Mechanical analysis of scarf joint fastened using cylindrical wooden dowel

0477198 - ÚTAM 2018 RIV SE eng C - Konferenční příspěvek (zahraniční konf.)
Tippner, J. - Milch, J. - Kunecký, Jiří - Kloiber, Michal - Brabec, M. - Sebera, V.
Mechanical analysis of scarf joint fastened using cylindrical wooden dowel.
Conference proceedings, ICTB 2017, 3rd International Conference on Timber Bridges. Skelleftea: RISE Research Institutes of Sweden, 2017. SP Rapport 2017:26. ISSN 0284-5172.
[International Conference on Timber Bridges, ICTB 2017 /3./. Skelleftea (SE), 26.06.2017-29.06.2017]
Grant CEP: GA MK(CZ) DG16P02M026
Klíčová slova: all-wooden joints * scarf joint * dowel * spruce * oak * digital image correlation
Obor OECD: Construction engineering, Municipal and structural engineering

Traditional all-wooden woodworking joints play an important role in the behaviour of timber structures. These joints are also widely used when historically valuable constructions are being reconstructed and the connections are usually the masterpieces that testify to the high carpentry skills and knowledges of the overall mechanical behaviour. Within historical timber structures traditional carpentry joints were used while wooden dowel fixed mutual position of elements. Main aim of this study was to contribute to knowledge base about prediction and analysis of the mechanical performance of frequently used scarf joints made from spruce wood fastened using oak dowels. The objectives were to determine the joints' slip moduli and load-carrying capacity by means of theoretical and experimental approaches, in next to assess the mechanical behaviour of dowels through experimental investigation, and finally to perform a strain analysis of dowels. For these purposes, the optical technique employing three-dimensional full-field digital image correlation was used. The experiments were done on the full-scale specimens meeting the requirements of European standards (EN 383 and EN 26891), which were made from Norway spruce (Picea abies L. Karst.) and English oak (Quercus robur L.). The mechanical load consisted in tensile parallel and perpendicular to grain direction within the main components. The results of this study showed good correlation between theoretical approach based on based on Beam on Elastic Foundation theory and European yield model theory and experimental observations.
Trvalý link: http://hdl.handle.net/11104/0273571