The enhanced performance of split-ring connections through prestressing

Autor:	J. H. P. Quenneville, K. Van Dalen
Rok vydání:	1991
Předmět:	Split ring Transverse plane Engineering Lap joint business.industry Truss Structural engineering business General Environmental Science Civil and Structural Engineering Douglas fir
Zdroj:	Canadian Journal of Civil Engineering. 18:830-838
ISSN:	1208-6029 0315-1468
DOI:	10.1139/l91-100
Popis:	This paper examines the concept of enhancing the performance of timber connectors in truss joints by the introduction of transverse prestressing. The behaviour of lap splices of Douglas fir, with 63 mm split-ring connectors and end distances of 50, 100, 150, and 210 mm, was examined for various levels of prestress in a laboratory study. As well, the magnitude of the load that can be carried by the connection through friction between faying surfaces was also assessed for various levels of prestress. The simple technique used in the laboratory for introducing prestress is described. Results of the laboratory tests on 20 joint configurations are presented, and the experimentally determined strengths are compared with the calculated resistances using the provisions of CAN\CSA-086.1-M89 "Engineering design in wood (limit states design)." Key words: timber, connector, prestress, truss joint.
Databáze:	OpenAIRE
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