Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Strengthening of large diameter singel dowel joints
A preliminary study for implementation of a novel truss node is presented. For this purpose, the load-slip behaviour of double-shear loaded single large dowel joints was investigated. Out of a total of 26 laboratory shear tests, 5 were performed on non-reinforced specimens. The remaining 21 tests were performed on specimens reinforced by means of self-tapping screws. All laboratory tests were conducted under monotonic quasi-static loading. The distance between the dowel and the loaded edge of the timber element was considerably smaller than the minimum distance suggested by building codes. The influence of both i) the placement and ii) the diameter of the reinforcing screws on the load-slip behaviour of the joint was studied.The study shows that the scatter in test results is considerably reduced when reinforcing screws are used. The study also shows that the reinforcing screws prevent the joint to fail due to premature splitting. Thus, due to the presence of the reinforcing screws, no reduction of load-carrying capacity of the dowel caused by the short distance between dowel and loaded edge of the timber element needs to be applied. Further, the reinforced specimens exhibited a very ductile load-slip behaviour and - after the first drop in the load-slip curve occurred - the joints still showed a significant reserve of load-carrying capacity.
Strengthening of large diameter singel dowel joints
A preliminary study for implementation of a novel truss node is presented. For this purpose, the load-slip behaviour of double-shear loaded single large dowel joints was investigated. Out of a total of 26 laboratory shear tests, 5 were performed on non-reinforced specimens. The remaining 21 tests were performed on specimens reinforced by means of self-tapping screws. All laboratory tests were conducted under monotonic quasi-static loading. The distance between the dowel and the loaded edge of the timber element was considerably smaller than the minimum distance suggested by building codes. The influence of both i) the placement and ii) the diameter of the reinforcing screws on the load-slip behaviour of the joint was studied.The study shows that the scatter in test results is considerably reduced when reinforcing screws are used. The study also shows that the reinforcing screws prevent the joint to fail due to premature splitting. Thus, due to the presence of the reinforcing screws, no reduction of load-carrying capacity of the dowel caused by the short distance between dowel and loaded edge of the timber element needs to be applied. Further, the reinforced specimens exhibited a very ductile load-slip behaviour and - after the first drop in the load-slip curve occurred - the joints still showed a significant reserve of load-carrying capacity.
Strengthening of large diameter singel dowel joints
Crocetti, Roberto (Autor:in) / Axelson, Mats (Autor:in) / Sartori, Tiziano (Autor:in)
01.01.2010
Local 10984
Paper
Elektronische Ressource
Englisch
Xaveer De Geyter Architecten in de Singel
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