Interaction and multiscale mechanics

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Behavior of cable-stayed bridges built over faults

  • Raftoyiannis, I.G. (Department of Civil Engineering, National Technical University of Athens) ;
  • Michaltsos, G.T. (Department of Civil Engineering, National Technical University of Athens) ;
  • Konstantakopoulos, T.G. (Department of Civil Engineering, National Technical University of Athens)
  • Received : 2012.06.10
  • Accepted : 2012.08.02
  • Published : 2012.09.25
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Abstract

Cable-stayed bridges are commonly used in modern bridge engineering for covering long spans. In some special cases, the designer is obliged to build such a bridge over an existing fault. Activation of this fault is possible to bring about a relative displacement or separation movement between two neighboring pylons of the bridge built on opposite sides of the fault. In this work, the effect of such a fault-induced pylon displacement on bridge's deformations and on cables' strength is thoroughly studied for several types of cable-stayed bridges and useful conclusions are drawn aiming the design. The influence of a possible earthquake and traffic loads crossing the bridge when the pylons are moving away from each other is not examined.

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References

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