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European Journal of Wood and Wood Products
Published in: European Journal of Wood and Wood Products 1/2011

01-02-2011 | Originals Originalarbeiten

Shear strength of glued laminated timber made from European beech timber

Authors: Simon Aicher, Denny Ohnesorge

Published in: European Journal of Wood and Wood Products | Issue 1/2011

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Abstract

This paper describes an investigation into the shear strength of glued laminated timber (GLT) made from European beech. Special consideration was paid to the possible strength influence of a frequently occurring discolouration of the timber, termed red heartwood, which is inherent to the species. The beech lamellae were visually graded according to German hardwood grading standard DIN 4074-5. Grade LS13, conforming to European hardwood strength class D40, was split into two sub-grades LS13− and LS13+. Additionally, modulus of elasticity (MOE) was determined by ultrasound pulse, longitudinal vibration and static tension tests. Sub-grade LS13+ showed a mean density and MOE of 690 kg/m3 and 14,800 N/mm2, respectively.
The GLT shear strength was evaluated by means of four-point bending tests on structural sized I-shaped beams with a depth of 0.6 m and a span to depth ratio of 5:1. The slightly inhomogeneous build-up of the cross-section conformed to glulam strength class GL42c. Two beam samples were investigated, each with seven specimens, where one grouping had no red heartwood and the other with a high red heartwood in the web laminations. Additionally block shear tests on bond line strength were performed with standardized small specimens according to EN 392.
Neither the beam shear capacity tests nor the bond line block shear tests revealed an influence of the red heartwood discolouration on strength. The fifth-percentile value of shear strength of all beams was 3.5 N/mm2. The results of the block shear tests indicate that the present requirements on minimum block shear strength are set too low in the European standard EN 386 with regard to beech GLT.
previous article Embedment tests perpendicular to the grain – optical measurements of deformation fields
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Literature
ASTM D2555 (2006) Standard practice for establishing clear wood strength values. ASTM International, West Conshohocken, PA. doi:10.​1520/​D2555-06
ASTM D2915 (2003) Standard practice for evaluating allowable properties for grades of structural lumber, West Conshohocken, PA. doi:10.​1520/​D2915-03
ASTM D3737 (2008) Standard practice for establishing allowable properties for structural glued laminated timber (Glulam). ASTM International, West Conshohocken, PA. doi:10.​1520/​D3737-08
DIBt (2009) Allgemeine Bauaufsichtliche Zulassung Z-9.1-679; Zulassungsgegenstand: BS-Holz aus Buche und BS-Holz Hybridträger. Antragsteller: Studiengemeinschaft Holzleimbau e.V., Wuppertal
DIN 1052 (2008) Design of timber structures—general rules and rules for buildings
DIN 4074-5 (2003) Strength grading of wood—part 5: sawn hardwood
EN 13183-1 (2002) Moisture content of a piece of sawn timber—part 1: determination by oven dry method
EN 1995-1-1/A1 (2004/2008) Eurocode 5—design of timber structures—part 1-1: General—common rules and rules for buildings
EN 301 (2006) Adhesives, phenolic and aminoplastic, for load-bearing timber structures—classification and performance requirements
EN 386 (2001) Glued laminated timber—performance requirements and minimum production requirements
EN 392 (1995) Glued laminated timber—shear tests of glue lines
EN 408 (2003) Timber structures—structural timber and glued laminated timber—determination of some physical and mechanical properties
HKS (1969) Gesetz über gesetzliche Handelsklassen für Rohholz vom 25. Februar 1969. BGBI. I S.149. Gesetzliche Handelsklassensortierung für Rohholz mit Ergänzungsbestimmungen für Baden-Württemberg, vom 1.10.1983
ISO 3131 (1975) Wood—determination of density for physical and mechanical tests
Aicher S, Reinhardt HW (2007) Delamination properties and shear strength of glued beech wood laminations with red heartwood. Holz Roh Werkst 64:125–136 CrossRef
Aicher S, Höfflin L, Behrens W (2001) A study on tension strength of finger joints in beech wood laminations. Otto-Graf-J 12:169–186
