Half lap scarf joint with inclined faces and wooden dowels: research and design

0464829 - ÚTAM 2017 RIV AT eng C - Konferenční příspěvek (zahraniční konf.)
Kunecký, Jiří - Hasníková, Hana - Kloiber, Michal - Fajman, P.
Half lap scarf joint with inclined faces and wooden dowels: research and design.
WCTE 2016 - World Conference on Timber Engineering. Vídeň: Vienna University of Technology, 2016, s. 254-261, č. článku 124667. ISBN 978-390303900-1.
[World Conference on Timber Engineering (WCTE 2016). Vídeň (AT), 22.08.2016-25.08.2016]
Grant CEP: GA MK(CZ) DG16P02M026
Klíčová slova: lap scarf joint * experimental testing * FE * digital image correlation * design guideline
Kód oboru RIV: AL - Umění, architektura, kulturní dědictví

The carpentry joints have been an integral part of timber structures. However, the design of both the traditional joints and the new CNC-produced ones is not supported in the standards sufficiently. In addition, wooden coupling elements are omitted completely. The article deals with the development of design rules for a lap scarf joint with oblique faces and wooden dowels intended for the replacements of the decayed parts of ceiling joists and other members of timber structures. An overview over the whole research (experimental testing, numerical modelling, theoretical analysis, etc.) and the development of design guide is presented. Four types of the lap joint were created; each of the joint type is proper for some particular use in a structure. Load bearing capacity (bending moment-normal force) diagrams were constructed and equations of the repaired beam stiffness were assessed. All the results have been published in the Czech Republic in a form of certified design guidelines and the contribution is waiting to be presented to the international community to inform all interested researchers and designers about the work that has been done.
Trvalý link: http://hdl.handle.net/11104/0263676