Strength modelling of Laminated Veneer Lumber (LVL) beams.
Saved in:
| Title: | Strength modelling of Laminated Veneer Lumber (LVL) beams. |
|---|---|
| Authors: | Gilbert, Benoit P.1 b.gilbert@griffith.edu.au, Bailleres, Henri2 henri.bailleres@daf.qld.gov.au, Zhang, Hao3 hao.zhang@usyd.edu.au, Mcgavin, Robert L.2 robbie.mcgavin@daf.qld.gov.au |
| Source: | Construction & Building Materials. Sep2017, Vol. 149, p763-777. 15p. |
| Subjects: | Laminated veneer lumber, Wood veneers & veneering, Hardwood forests, Eucalyptus maculata, Monte Carlo method |
| Abstract: | This paper develops a mechanical model to accurately predict the strength of Laminated Veneer Lumber (LVL) beams, and illustrates its applications to numerically predict the strength distribution of LVL beams manufactured from veneers rotary peeled from early to mid-rotation subtropical hardwood plantation logs. This resource is not traditionally used in the manufacturing of commercialised LVL beams. In the first part of the paper, the model is described, calibrated against experimental results performed on 8-ply LVL beams and then verified against experimental results performed on 13-ply LVL beams. Results show that the model is able to accurately reproduce the experimental results, both on flat and edge bending, with an average prediction-to-experiment ratio of 1.0 and a relatively low coefficient of variation of 0.10. A sound prediction of the non-linear behaviour of the beams before failure was also observed. In the second part of the paper illustrating the applications of the model, the mechanical properties of veneers analysed by the authors in a previous work are used as input values in the numerical model to predict the strength of six commercially available LVL beam sizes, manufactured from early to mid-rotation subtropical Gympie messmate ( Eucalyptus cloeziana ), spotted gum ( Corymbia citriodora ) and southern blue gum ( Eucalyptus globulus ) plantation veneers. The design strength (5th percentile) of the beams, obtained by Monte Carlo simulations, is reported and found to range from 32.3 MPa to 97.2 MPa, depending on the quality of the veneers used and the beam size. The LVL beams have design strengths comparable to, and in some cases up to 2.5 times higher than commercially available softwood LVL beams, making them attractive structural products. The strength variability is also reported in the paper for developing probability-based limit state design criteria in future studies. [ABSTRACT FROM AUTHOR] |
| Copyright of Construction & Building Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
Be the first to leave a comment!
