Seismic Performance of Rectangular-Shaped Steel Piers under Cyclic Loading
Publication: Journal of Structural Engineering
Volume 131, Issue 2
Abstract
The purpose of this experimental work is to investigate the seismic resistance characteristics of rectangular-shaped steel bridge piers commonly found in rigid frames, concerning the cross-sectional aspect ratios. To this end, seven specimens were tested under cyclic lateral loads. Six of them were under constant compressive axial load and one was under variable axial load. At first, the effects of web to flange aspect ratio ( ratio) on the differences between actual and estimated yield displacements, yield loads and flexural stiffness were examined. ratio of around 2.0 was found to offer minimum difference between those values. Secondly, the effects of ratio on ultimate strength, ductility, and energy dissipation capacity were determined. The highest strength was observed in columns with a ratio of about 2.0 while the highest ductility and cumulative energy dissipation capacity were in those with a ratio of around 1.60. Also, the effect of varying axial load on the strength was examined and found to be relatively small. Finally, finite element analyses were conducted and predictions were compared with test results.
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Acknowledgments
This experiment was carried out at SEIsmic Resistance EXperiment center (SEIREX) at Aichi Institute of Technology, Japan. The writers wish to acknowledge the financial support provided by the Japan Bridge Construction Association and Aichi Institute of Technology (AIT) in this research project. The writers also wish to thank the students of Structural Mechanics Laboratory for their assistance in carrying out the experiment. The financial aid provided by Japan Society for the Promotion of Science (JSPS) to one of the writers (K.A.S.S.) is also gratefully acknowledged.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 131 • Issue 2 • February 2005
Pages: 240 - 249
Copyright
© 2005 ASCE.
History
Received: Feb 26, 2003
Accepted: May 3, 2004
Published online: Feb 1, 2005
Published in print: Feb 2005
Notes
Note. Associate Editor: Mark D. Bowman
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