Glancing-Blow Impact Forces by a Barge Train on a Lock Approach Wall
Publication: Journal of Infrastructure Systems
Volume 12, Issue 2
Abstract
In 1993 Headquarters, U.S. Army Corps of Engineers, issued the first formal Corps-wide analysis procedure providing guidance for analyzing the effects of barge impact loading on navigation structures. The guidance was rescinded in 2001 due to concerns about the conservatism of the computed results for usual and unusual loadings and accuracy with shallow approach impact angles and direct head-on impact. This paper addresses the interpretation of full-scale, low-velocity, controlled barge train (15-barge) impact experiments conducted at the decommissioned Gallipolis Lock at Robert C. Byrd Lock and Dam, Gallipolis Ferry, W.V. Two sets of methodologies were used to interpret the barge-to-wall impact data: (1) the use of the equations of equilibrium combined with an assumed value for the coefficient of friction between the barge train and the stiff-to-rigid wall, and (2) the energy method. A simplified empirical correlation is presented to calculate the maximum impact force as a function of the linear momentum normal to the wall using forces measured during these full-scale impact experiments. This empirical correlation is the basis for new Corps guidance for calculating glancing-blow impact forces.
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Acknowledgments
Funding for this research was provided by U.S. Army Corps of Engineers Innovations for Navigation Projects research program. Permission was granted by the Chief of Engineers to publish this information.
References
Arroyo, J. R., Ebeling, R. M., and Barker, B. C. (2003) “Analysis of full-scale low velocity, controlled barge impact experiments, December 1998.” Technical Rep. No. ERDC/ITL TR-03-3, U.S. Army Engineer Research and Development Center, Vicksburg, Miss. http://libweb.wes.army.mil/uhtbin/hyperion/ITL-TR-03-3.pdf
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Headquarters, Department of the Army. (1993) rescinded. “Barge impact analysis.” Engineer Technical Letter 1110-2-338, Washington, D.C.
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Patev, R. C., Barker, B. C., and Koestler, L. V. (2004). “Full-scale barge impact experiments, Rober C. Byrd Lock and Dam, Gallipolis Ferry, West Virginia.” Technical Rep. No. ERDC/ITL TR-04-1, U.S. Army Engineer Research and Development Center, Vicksburg, Miss.
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© 2006 ASCE.
History
Received: Mar 1, 2004
Accepted: Aug 4, 2005
Published online: Jun 1, 2006
Published in print: Jun 2006
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