Earthquakes and Structures

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Parametric seismic evaluation of highway overpass bridges in moderate seismic areas

  • Simon, Jozsef (Department of Structural Engineering, Budapest University of Technology and Economics) ;
  • Vigh, Gergely L. (Department of Structural Engineering, Budapest University of Technology and Economics)
  • Received : 2016.07.18
  • Accepted : 2017.02.12
  • Published : 2017.03.25
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Abstract

Prior to modern seismic provisions, several bridges were not designed for seismic actions in moderate seismic areas. Precast multi-girder and slab bridges are typical highway overpass structures; they have a significant contribution to national bridge stocks. Since the seismic behavior is questionable, a preliminary parametric study is conducted to determine critical configurations and components. The results indicate that the behavior of the abutments, backfill soil, superstructure and foundation is normally satisfactory; however, the superstructure-abutment joints are critical for both single- and multi-span bridges, while the piers are also critical for longer multi-span configurations. The parametric results provide a solid basis both for detailed seismic assessment and development of design concepts of newly built structures in moderate seismic zones.

Keywords

Acknowledgement

Supported by : Hungarian Academy of Sciences

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