A Numerical Method for Computing Barge Impact Forces Based on Ultimate Strength of the Lashings Between Barges
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. According to the ETL 1110-2-338 engineering procedure, the magnitude of the impact forces generated by a particular collision event is dependent on the mass including hydrodynamic added mass of the barge train, the approach velocity, the approach angle, the barge train moment of inertia, damage sustained by tie barge structure, and friction between the barge and the wall. Two significant concerns have been raised since the release of the ETL 1110-2-338 procedure: 1) A key aspect of the ETL 1110-2-338 engineering formulation is computation of collision energy dissipated in nonrecoverable, plastic hull deformation of (i.e., damage to) the corner of the barge where impact with the wall occurs. However, the majority of the impacts made by barge trains transiting Corps locks do not result in damage to the barge structure nor damage to the walls. 2) In addition, several engineers who have used the ETL 1110-2-338 engineering procedure have questioned the accuracy of the computed results. In 2003, the U.S. Army Engineer Research and Development Center issued the report ERDC/ITL-TR-03-3, "Analysis of Impact Loads from Full-Scale, Low-Velocity, Controlled Barge Impact Experiments, December 1998," by Arroyo, Ebeling, and Barker. This report addresses the interpretation of 8 of the 44 December 1998 full-scale, low-velocity, controlled-impact, barge train impact experiments conducted at the decommissioned Gallipolis Lock at Robert C. Byrd Lock and Dam, Gallipolis Ferry, WV.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2004
- Accession Number
- ADA427517
Entities
People
- Jose R. Arroyo
- Robert M. Ebeling
Organizations
- Engineer Research and Development Center