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Structural Engineering and Mechanics Volume 12, Number 3, September 2001 , pages 341-346 DOI: https://doi.org/10.12989/sem.2001.12.3.341 |
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Effects of strong ground motions of near source earthquakes on response of thin-walled L-shaped steel bridge piers |
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Guanmo Xie(China), Takeo Taniguchi and Nawawi Chouw(Japan)
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| Abstract | ||
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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. | ||
| Key Words | ||
| near source earthquakes; strong vertical ground motion; thin-walled steel bridge piers; inelastic response; damage index; evolutionary-degrading hysteretic model. | ||
| Address | ||
| Guanmo Xie, Department of Engineering Mechanics, Wuhan University of Technology, Wuhan 430070, China Takeo Taniguchi and Nawawi Chouw, Department of Environmental and Civil Engineering, Okayama University, Okayama 700-8530, Japan | ||