Structural Engineering and Mechanics

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Effects of strong ground motions of near source earthquakes on response of thin-walled L-shaped steel bridge piers

  • Xie, Guanmo (Department of Engineering Mechanics, Wuhan University of Technology) ;
  • Taniguchi, Takeo (Department of Environmental and Civil Engineering, Okayama University) ;
  • Chouw, Nawawi (Department of Environmental and Civil Engineering, Okayama University)
  • Published : 2001.09.25
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Abstract

Near source earthquakes can be characterized not only by strong horizontal but also by strong vertical ground motions with broad range of dominant frequencies. The inelastic horizontal response of thin-walled L-shaped steel bridge piers, which are popularly used as highway bridge supports, subjected to simultaneous horizontal and vertical ground excitations of near source earthquakes is investigated. A comprehensive damage index and an evolutionary-degrading hysteretic model are applied. Numerical analysis reveals that the strong vertical excitation of a near source earthquake exerts considerable influences on the damage development and horizontal response of thin-walled L-shaped steel bridge piers.

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References

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