Bernasconi A (2004) Verleimung von Laubholz für den tragenden Einsatz. Schweiz Z Forstwiss 155(12):533–539
BlaßHJ, Denzler J, Frese M, Glos P, Linsenmann P (2005) Biegefestigkeit von Brettschichtholz aus Buche. Forschungsbericht Versuchsanstalt Stahl, Holz und Steine, Abt Ingenieurholzbau, Universität TH Karlsruher Berichte Ingenieurholzbau, Bd 1, Universitätsverlag Karlsruhe
Egner K, Kolb H (1966) Geleimte Träger und Binder aus Buchenholz. Bauen mit Holz 68(4):147–154
Frese M (2006) Die Biegefestigkeit von Brettschichtholz aus Buche—experimentelle und numerische Untersuchungen zum Laminierungseffekt. Diss, Karlsruher Berichte Ingenieurholzbau, Bd 5, Universitätsverlag Karlsruhe
Frese M, BlaßHJ (2005) Beech glulam strength classes. Int council for research and innovation in building and construction. Working commission W18—timber structures. Proc meeting 38, paper CIB-W18/38-6-2, Karlsruhe, Germany
Frühwald A, Ressel J, Bernasconi A, Becker P, Pitzner B, Wonnemann R, Mantau U, Sörgel C, Thoroe C, Dieter M, Englert H (2003) Hochwertiges Brettschichtholz aus Buchenholz. Res Rep Bundesforschungsanstalt für Forst- und Holzwirtschaft, Hamburg
Gehri E (1980) Möglichkeiten des Einsatzes von Buchenholz für Tragkonstruktionen. Schweizer Bauwirtsch 56:17–21
Gehri E (1985) High performance jointing techniques—state of art and development. Holz Roh- Werkst 43:83–88 (in German) CrossRef
Glos P, Lederer B (2000) Sortierung von Buchen- und Eichenschnittholz nach der Tragfähigkeit und Bestimmung der zugehörigen Festigkeits- und Steifigkeitswerte. Res Rep 98508, Holzforschung, Technische Universität München
Ilic J (2003) Dynamic MOE of 55 species using small wood beams. Holz Roh- Werkst 61:167–172
Jegley D, Williams J (1988) Multiple-span beam shear test for composite laminates. NASA-LAR-13605
Keenan FJ, Kryla J, Kyokong B (1985) Shear strength of spruce glued—laminated timber beams. Can J Civil Eng 12(3):661–672 CrossRef
Kolb H (1968) Biegeversuche und Prüfung des Brandverhaltens an Trägern aus verleimten Buchenschälfurnieren. Holz Roh- Werkst 26:277–283 CrossRef
Korin U (1996) Determination of the shear strength of timber. In: Proc Int Wood Eng Conf 96, vol 2, New Orleans, USA, pp 91–95
Lam F, Yee H, Barrett JD (1995) Shear strength of Canadian softwood structural lumber. In: Int council for research and innovation in building and construction. Working commission W18—timber structures. Proc meeting 28, Paper CIB-W18/28-6-1, Copenhagen, Denmark
Ohnesorge D, Richter K, Seeling U (2006) Glueability of Beech wood containing red heartwood. In: Proc 5th int symp wood structure and properties, Sliac—Sielnica, Slovakia
Ohnesorge D, Richter K, Becker G, Aicher S (2008) Adhesion behaviour of glued laminated timber from European Beech. In: Proc conf COST E34 “Bonding of Timber—Enhancing bond line performance”, Sopron, Hungary
Pöhler E, Klingner R, Künniger T (2006) Beech (Fagus sylvatica L.)—technological properties, adhesion behaviour and colour stability with and without coatings of the red heartwood. Ann For Sci 63(2):129–137 CrossRef
Schickhofer G (2001) Determination of shear strength values for GLT using visual and machine graded spruce laminations. In: Int council for research and innovation in building and construction. Working commission W18—Timber structures. Proc meeting 34, paper CIB-W18/34-12-6, Venice, Italy
Schickhofer G, Obermayr B (1998) Development of an optimized test configuration to determine shear strength of glued laminated timber. In: Int council for research and innovation in building and construction. Working commission W18—timber structures. Proc meeting 31, paper CIB-W18/31-21-1, Savonlinna, Finland
Soltis LA, Rammer DR (1994) Shear strength of unchecked glued-laminated beams. Forest Prod J 44(1):51–57
Yeh B, Williamson TG (2001) Evaluation of glulam shear strength using a fullsize four-point test method. In: Int council for research and innovation in building and construction. Working commission W18—timber structures. Proc meeting 34, paper CIB-W18/34-12-2, Venice, Italy
Metadata
Title
Shear strength of glued laminated timber made from European beech timber
Authors
Simon Aicher
Denny Ohnesorge
Publication date
01-02-2011
Publisher
Springer-Verlag
Published in
European Journal of Wood and Wood Products / Issue 1/2011
Print ISSN: 0018-3768
Electronic ISSN: 1436-736X
DOI
https://doi.org/10.1007/s00107-009-0399-9

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