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European Journal of Wood and Wood Products
Erschienen in: European Journal of Wood and Wood Products 5/2013

01.09.2013 | Originals Originalarbeiten

Embedment tests parallel-to-grain and ductility aspects using various wood species

verfasst von: C. Sandhaas, G. J. P. Ravenshorst, H. J. Blass, J. W. G. van de Kuilen

Erschienen in: European Journal of Wood and Wood Products | Ausgabe 5/2013

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Abstract

Embedment tests parallel-to-grain using dowels with different steel grades and five wood species were carried out. The specimen sampling with regard to density was random and the specimens were tested at different moisture contents. Furthermore, own tests were extended by results from literature. Observed ductility aspects using different wood species are discussed. Comparisons with the existing design equation in Eurocode 5 were made. It was found that the equation penalises species with higher densities. An adjustment of density and embedment strength to 12 % moisture content reduced the scatter considerably. Moreover, based on the test results, the sophisticated distinction of softwood in many strength classes based on minor differences in density is considered to be overly precise as far as embedment strength is concerned. An influence of the dowel steel grade was measured although the dowels remained elastic as required by standard embedment test protocols.
Vorheriger Artikel Processing and flexural properties of surface reinforced flat pressed WPC panels
Nächster Artikel An analytical model for embedment stiffness of a dowel in timber under cyclic load

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Literatur
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EN-12512 (2001) Timber structures-test methods-cyclic testing of joints made with mechanical fasteners. European Committee for Standardisation, Brussels, Belgium
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EN-338 (2009) Structural timber-strength classes. European Committee for Standardisation, Brussels, Belgium
EN-383 (2007) Timber structures-test methods-determination of embedment strength and foundation values for dowel-type fasteners. European Committee for Standardisation, Brussels, Belgium
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Van de Kuilen JWG (1999) The residual load carrying capacity of timber joints. Heron 44(3):187–214
Van de Kuilen JWG, Blass HJ (2005) Mechanical properties of azobé (Lophira alata). Holz Roh Werkst 63(1):1–10CrossRef
NEN-5493 (2010) Quality requirements for hardwoods in civil engineering works and other structural applications. Nederlandse Norm, Delft, The Netherlands
Rodd PD (1973) The analysis of timber joints made with circular dowel connectors. Dissertation. University of Sussex, UK
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Sosa Zitto M, Köhler J, Piter J (2012) Embedding strength in joints of fast-growing Argentinean Eucalyptus grandis with dowel-type fasteners. Analysis according to the criterion adopted by European standards. Eur Wood Prod 70:433–440CrossRef
Vreeswijk B (2003) Timber joints using hardwood species. Master thesis. Faculty of Civil Engineering, Delft University of Technology, Delft, The Netherlands
Whale LRJ, Smith I (1986a) The derivation of design clauses for nailed and bolted joints in Eurocode 5. In: CIB-W18 Meeting 19 Paper 19-7-6, Florence, Italy
Whale LRJ, Smith I (1986b) Mechanical joints in structural timber -Information for probabilistic design. Technical report, report 17/86, TRADA, High Wycombe, UK
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Metadaten
Titel
Embedment tests parallel-to-grain and ductility aspects using various wood species
verfasst von
C. Sandhaas
G. J. P. Ravenshorst
H. J. Blass
J. W. G. van de Kuilen
Publikationsdatum
01.09.2013
Verlag
Springer Berlin Heidelberg
Erschienen in
European Journal of Wood and Wood Products / Ausgabe 5/2013
Print ISSN: 0018-3768
Elektronische ISSN: 1436-736X
DOI
https://doi.org/10.1007/s00107-013-0718-z

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