Experimental Investigation of Seismically Resistant Bridge Piers under Blast Loading
Publication: Journal of Bridge Engineering
Volume 16, Issue 1
Abstract
This paper reports the findings of research examining the blast resistance of bridge piers that are designed in accordance with current knowledge and specifications to ensure ductile seismic performance. Blast testing was conducted on 1/4 scale ductile RC columns, and nonductile RC columns retrofitted with steel jacketing. The seismically designed RC and steel jacketed RC columns did not exhibit a ductile behavior under blast loading and failed in shear at their base rather than flexural yielding. A moment-direct shear interaction model was proposed to account for the reduction of direct shear resistance on cross sections when large moments are simultaneously applied. This made it possible to match and explain the experimentally obtained behavior when direct shear strength was compared with the shear demand obtained from plastic analysis.
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Acknowledgments
This research was conducted by the University at Buffalo and was supported by the Federal Highway Administration under Contract No. UNSPECIFIEDDTFH61-98-C-00094 to the Multidisciplinary Center for Earthquake Engineering Research. This support is gratefully appreciated. However, any opinions, findings, conclusions, and recommendations presented in this paper are those of the writers and do not necessarily reflect the views of the sponsors. Special thanks are given to James C. Ray at the Eng. Research and Dev. Center of the USACE for his help and assistance in the logistics of the experiments.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 16 • Issue 1 • January 2011
Pages: 63 - 71
Copyright
© 2011 ASCE.
History
Received: Dec 11, 2008
Accepted: Mar 23, 2010
Published online: Mar 25, 2010
Published in print: Jan 2011
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