Earthquakes and Structures

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Earthquake performance of the two approach viaducts of the bosphorus suspension bridge

  • Bas, Selcuk (Department of Civil Engineering, Engineering Faculty, Bartin University) ;
  • Apaydin, Nurdan Memisoglu (Department of Structures, General Directorate of Turkish State Highways) ;
  • Celep, Zekai (Department of Structural and Earthquake Engineering, Faculty of Civil Engineering, Istanbul Technical University)
  • Received : 2015.09.01
  • Accepted : 2016.08.13
  • Published : 2016.09.25
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Abstract

The main purpose of this paper is to determine the dynamic characteristics and the structural stability of the two approach viaducts of the Bosphorus Suspension Bridge under the expected stresses that would be caused during earthquake conditions. The Ortakoy and the Beylerbeyi approach viaducts constitute the side spans of the bridge at two locations. The bridge's main span over the Bosphorus is suspended, whereas they are supported at the base at either end. For the numerical investigation of the viaducts, 3-D computational structural finite element-FE models were developed. Their natural frequencies and the corresponding mode shapes were obtained, analyzed, presented and compared. The performances of the viaducts, under earthquake conditions, were studied considering the P-Delta effects implementing the push-over (POA) and the non-linear time-history analyses (NTHA). For the NTHA, three earthquake ground motions were generated depending on the location of the bridge. Seismic performances of the viaducts were determined in accordance with the requirements of the Turkish Seismic Code for the Earthquake Design of Railways Bridges (TSC-R/2008) and those of Caltrans (CALTRANS-2001) given for Seismic Design of Steel Bridges, separately. Furthermore, the investigation was extended for evaluating the possible need for retrofitting in the future. After the analysis of the resultant data, a retrofit recommendation for the viaducts was presented.

