One-Dimensional Model for Multi-Barge Flotillas Impacting Bridge Piers |
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Authors: | Peng Yuan & Issam E Harik |
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Affiliation: | Department of Civil Engineering, 161A Raymond Building, University of Kentucky, Lexington, KY 40506-0281, USA |
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Abstract: | Abstract: The serious consequence of barge-bridge collisions necessitates the study of barge impact loadings on bridges. This article introduces an elastoplastic spring-mass model for the analysis of multi-barge flotillas colliding with bridge piers at zero angle of attack. The model accounts for the essential factors pertaining to barge/flotilla impacts, such as pier geometry and stiffness, and dynamic interaction between barges. A method to identify the elastoplastic behavior of barge crushing is also presented. The proposed method generates impact force time-histories for a multitude of flotilla configurations in a matter of minutes, which is especially valuable in probabilistic analysis requiring many collision simulations. The results from this study are compatible with the respective impact time-histories produced by exhaustive finite element simulations. A bridge pier impacted by a three-barge and a 15-barge flotilla is studied. |
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