The Effect of Stiffness Degradation on the Three-Dimensional Seismic Response of Highway Bridges

by M. "Saiid" Saiidi, Univ of Nevada, United States,
George Ghusn, Univ of Nevada, United States,

Document Type: Proceeding Paper

Part of: Seismic Engineering: Research and Practice


This paper describes the effect of modeling of the inelastic pier behavior on the seismic response of three reinforced concrete bridges. Each bridge was analyzed twice once using a yield surface elasto-plastic pier element and once using a degrading five-spring hysteretic element (5-SE). It is shown that bridge response is sensitive to the hysteresis model, and that no consistent trend can be identified in terms of the correlation between response from the two models.

Subject Headings: Highway bridges | Structural models | Stiffening | Chemical degradation | Seismic tests | Seismic effects | Structural members | Concrete bridges

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