Ultimate State of Thin-Walled Circular Steel Columns Subjected to Biaxial Horizontal Forces and Biaxial Bending Moments Caused by Bidirectional Seismic Accelerations
Publication: Journal of Structural Engineering
Volume 141, Issue 4
Abstract
To check the safety of thin-walled circular steel columns used for bridge piers of elevated-girder bridges, a versatile interaction equation is derived to specify the ultimate state of the columns under the coupling of bidirectional horizontal seismic accelerations. These bidirectional seismic accelerations generally cause biaxial horizontal force components and biaxial bending moment components to act at the top of the columns. Therefore, the interaction equation is derived in this paper in terms of these force and moment components. In this interaction equation, the bending moment components are converted to equivalent horizontal force components. The accuracy of the ultimate interaction equation is first investigated by carrying out a bidirectional shaking table test and an advanced dynamic analysis on single-column models in which a mass with translational and rotational inertias is fixed at the top of the columns. As an application to actual problems, an advanced dynamic response analysis is used to examine the validity of the interaction equation when applied to a column of a two-span simply supported elevated-girder bridge model under bidirectional seismic accelerations. In this model, the center of a superstructure is supported by a single circular steel column, whereas both ends of the superstructure are supported by abutments. The numerical analysis showed that the proposed ultimate interaction equation considering the effects of the biaxial horizontal force components and biaxial bending moment components accurately predicts the ultimate state of the column. The biaxial bending moment components have some large effect on the ultimate state of the column.
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Acknowledgments
This work is partly supported by JSPS KAKENHI Grant No. 23246084.
References
D’Aniello, M., Landolfo, R., Piluso, V., and Rizzano, G. (2012). “Ultimate behavior of steel beams under non-uniform bending.” J. Constr. Steel Res., 78, 144–158.
Dassault Systemes. (2007). ABAQUS/STANDARD user’s manual, version 6.7, Waltham, MA.
Gao, S., Usami, T., and Ge, H. (1998). “Ductility evaluation of steel bridge piers with pipe sections.” J. Struct. Eng., 260–267.
Goto, Y., Jiang, K., and Obata, M. (2006). “Stability and ductility of thin-walled circular steel columns under cyclic bidirectional loading.” J. Struct. Eng., 1621–1631.
Goto, Y., Muraki, K., and Obata, M. (2009). “Ultimate state of thin-walled circular steel columns under bidirectional seismic accelerations.” J. Struct. Eng., 1481–1490.
Goto, Y., Wang, Q. Y., and Obata, M. (1998). “FEM analysis for hysteretic behavior of thin-walled columns.” J. Struct. Eng., 1290–1301.
Hill, R. (1958). “A general theory of uniqueness and stability in elastic-plastic solid.” J. Mech. Phys. Solids, 6(3), 236–249.
Japan Road Association. (2002). “Seismic design.” Specifications for highway bridges, Vol. 5, Maruzen, Tokyo.
Jiao, H., and Zhao, X. L. (2004). “Section slenderness limits of very high strength circular steel tubes in bending.” Thin-walled Struct., 42(9), 1257–1271.
Nishikawa, K., Yamamoto, S., Natori, T., Terao, K., Yasunami, H., and Terada, M. (1998). “Retrofitting for seismic upgrading of steel bridge columns.” Eng. Struct., 20(4–6), 540–551.
Obata, M., and Goto, Y. (2007). “Development of multidirectional structural testing system applicable to pseudodynamic test.” J. Struct. Eng., 638–645.
Public Work Research Institute. (1997). “Report of cooperative research on limit state seismic design for bridge piers, I.” Tsukuba, Japan.
Information & Authors
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Published In
Journal of Structural Engineering
Volume 141 • Issue 4 • April 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jul 24, 2013
Accepted: Mar 5, 2014
Published online: Jul 11, 2014
Discussion open until: Dec 11, 2014
Published in print: Apr 1, 2015
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