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Erschienen in:
01.05.2013 | Originals Originalarbeiten
Influence of holes in the compression area of members
Erschienen in: European Journal of Wood and Wood Products | Ausgabe 3/2013
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Abstract
The influence of fastener holes in the compression area of timber and glulam members on the load-carrying capacity under compression parallel to the grain was studied. Two test set-ups were considered. In addition to an experimental study of the global influence of reductions in the cross-sectional area in glulam connections, the local behaviour around a fastener was studied with experimental and numerical analyses. The most important conclusion from this study is that the cross-section is significantly weakened and hence the load-carrying capacity of the member in the connection area decreases. The traditional assumption is wrong, that reductions in the cross-sectional area may be ignored if holes are filled with a material of higher stiffness than the wood. The numerical simulation model supports this conclusion and identifies stress peaks in the vicinity of the fasteners. It is suggested to generally take into account reductions in the cross-sectional area in the member strength verification.