Punching-Shear Behavior of Bridge Decks under Fatigue Loading

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Title: Punching-Shear Behavior of Bridge Decks under Fatigue Loading

Author(s): John C. Graddy, Jubum Kim, James H. Whitt, Ned H. Burns, and Richard E. Klingner

Publication: Structural Journal

Volume: 99

Issue: 3

Appears on pages(s): 257-266

Keywords: fatigue; punching shear; shear; slab.

DOI: 10.14359/11909

Date: 5/1/2002

Abstract:
The punching-shear behavior of bridge decks under fatigue loading, including the effects of arching action, is studied experimentally and analytically. The experimental investigation includes static and pulsating fatigue tests on full-scale, cast-in-place and precast, prestressed panel specimens. Failure modes, loads, and test specimen behaviors observed during the experimental tests are discussed and compared with analytical predictions. Finite-element models developed for a full-scale bridge and for test specimens are discussed, and the results obtained from them are compared with test results. A method is proposed that includes the effects of membrane compression in calculations of punching-shear capacity, and that gives reasonable agreement with test results. S-N curves are proposed for pulsating fatigue design and assessment.


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