Effectiveness of Anticheck Bolts in Split Ring Connections Repair
Publication: Journal of Performance of Constructed Facilities
Volume 13, Issue 4
Abstract
There are numerous large span timber hangars dating back to World War II. These structures were built with large green timbers and were normally assembled using split rings and/or shear plates. Because of shrinkage in the timbers in the joint area, most of the structural members show severe splitting. As a precautionary measure, the capacity of the connections is usually reduced. A typical repair method is to install anticheck (A/C) bolts running perpendicular to the longitudinal axis of the timbers. Repairing members using A/C bolts is more favorable over other methods because A/C bolts are easy to install. Three groups of full-scale specimens representing typical connections in Warren truss hangars were fabricated with splits in the truss tension members, and they were tested using A/C bolts to verify the effectiveness of A/C bolts as means of repair for split connection members in large span timber hangars. Results showed that the strength of damaged tension members where splits run between split ring rows was not significantly different from undamaged tension members. In addition, A/C bolts significantly reinforced some damaged connections and could be used to reinforce undamaged split ring connections and force an ultimate ductile failure mode.
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References
1.
Charron, A. and Quenneville, J. H. P. (1994). “Combined effects of end distance and spacing on the resistance of split ring connectors loaded in tension.” Can. J. Civ. Engrg., Ottawa, 21(5), 789–796.
2.
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Quenneville, J. H. P., and Charron, A. (1996). “Behaviour of single and double 102 mm split ring connections loaded in tension.” Can. J. Civ. Engrg., Ottawa, 23(13), 602–613.
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Quenneville, J. H. P., and Sauvé, G. (1998). “Strength and behaviour of full-scale split ring connections.” Proc., World Conf. on Timber Engrg., Presses polytechniques et universitaires romandes, Lausanne, Switzerland, 816–817.
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Received: Dec 10, 1998
Published online: Nov 1, 1999
Published in print: Nov 1999
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