The local bearing capacity perpendicular to grain of structural timber elements

Leijten, A.J.M.; Jorissen, A.J.M.; Leijer, B.J.C. de

doi:10.1016/j.conbuildmat.2011.07.022

Cited by 21 publications

(10 citation statements)

References 6 publications

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“…1, previous models did not provide any guidance for the design engineer. In [10] it was shown that for load cases G and H the depth of the spreading stresses is limited to a maximum of 140 mm or 40% of the beam depth, whichever is the smallest, Eq. (4)…”

Section: Design Models For Cpg Strength Capacitymentioning

confidence: 99%

“…In cases B to G, where the test specimen dimensions deviate from the standard specimen, the same method is employed to determine the CPG strength. The deformations are plotted in [mm] and not in percentages of the specimen depth, the reason being that in the loading categories G and H it is not the whole specimen depth which is affected by the CPG stresses, Leijten et al [10]. Furthermore, when the depth of the test specimen differs from the standard 90 mm, the 1% off-set line (2) is off-set 1% of the actual specimen depth.…”

Section: Load Casesmentioning

confidence: 99%

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The bearing strength capacity perpendicular to grain of norway spruce – Evaluation of three structural timber design models

Leijten

2016

Construction and Building Materials

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Link to publication Citation for published version (APA):Leijten, A. J. M. (2016). The bearing strength capacity perpendicular to grain of Norway spruce: Evaluation of three structural timber design models. Construction and Building Materials, 105, 528-535. DOI: 10.1016/j.conbuildmat.2015.12.170 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. t r a c tThe perpendicular to grain compressive strength of timber is known to be much lower than the strength parallel to grain. Many timber structures, however, rely on this property especially in bearings that occur frequently in building practice. The linear elastic-plastic behaviour of structural timber loaded perpendicular to grain has been a problematic issue for decades which is reflected in the differences between the prediction models in structural design codes over the world. This article concentrates on the evaluation of the strength predictive ability of three of the latest bearing models having an empirical, semiempirical or physical background. On the bases of a large database of over 1000 test results covering eight practical load cases, it is shown that the accuracy and consistency of the physical model is the best, which makes it a potential candidate for the new generation timber design codes.

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Section: Design Models For Cpg Strength Capacitymentioning

confidence: 99%

Section: Load Casesmentioning

confidence: 99%

The bearing strength capacity perpendicular to grain of norway spruce – Evaluation of three structural timber design models

Leijten

2016

Construction and Building Materials

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“…The vertical displacement is recorded using an LVDT transducer without observing the distribution area or the loaded volume in the vicinity of support areas. In reality, for a bending test, the compressive stress perpendicular to the grain presents a non-uniform gradient along its height, as given by Leijten et al (2012). As a result of these considerations, the current study must integrate the bending state.…”

Section: Compression and Bending Testsmentioning

confidence: 99%

Spreading of transverse compressive stresses in glued laminated timber

Lathuillière

Pop²,

Bléron³

et al. 2015

Eur. J. Wood Prod.

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This paper presents a new approach for understanding localized compressive behavior perpendicular to the grain based on beams subjected to three-point bending. It was intended to take into account the coupling between compressive stresses perpendicular to the grain due to support reactions and shear stresses. To validate this, model, results of compression tests have been examined. The digital image correlation (DIC) method has been applied in order to analyze the deformation fields in support areas. The tests allow confirming the presence of spreading effect in the vicinity of support areas according to the DIC method. An analytical formulation has therefore been proposed to quantify distribution versus increasing compressive strength perpendicular to the grain, including shear effects. A scale effect and support conditions have also been highlighted using three different geometries and two types of tests.

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“…Un ejemplo de ello se encuentra en las estructuras de madera, usadas principalmente en Estados Unidos y Canadá, formadas por marcos ligeros donde se coloca una carrera de madera entre las vigas de piso y los elementos verticales en los que descansan (Leijten et al 2012). …”

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Análisis experimental del comportamiento mecánico de elementos de madera de pino silvestre de pequeña escuadría sometidos a compresión transversal a las fibras = Experimental analysis of the mechanical behavior of small squad pine wood elements subjected to cross-fiber compression

Llauradó

González

García

et al. 2016

ADE

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Resumen-En numerosos detalles estructurales de construcciones realizadas con madera, el esfuerzo de compresión transversal a las fibras juega un papel muy importante y en muchas ocasiones condiciona su diseño. En este trabajo se analiza el comportamiento a compresión de piezas de madera de pino silvestre de pequeña escuadría sometidas a un esfuerzo de compresión transversal a las fibras y se han obtenido unos valores medios para la tensión de rotura y el módulo de elasticidad de 4,20 MPa y 305,86 MPa, respectivamente.Palabras clave-Madera; construcción; esfuerzo de compresión; deformación.Abstract-In many structural details of buildings made of wood, the transverse compression stress to the fibers plays a very important role and often determines its design. In this work, the compression behavior of small pine wood pieces subjected to a cross -compressive stress to the fibers is analyzed and mean values for the tensile strength and the modulus of elasticity of 4,20 MPa and 305.86 MPa, respectively.

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The local bearing capacity perpendicular to grain of structural timber elements

Cited by 21 publications

References 6 publications

The bearing strength capacity perpendicular to grain of norway spruce – Evaluation of three structural timber design models

The bearing strength capacity perpendicular to grain of norway spruce – Evaluation of three structural timber design models

Spreading of transverse compressive stresses in glued laminated timber

Análisis experimental del comportamiento mecánico de elementos de madera de pino silvestre de pequeña escuadría sometidos a compresión transversal a las fibras = Experimental analysis of the mechanical behavior of small squad pine wood elements subjected to cross-fiber compression

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