Interaction and multiscale mechanics

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

The influence of different support movements and heights of piers on the dynamic behavior of bridges -Part II: earthquake acting along the bridge axis

  • Raftoyiannis, I.G. (Laboratory of Steel Structures, Department of Civil Engineering, National Technical University of Athens) ;
  • Konstantakopoulos, T.G. (Laboratory of Steel Structures, Department of Civil Engineering, National Technical University of Athens) ;
  • Michaltsos, G.T. (Laboratory of Steel Structures, Department of Civil Engineering, National Technical University of Athens)
  • Received : 2009.09.14
  • Accepted : 2010.01.19
  • Published : 2010.03.25
⟨ Previous Next ⟩

Abstract

In this paper, a simple approach is presented for studying the dynamic response of multi-span steel bridges supported by pylons of different heights, subjected to earthquake motions acting along the axis of the bridge with spatial variations. The analysis is carried out using the modal analysis technique, while the solution of the integral-differential equations derived is obtained using the successive approximations technique. It was found that the height of piers and the quality of the foundation soil can affect significantly the dynamical behavior of the bridges studied. Illustrative examples are presented to highlight the points of concern and useful conclusions are gathered.

Keywords

References

  1. Abrahamson, N.A., Schneider, J.F. and Stepp, J.C. (1991), "Empirical spatial coherency functions for application to soil-structures interaction analyses", Earthq. Spectra, 7(1), 41-54. https://doi.org/10.1193/1.1585661
  2. Betti, R., Abdel-Ghaffar, A.M. and Niazy, A.S. (1993), "Kinematic soil-structure interaction for long-span cable-supported bridges", Earthq. Eng. Struct. D., 22(5), 415-430. https://doi.org/10.1002/eqe.4290220505
  3. Bogdanoff, J.L., Goldberg, J.E. and Schiff, A.J. (1965), "The effect of ground transmission time on the response of long structures", Bull. Seismol. Soc. Am., 55, 627-640.
  4. Eurocode 8-Part 2 (EC8-2) (2002), Bridges, European Committee for Standardization, Brussels, ENV 1998-2.
  5. Harichandran, R.S. and Wang, W. (1990), "Response of indeterminate two-span beam to spatially varying seismic excitation", Earthq. Eng. Struct. D., 19, 173-187. https://doi.org/10.1002/eqe.4290190203
  6. Krasnov, M., Kiselev, A. and Makarenko, G. (1971), Problems and exercises in integral equations. Mir Publishers, Moscow.
  7. Lovitt, W.V. (1924), Linear Integral Equations, New York.
  8. Michaltsos, G.T. (2005), Dynamic problems of Steel Bridges, (Ed. Symeon), Athens, (in Greek).
  9. Monti, G., Nuti, C. and Pinto, P. (1996), "Nonlinear response of bridges under multisupport excitation", J. Struct. Eng-ASCE, 122(10), 1147-1158. https://doi.org/10.1061/(ASCE)0733-9445(1996)122:10(1147)
  10. Nikolaou, A., Mylonakis, G., Gazetas, G. and Tazoh, T. (2001), "Kinematic pile bending during earthquakes: Analysis and measurements", Geotechnique, 51(5), 425-440. https://doi.org/10.1680/geot.2001.51.5.425
  11. Price, T.E. and Eberhard, M.O. (1998), "Effects of spatially varying ground motions on short bridges", J. Struct. Eng-ASCE, 124(8), 948-955. https://doi.org/10.1061/(ASCE)0733-9445(1998)124:8(948)
  12. Wylie, C.R. (1975), Advanced Engineering Mathematics, McGraw-Hill Kogakusha, Ltd., Tokyo.
  13. Zerva, A. (1990), "Response of multi-span beams to spatially incoherent seismic ground motions", Earthq. Eng. Struct. D., 19(6), 819-832. https://doi.org/10.1002/eqe.4290190604
  14. Zerva, A. (1999), Spatial variability of seismic motions recorded over extended ground surface areas, Wave motion in earthquake engineering, (Eds. kausel, E. and Manolis, G.), MIT Press, Cambridge, Mass.

Cited by

  1. Parametric resonance of steel bridges pylons due to periodic traffic loads vol.82, pp.10-11, 2012, https://doi.org/10.1007/s00419-012-0666-9
  2. Behavior of cable-stayed bridges under dynamic subsidence of pylons vol.5, pp.4, 2012, https://doi.org/10.12989/imm.2012.5.4.317