Title:
Seismic Simulation of Bridges Considering Bending and Torsion Interaction
Author(s):
Yang Yang and Ruili He
Publication:
Symposium Paper
Volume:
342
Issue:
Appears on pages(s):
178-196
Keywords:
reinforced concrete, bridge column, cyclic loading, failure analysis, torsion, truss modeling
DOI:
10.14359/51725944
Date:
6/1/2020
Abstract:
Concrete columns in curved bridges have reportedly showed high interaction between bending and torsional moments when subjected to design-level earthquake loading. In order to accurately evaluate the performance of curved bridges under earthquake loadings, it is necessary to incorporate the interaction behavior into computational models. However, very limited work has been reported in the literature, which includes finite element models involving threedimensional solid elements and user-developed fiber elements in open-source computing tools; the former involves significant computational effort when multiple levels of earthquake records need to be considered, while the latter is not widely available in analysis tools like OpenSees. This study developed a modeling technique to simulate the interaction between bending and torsional moments in bridge columns through the discretization of the column into longitudinal, transverse, and diagonal elements. In this study, the developed modeling technique was validated against
experimental data from a previous study, and case studies on typical curved bridges were presented to show its efficiency in seismic simulation.
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