop on Base Isolation and Passive Energy Dissipation
  11. ATC-17-1;Proceedngs of a Seminar on Base Isolation, Passive Energy Dissipation and Active control
  12. Tentative Seismic Isolation Design Requirements Base Isolation Subcmt. of the Seismology Committee, Struct. Eng. Assoc. of Northern Calif.
  13. Numerical Techniques for the Evaluation of Soil-Structure Interaction Effects in the Time Domain;Report No.UCB/EERC-83/04 Bayo, E.;Wilson, E.L.
  14. Proceedings, 34th Annual Convention of the Struct. Eng. Association of Calif, Coronado A Study of the Earthquake Response of Inelastic Systems Berg, Glen. V.
  15. Introduction to Structural Dynamics Biggs, J.M.
  16. Parameter Studies for Seismic Design of Bridges;Part 2: Seismic Design of Brid ges Incorporating Mechanical Energy Dissipating Devices, RRU Bulletin 43 Blakeley, R.W.G.;Park, R.(ed.);Blakeley, R.W.G.(ed.)
  17. Journal of Applied Mechanics v.27 no.4 Sinusoidal Excitaion of a system with Bilinear Hysteresis Caughey, T.K.
  18. Damping Models for Inelastic Structures;Me Project Report Chrisp, D.J.
  19. Use of Energy as A Design Criterion in Earthquake-Resistant Design;Report No. UCB/EERC-88/ 18 Chia-Ming Uang;Bertero, Vitelmo V.
  20. Earthquake Resistance Design for Engineers and Architects Dowrick, D.J.
  21. Eng. Struct. v.19 no.3 Floor Response Spectra for Base-Isolated Multistorey Structures Fan, F.G.;Ahmadi, G.
  22. Procedures and Criteria for Earthquake Resistant Design, Building Practice for Disaster Mitigation, Building Science Series 46 Newmark, N.M.;Hall, W.J.
  23. Computer & Structures v.1 Dynamic analysis of Large Structures by Modal Synthesis Techniques Hurty, W.C.;Collins, J,D.;Hart, G,C.