Interaction and multiscale mechanics

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The influence of different support movements and heights of piers on the dynamic behavior of bridges -Part I: Earthquake acting transversely to the deck

  • Michaltsos, George T. (Laboratory of Steel Structures, Department of Civil Engineering, National Technical University of Athens) ;
  • Raftoyiannis, Ioannis G. (Laboratory of Steel Structures, Department of Civil Engineering, National Technical University of Athens)
  • Received : 2009.09.14
  • Accepted : 2009.12.01
  • Published : 2009.12.25
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Abstract

This paper presents a simple model for studying the dynamic response of multi-span bridges resting on piers with different heights and subjected to earthquake forces acting transversely to the bridge, but varying spatially along its length. The analysis is carried out using the modal superposition technique, while the solution of the resulting integral-differential equations is obtained via the Laplace transformation. It has been found that the piers' height and the quality of the foundation soil can affect significantly the dynamic behavior of such bridges. Typical examples showing the effectiveness of the method are presented with useful results listed.

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References

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