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Earthquake risk assessment of seismically isolated extradosed bridges with lead rubber bearings

  • Kim, Dookie (Department of Civil and Environmental Engineering, Kunsan National University) ;
  • Yi, Jin-Hak (Coastal Engineering Research Department, Korea Ocean Research and Development Institute) ;
  • Seo, Hyeong-Yeol (Department of Civil and Environmental Engineering, Kunsan National University) ;
  • Chang, Chunho (Department of Civil Engineering, Keimyung University)
  • 투고 : 2007.05.10
  • 심사 : 2008.06.24
  • 발행 : 2008.08.20

초록

This study presents a method to evaluate the seismic risk of an extradosed bridge with seismic isolators of lead rubber bearings (LRBs), and also to show the effectiveness of the LRB isolators on the extradosed bridge, which is one of the relatively flexible and lightly damped structures in terms of seismic risk. Initially, the seismic vulnerability of a structure is evaluated, and then the seismic hazard of a specific site is rated using an earthquake data set and seismic hazard maps in Korea. Then, the seismic risk of the structure is assessed. The nonlinear seismic analyses are carried out to consider plastic deformation of bridge columns and the nonlinear characteristics of soil foundation. To describe the nonlinear behaviour of a column, the ductility demand is adopted, and the moment-curvature relation of a column is assumed to be bilinear hysteretic. The fragility curves are represented as a log-normal distribution function for column damage, movement of superstructure, and cable yielding. And the seismic hazard at a specific site is estimated using the available seismic hazard maps. The results show that in seismically-isolated extradosed bridges under earthquakes, the effectiveness of the isolators is much more noticeable in the columns than the cables and girders.

키워드

참고문헌

  1. AASHTO (1999), Guide Specifications for Seismic Isolation Design, 2nd Edition
  2. Ali, H.M. and Abdel-Ghaffar, A.M. (1995), "Seismic passive control of cable-stayed bridges", Shock Vib., 2(4), 259-272 https://doi.org/10.1155/1995/918721
  3. Ang, A.H.S. and Tang, W.H. (1975), Probability Concepts in Engineering Planning and Design, John Wiley & Sons
  4. Computer and Structures, Inc. (2002), SAP2000/Nonlinear Users Manual Version 8, Berkeley, CA, USA
  5. Chung, Y.S., Park, C.K. and Lee, D.H. (2006), "Seismic performance of RC bridge piers subjected to moderate earthquakes", Struct. Eng. Mech., 24(4), 429-446 https://doi.org/10.12989/sem.2006.24.4.429
  6. Dutta, A. and Mander, J.B. (1998), "Seismic fragility analysis of highway bridges", in Proc. of INCEDEMCEER Center-to-Center Workshop on Earthquake Engineering Frontiers in Transportation Systems, Tokyo, Japan, 311-25
  7. Earthquake Engineering Society of Korea (1997), Earthquake Resistant Design Standard Research (II), Ministry of Construction & Transportation
  8. Elnashai, A.S. (2001), "Advanced inelastic static (pushover) analysis for earthquake applications", Struct. Eng. Mech., 12(1), 51-69 https://doi.org/10.12989/sem.2001.12.1.051
  9. Farzad Naeim and James M. Kelly (1999), Design of Seismic Isolated Structures from Theory to Practice, John Wiley & Sons
  10. Ghobarah, A. and Ali, N.M. (1988), "Seismic performance of highway bridges", Eng. Struct., 10, 157-166 https://doi.org/10.1016/0141-0296(88)90002-8
  11. Ghobarah, A., Aly, N.M. and El-Attar, M. (1997), "Performance level criteria and evaluation", Proc. of the International Workshop on Seismic Design Methodologies for the next Generation of Codes, Balkema, Rotterdam, 207-215
  12. HAZUS (1997), "Earthquake loss estimation methodology", Technical Manual. Prepared by National Institute of Building Science for Federal Emergency Management Agency
  13. Idriss, I.M. and Sun, J.I. (1992), User's Manual for SHAKE91, Center for Geotechnical Modeling, Department of civil and Environmental Engineering, University of California
  14. Jacob, K.H. (1992), "Seismic hazards in the eastern U.S. and the impact on transportation lifelines", Lifeline Earthquake Engineering in the Central and Eastern U.S., Monograph 5, ASCE, NY USA
  15. Karim, Kazi, R. and Yamazaki, Fumio (2001), "Effect of earthquake ground motions on fragility curves of highway bridge piers based on numerical simulation", Earthq. Eng. Struct. Dyn., 30, 1839-1856 https://doi.org/10.1002/eqe.97
  16. Kennedy, R.P. and Ravindra, M.K. (1984), "Seismic fragilities for nuclear power plant risk studies", Nuclear Eng. D., 79, 47-68 https://doi.org/10.1016/0029-5493(84)90188-2
  17. Kim, D.K. (2003), "Seismic isolated of structures", Technical Articles at Korea Institute for Structural Maintenance Inspection, 7(4), 40-46
  18. Kim, D.K., Seo, H.Y., Kim, S.H. and Yi, J.H. (2005), "Seismic fragility curves of extradosed bridges with lead rubber bearings", Korean Soc. Civil Eng., 25(2A), 429-435
  19. Kim, S.H. and Shinozuka, M. (2004), "Development of fragility curves of bridges retrofitted by column jacketing", Probabilistic Eng. Mech., 19(1/2), 105-112 https://doi.org/10.1016/j.probengmech.2003.11.009
  20. Korean Society of Civil Engineers (2005), Korea Bridges Design Code, Ministry of Construction & Transportation
  21. Priestley, M.J.N., Seible, F. and Calvi, G.M. (1996), Seismic Design and Retrofit of Bridges, John Wiley & Sons, Inc, 270-273
  22. Rechart, F.E., Woods, R.D. and Hall, J.R. (1970), Vibrations of Soils and Foundations, Prentice-Hall
  23. Shinozuka, M., Feng, M.Q., Kim, H.K. and Ueda, T. (2002), "Statistical analysis of fragility curves", Technical Report at Multidisciplinary Center for Earthquake Engineering Research, NY, USA
  24. Shinozuka, M., Feng, M.Q., Lee, J. and Naganuma, T. (2000), "Statistical analysis of fragility curves", J. Eng. Mech., ASCE, 126(12), 122-1231
  25. Shinozuka, M., Hwang, H. and Reich, M. (1984), "Reliability assessment of reinforced concrete containment structures", J. Eng. D., 80, 247-267
  26. Su, R.K.L., Chandler, A.M., Li, J.H. and Lam, N.T.K. (2002), "Seismic assessment of transfer plate high rise buildings", Struct. Eng. Mech., 14(3), 287-306 https://doi.org/10.12989/sem.2002.14.3.287
  27. UCFyber Users Manual (2001), Imbsen & Associates, Inc., Berkeley, CA, USA
  28. Vanmarcke, E.H. and Gasparini, D.A. (1976), "A program for artificial motion generation, user's manual and documentation", Department of Civil Engineering, MIT
  29. Yun, C.B., Choi, J.S. and Kim, J.M. (1999), "Identification of the Hualien soil-structure interaction system", Soil Dyn. Earthq. Eng., 18, 395-408 https://doi.org/10.1016/S0267-7261(99)00016-0

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