Assistant director, Rocky Mountain Forest and Range Experiment Station, USDA Forest Service, Fort CollinsCO,
Professor of wood engineering, Colorado State University, Fort Collins, CO
Professor of mechanical engineering, Colorado State University, Fort Collins, CO
(Received 9 September 1996; accepted 27 March 1997)
Two hundred forty-three experiments were conducted on bolted wood connections having a variety of aspect ratios (length of bolt in member/bolt diameter) and end distances with loading applied in tension and compression. Load-displacement (P-Δ) curves were generated for each test from which pertinent characteristic values were derived. Important connection characteristics observed included ultimate load and displacement, 5% offset load, proportional limit, and failure mode.
Results show the effects of connection geometry and load application on the strength and stiffness of single bolt connections. Among the most important of these are that tension and compression loadings produce different P-Δ behavior and failure modes. These differences are amplified or muted depending upon connection aspect ratio. Furthermore, connection aspect ratio and end distance interact to influence P-Δ behavior and failure mode.
Paper ID: JTE11969J