Franke, Steffen; Franke, Bettina; Salenikovich, Alexander (22 June 2023). Bonded-In Rods in Beech Glulam: Efficiency of a Recess in Bondline In: WCTE World Conference on Timber Engineering 2023. Oslo. 19.-22.6.2023. 10.52202/069179-0205
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The load-bearing behaviour of bonded-in steel threaded rods (BiR) in hardwood was investigated with special focus on the prevention of the splitting behaviour using a recess (not bonded zone) in the bondline. The main objective was to analyse the influence of the not-bonded length and the rod edge distance on the distribution of longitudinal shear and transverse tensile stresses in joints with bonded-in rods in beech glulam. Several BiR joint configurations were tested experimentally and a wide range of joint configurations with various combinations of recess and bonded lengths and edge distances were numerically investigated. According to the experimental and numerical analyses, a recess length of 2d (two times rod diameter) produced a significant positive effect on the stress distribution reducing the risk of splitting of beech glulam in the studied joint configurations.