Earthquakes and Structures

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Investigations on seismic response of two span cable-stayed bridges

  • Bhagwat, Madhav (Indian Institute of Technology Roorkee) ;
  • Sasmal, Saptarshi (CSIR-Structural Engineering Research Centre, CSIR Complex) ;
  • Novak, B. (University of Stuttgart) ;
  • Upadhyay, A. (Indian Institute of Technology Roorkee)
  • Received : 2010.04.09
  • Accepted : 2011.06.02
  • Published : 2011.12.25
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Abstract

In this paper, cable-stayed bridges with single pylon and two equal side spans, with variations in geometry and span ranging from 120 m to 240 m have been studied. 3D models of the bridges considered in this study have been analysed using ANSYS. As the first step towards a detailed seismic analysis, free vibration response of different geometries is studied for their mode shapes and frequencies. Typical pattern of free vibration responses in different frequencies with change in geometry is observed. Further, three different seismic loading histories are chosen with various characteristics to find the structural response of different geometries under seismic loading. Effect of variation in pylon shape, cable arrangement with variation in span is found to have typical characteristics with different structural response under seismic loading. From the study, it is observed that the structural response is very much dependent on the geometry of the cable-stayed bridge and the characteristics of the seismic loading as well. Further, structural responses obtained from the study would help the design engineers to take decisions on geometric shapes of the bridges to be constructed in seismic prone zones.

Keywords

References

  1. Abdel-Ghaffar, A.M. and Nazmy, A.S. (1991), "3-D nonlinear seismic behavior of cable-stayed bridges", J. Struct. Eng. - ASCE, 117(11), 3456-3476. https://doi.org/10.1061/(ASCE)0733-9445(1991)117:11(3456)
  2. Alexander, N.A. (2008), "Multi-support excitation of single span bridges, using real seismic ground motion recorded at the SMART-1 array", Comput. Struct., 86(1-2), 88-103. https://doi.org/10.1016/j.compstruc.2007.05.035
  3. Ali, H.M. and Abdel-Ghaffar, A.M. (1995), "Modelling the nonlinear seismic behavior of cable-stayed bridges with passive control bearings", Comput. Struct., 54, 461-492. https://doi.org/10.1016/0045-7949(94)00353-5
  4. Allam, S.M. and Datta, T.K. (1999), "Seismic behaviour of cable-stayed bridges under multi-component random ground motion", Eng. Struct., 21(1), 62-74. https://doi.org/10.1016/S0141-0296(97)00141-7
  5. Agarwal, T.P. (1997), "Cable-stayed bridges- parametric study", J. Bridge Eng. - ASCE, 2(2), 61-67. https://doi.org/10.1061/(ASCE)1084-0702(1997)2:2(61)
  6. ANSYS Inc (2008), ANSYS structural analysis guide, ANSYS Release 11, ANSYS Inc., Canonsburg, PA, US.
  7. Bhagwat, M. (2008), "Investigation on dynamic behavior of cable stayed bridges", Master's thesis, Institute of lightweight structures and conceptual design (ILEK), University of Stuttgart, Germany.
  8. Ernst, H. (1965), "Der E-Modul von Seilen unter Berücksichtigung des Durchhanges", Der Bauingenieur, 40(2), 52-55. (in German)
  9. Fleming, J. and Egeseli, E. (1980), "Dynamic behavior of cable-stayed bridge", Earthq. Eng. Struct. Dyn., 8(1), 1-16. https://doi.org/10.1002/eqe.4290080102
  10. George, H. (1999), "Influence of deck material on cable-stayed bridges to live loads", J. Bridge Eng. - ASCE, 4(2), 136-142. https://doi.org/10.1061/(ASCE)1084-0702(1999)4:2(136)
  11. Herzog, M. (1987), "Naherungsberechnung von Schragseilbrucken", Bautechnik, 64(10), 348-356. (in German)
  12. Indian Road Congress (IRC-6:2000), Standard specifications and code of practice for road bridges - Section: II loads and stresses, New Delhi.
  13. Indian Standard (IS-1893:2002), Criteria for earthquake resistant design of structures, Bureau of Indian Standards, New Delhi.
  14. Ito, M., Fujino, Y., Miyata, T. and Narita, N. (1991), Cable-stayed bridges: recent developments and their future, Ito, M (Ed), Elsevier Science, Proceedings of the Seminar, Yokohama, Japan, 151-170.
  15. Kanok-Nukulchai, W., Yiu, P.K.A. and Brotton, D.M. (1992), "Mathematical modelling of cable-stayed bridges", Struct. Eng. Int., 2, 108-113. https://doi.org/10.2749/101686692780616030
  16. Krishna, Prem (2007), "Long span bridges", Structural Engineering World Congress, The Third International Congress dedicated to the Art, Science and Practice of Structural Engineering, Banglore, India.
  17. MATLAB Version 6.1.0.450, Release 12.1 (2002), The MathWorks Inc., Natick, MA, US.
  18. Nazmy, A. and Ghaffar, A. (1990), "Three dimensional nonlinear static analysis of cable-stayed bridges", Comput. Struct., 34(2), 257-271. https://doi.org/10.1016/0045-7949(90)90369-D
  19. SOFiSTiK - Finite Element Analysis & Design Software, V.21, Oberschleissheim, Germany.
  20. Suites of Earthquake Ground Motions for Analysis of Steel Moment Frame Structures, University of California at Berkley, http://nisee.berkeley.edu/data/ strong_motion/sacsteel/ground_motions.html
  21. Walther, R., Houriet, B., Isler, W., Moua, P. and Klein, J. (1999), Cable-stayed bridges, Thomas Telford, London.
  22. Wang, Y. (1999), "Number of cable effects on buckling analysis of cable-stayed bridges", J. Bridge Eng. - ASCE, 4(4), 242-248. https://doi.org/10.1061/(ASCE)1084-0702(1999)4:4(242)
  23. Wyatt, T.A. (1991), "The dynamic behaviour of cable-stayed bridges: fundamentals and parametric studies," Cable-stayed Bridges: Recent Developments and Their Future, Ito, M (Ed), Elsevier Science, proceedings of the seminar, Yokohama, Japan, 151-170.
  24. Youling, D. Aiqun, L., Jun, S. and Yang, D. (2008), "Experimental and analytical studies on Static and dynamic characteristics of steel box girder for Runyang cable-stayed bridge", Adv. Struct. Eng., 11(4), 425-438. https://doi.org/10.1260/136943308785836781

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