Preliminary Design: Barge Connection System
Technical Report,01 Oct 1995,01 Sep 1996
MCA Engineers, Inc. Costa Mesa United States
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This report summarizes the development of a preliminary design for a modular barge connection system. The effort included the following 1 a time-domain analysis of two barge modules in Sea State 3 to estimate key connection system performance parameters 2 development of a barge connection system capable of withstanding hull girder shears and moments and 3 development of a system for drawing together and aligning two barge modules in a Sea State 3 to facilitate engagement of the connection system. The resulting design uses a ratchet engine winch to draw the modules together, allowing full-strength shear and moment connectors to engage. The connection system includes three elements retracting fenders, shear connectors, and moment connectors. The fenders are extended during the initial barge coupling process, absorbing impact energy. The fenders are then easily retracted to allow alignment and engagement of the shear and moment connectors. The connectors incorporate shock mitigation design features, and can be tightened using either air-powered tools or hand tools. The complete system - winches, connectors, and underlying analysis - has been orchestrated to provide maximum utility and flexibility at minimal cost.
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