Keywords

References

  1. AASTHO/NSBA Steel Bridge Collaboration, G12.1 (2003), Guidelines for design for constructability, AASTHO Publication No: GDC-2, Washington, DC.
  2. Abrahamson, N.A. (1992), "Non-stationary spectral matching", Seismol. Res. Lett., 63(1), 30.
  3. American Association of State Highway and Transportation Officials, AASHTO (2007), LRFD Bridge design specifications, SI Units, 4th Ed., Washington, DC.
  4. Apaydin, M.N. (2002), "Seismic analysis of fatih sultan mehmet suspension bridge", Ph.D. Dissertation, Department of Earthquake Engineering, Bogazici University, Istanbul, Turkey.
  5. Apaydin, M.N. (2010), "Earthquake performance assessment and retrofit investigations of two suspension bridges in Istanbul", Soil Dyn. Earthq. Eng., 30(8), 702-710. https://doi.org/10.1016/j.soildyn.2010.02.011
  6. ATC (1996), Seismic evaluation and retrofit of concrete buildings, Technical Report (ATC-40), Redwood City, California.
  7. Aviram, A., Mackie, K.R. and Stojadinovic, B. (2008), Guidelines for non-linear analysis of bridge structures in California, Technical Report PEER, No: 03.
  8. Aydinoglu, M.N. (2003), "An incremental response spectrum analysis procedure based on inelastic spectral deformation for multi-mode seismic performance evaluation", Bull. Earthq. Eng., 1(1), 3-36. https://doi.org/10.1023/A:1024853326383
  9. Aydinoglu, M.N. and Onem, G. (2007), "Non-Linear performance assessment of bridges with incremental response spectrum analysis (IRSA)", ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering; Rethymno, Greece.
  10. Barron, R. (1999), "Spectral evaluation of seismic fragility of structures", Ph.D. Dissertation, Department of Civil, Structural and Environmental Engineering, State University of New York at Buffalo, Buffalo.
  11. Bas, S. (2011), "Dynamic analysis and earthquake performance evaluation of two approach viaducts of Bosphorus Suspension Bridge", MSc. Thesis, Department of Structural and Earthquake Engineering, Istanbul Technical University, Istanbul.
  12. CALTRANS (2001), Guide specifications for seismic design of steel bridges, 1st Ed., Department of Transportation, State of California.
  13. Casarotti, C. and Pinho, R. (2007), "An adaptive capacity spectrum method for assessment of bridges subjected to earthquake action", Bull. Earthq. Eng., 5(2), 134-148.
  14. Casarotti, C., Monteiro, R. and Pinho, R. (2009), "Verification of spectral reduction factors for seismic assessment of bridges", Bull. NZ. Soc. Earthq. Eng., 42(2), 111-112.
  15. Chopra, A. (2007), Dynamics of Structures: Theory and Applications to Earthquake Engineering, Pearson Prentice Hall, Upper Saddle River, N.J.
  16. Chopra, A.K. and Goel, R.K. (2000), "Evaluation of NSP to estimate seismic deformation: SDF systems", J. Struct. Eng., 126(4), 482-490. https://doi.org/10.1061/(ASCE)0733-9445(2000)126:4(482)
  17. Chopra, A.K. and Goel, R.K. (2001), "A modal push-over analysis procedure for estimating seismic demands for buildings: Theory and Preliminary Evaluation", PEER Report, University of California, Berkeley.
  18. CSI (2011), Integrated structural finite element analysis and design of structures (SAP2000), Berkeley, CA.
  19. Eurocode 8 (EC8) (2005), EN 1998-2, Design provisions for earthquake resistance of structures-Part 2: Bridges, CEN, Brussels.
  20. FEMA (2000), FEMA-356, Prestandard and commentary for the seismic rehabilitation of buildings, Technical Report Washington DC.
  21. Freeman, Fox and Partners (1968), Bosporus Bridge Approach Viaducts Drawings, Westminster, London, SW.1.
  22. Freeman, S.A., Nicoletti, J.P. and Tyrell, J.V. (1975), "Evaluations of existing buildings for seismic risk - a case study of puget sound naval shipyard, Bremerton, Washington", Proceedings of U.S. National Conference on Earthquake Engineering, Berkeley.
  23. General Directorate of Highways (1982), Technical specifications for highway bridges, Ankara, Turkey.
  24. Hancock, J., Watson-Lamprey, J., Abrahamson, N.A., Bommer, J.J., Markatis, A., McCoy, E. and Mendis, R. (2006), "An improved method of matching response spectra of recorded earthquake ground motion using wavelet", J. Earthq. Eng., 10(1), 67-89.
  25. Isakovic, T. and Fischinger, M. (2011), "Applicability of push-over methods to the seismic analyses of an RC bridge, experimentally tested on three shake tables", J. Earthq. Eng., 15(2), 303-320. https://doi.org/10.1080/13632461003802009
  26. Isakovic, T., Pompeyo Lazaro, M.N. and Fischinger, M. (2008), "Applicability of pushover methods for the seismic analysis of single-column bent viaducts", Earthq. Eng. Struct. Dyn., 37(8), 1185-1202. https://doi.org/10.1002/eqe.813
  27. Kappos, A.J., Saiidi, M.S., Aydinoglu, M.N. and Isakovic, T. (2012), Seismic Design and Assessment of Bridges-Inelastic Methods of Analysis and Case Studies, Series: Geotechnical, Geological and Earthquake Engineering, Vol. 21.
  28. Kosar, U. (2003), "System identification of Bogazici Suspension Bridge", MSc. Thesis, Department of Earthquake Engineering, Bogazici University, Istanbul, Turkey.
  29. Krawinkler, H. (1996), "Push-Over Analysis: Why, How, When And When Not To Use It", Proceedings, 65th Annual Convention, Structural Engineers Association of California, Maui, Hawaii.
  30. Krawinkler, H. and Seneviratna, G. (1998), "Pros and cons of a push-over analysis for seismic performance evaluation", Eng. Struct., 20(4-6), 452-464. https://doi.org/10.1016/S0141-0296(97)00092-8
  31. Ministry of Public Work and Settlement (2007), TSC (2007), Specification for buildings to be built in earthquake zones, Ankara, Turkey.
  32. Ministry of Transportation (2008), TSC-R/2008, Seismic Technical Specifications for Coastal and Harbor Structures, Railways and Airport Construction, Ankara, Turkey.
  33. Monteiro, R. (2016), "Sampling based numerical seismic assessment of continuous span RC bridges", Eng. Struct., 118, 407-420. https://doi.org/10.1016/j.engstruct.2016.03.068
  34. Monteiro, R., Delgado, R. and Pinho, R. (2016a), "Probabilistic seismic assessment of RC Bridges: Part I - Uncertainty models", Structures, 5, 258-273. https://doi.org/10.1016/j.istruc.2015.08.002
  35. Monteiro, R., Delgado, R. and Pinho, R. (2016b), "Probabilistic seismic Assessment of RC Bridges: Part II - Nonlinear demand prediction", Structures, 5, 274-283 https://doi.org/10.1016/j.istruc.2015.08.001
  36. Peter F. (2000), "A nonlinear analysis method for performance-based seismic design", Earthq. Spectra, 16(3), 573-592. https://doi.org/10.1193/1.1586128
  37. Pinho, R., Monteiro, R., Casarotti, C. and Delgado, R. (2009), "Assessment of continuous span bridges through nonlinear static procedures", Earthq. Spectra, 25(1), 143-159. https://doi.org/10.1193/1.3050449
  38. SEAO (1995), Performance-Based Seismic Engineering of Buildings, Vision-2000 Committee, Structural Engineers Association of California, Sacramento, California.
  39. Seismosoft Ltd. (2010), Software applications for analysis of structures subjected to seismic actions (Seismomatch), Pavia, Italy.
  40. Shinozuka, M., Feng, M.Q., Kim, H. and Kim, S. (2000) "Non-linear static procedure for fragility curve development", J. Struct. Eng., 126(12), 1287-1295.
  41. Tang, Z., Xie, X., Wang, Y. and Wang, J. (2014), "Investigation of elasto-plastic seismic response analysis method for complex steel bridges", Earthq. Struct., 7(3), 333-347. https://doi.org/10.12989/eas.2014.7.3.333
  42. Transportation Research Board, (TRB) (2013), PBSD, Performance-based seismic bridge design, national cooperative highway research program (NCHRP) Synthesis 440, Washington DC.

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