Evaluation of Strength and Ductility of Thin-Walled Stiffened Box Sectional Steel Bridge Piers Using Fiber Model

Jian Dong Zhang; Han Bin Ge; Chun Lin Wang

doi:10.4028/www.scientific.net/AMM.226-228.1561

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 226-228Evaluation of Strength and Ductility of...

Evaluation of Strength and Ductility of Thin-Walled Stiffened Box Sectional Steel Bridge Piers Using Fiber Model

Abstract:

A simplified seismic evaluation method for steel members with thin-walled stiffened box sections is developed. First, a finite element model based on the shell element was carried out and its effectiveness was validated by comparison with the experiment. Twelve numerical cases were then simulated by the shell model and the fiber model, respectively, and their accuracies were discussed. Numerical results showed that the proposed method using the fiber model, employing the bilinear kinematic hardening relation, is of good accuracy. If the maximum strength is taken as the ultimate point, the bilinear stress-strain relation, replacing the yield point by the buckling stress, was recommended. If a point corresponding to 95% of the maximum strength after the peak is regarded as the ultimate point, the elastic-perfectly plastic stress-strain relation was suggested.

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Periodical:

Applied Mechanics and Materials (Volumes 226-228)

Pages:

1561-1566

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.226-228.1561

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Online since:

November 2012

Authors:

Jian Dong Zhang, Han Bin Ge, Chun Lin Wang

Keywords:

Fiber Element, Seismic Evaluation Method, Steel Bridge, Stiffened Box Section

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