Damage Assessment and Residual Service Life Estimation of Cracked Timber Beams

Jan Willem G. van de Kuilen; Wolfgang Gard

doi:10.4028/www.scientific.net/AMR.778.402

Paper Titles

Modulus of Elasticity and Bending Strength of Squared Timber with Wane of Spruce and Larch
p.369

Strength Properties of Chestnut Structural Timber with Wane
p.377

Non-Destructive and Semi-Destructive Test Methods for Strength Determination of Aged Wood
p.385

The Influence of Routed Grooves on the Bending Behavior of Old Timber Beams
p.393

Damage Assessment and Residual Service Life Estimation of Cracked Timber Beams
p.402

Evaluation of the Load-Carrying Capacity in Bending of Large Cross Section “Pitch Pine” Beams in Standing Structures
p.410

The SWORFISH Project Approach for Modeling Wood Material Modifications in Timber Structures
p.418

Assessment of the Glue-Line Quality in Glued Laminated Timber Structures
p.424

Determination of the Stress Distribution in Timber Elements Reinforced with Self-Tapping Screws Using an Optical Metrology System
p.432

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 778Damage Assessment and Residual Service Life...

Damage Assessment and Residual Service Life Estimation of Cracked Timber Beams

Abstract:

Service life modelling of cracked timber beams can be performed using modified damage accumulation models that describe the combined effect or long term loads (mechanical) and biological of physical wood degradation. The combined model allows for the estimation of residual service life and an analysis of crack development. The model can also be used to analyse safety factors that may need to be applied. Also, a sensitivity analysis can be performed for future risks. It is shown that the failure risk is very sensitive to the level of the applied loads, similar to time to failure analysis of non-degraded timber. Failure in timber structures occurs within a very short time frame. A practical case of cracked glulam beams is included in the paper.

You might also be interested in these eBooks

Structural Health Assessment of Timber Structures

View Preview

Info:

Periodical:

Advanced Materials Research (Volume 778)

Pages:

402-409

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.778.402

Citation:

Cite this paper

Online since:

September 2013

Authors:

Jan Willem G. van de Kuilen, Wolfgang Gard

Keywords:

Crack, Damage Accumulation, Degradation, Residual Strength Models, Safety Factor, Service Life

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] P. Frech, Beurteilungskriterien für Rissbildungen bei Bauholz im konstruktiven Holzbau. Baune mit Holz 89, 582-585, 1987 (in German).

Google Scholar

[2] A.S. Krausz, H. Eyring, Deformation Kinetics, John Wiley and Sons, (1975).

Google Scholar

[3] D.F. Caulfield, A chemical kinetics approach to the duration of load problem in wood. Wood and Fibre Science 17(4), 504-521.

Google Scholar

[4] T.A.C.M. van der Put, A model of deformation and damage processes based on the reaction kinetics of bond exchange. Paper 19-9-3, CIB/IUFRO meeting 1986, Florence, Italy.

Google Scholar

[5] C.C. Gerhards, Time related effects on wood strength, Wood and Fibre Science 23(1), 89-98, (1992).

Google Scholar

[6] R.O. Foschi, B.R. Folz, Z. C Yao, Reliability based design of wood structures, Report. No. 34, Dept. Civil Eng. UBC, Vancouver, Canada, (1989).

Google Scholar

[7] J. Kuipers, Effect of Age and/or Load on Timber Strength – CIB-W18 paper 19-6-1, Florence, Italy, (1986).

Google Scholar

[8] J-W.G. van de Kuilen, Reliability assessment of timber structures, COST C5 Conference Urban Heritage - Maintenance and strengthening of materials and structures – Wooden structures,. pp.55-63, 19-21 September 2000, ETH Zürich, Switzerland.

Google Scholar

[9] J.W.G. van de Kuilen, Service life modelling of timber structures, Materials & Structures 40, 2007. DOI 10. 1617/s11527-006-9158-0.

Google Scholar

[10] JCSS Probabilistic Model Code, ISBN 978-3-909386-79-6.

Google Scholar

[11] EN 1990 - Eurocode: Basis of Structural Design.

Google Scholar

[12] ISO 2394 - General principles on reliability for structures.

Google Scholar

[13] J.W.G. van de Kuilen, Duration of load effects in timber joints, Ph.D. thesis 1999, Delft University of Technology, the Netherlands.

Google Scholar

[14] D.V. Rosowsky, W.M., Bulleit, Load duration effects in wood members and connections: order statistics and critical loads, Structural Safety, Vol. 24. 2-4. pp.347-362.

DOI: 10.1016/s0167-4730(02)00031-0

Google Scholar