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Stress-Laminated Timber Decks Subjected to Eccentric Loads in the Ultimate Limit State

Ekholm, K.; Crocetti, Roberto LU and Kliger, R. (2013) In Journal of Bridge Engineering 18(5). p.409-416
Abstract
Stress-laminated timber (SLT) bridge decks are generally designed using either linear hand calculation methods or linear finite-element models. Several studies have shown, however, that the behavior of SLT decks is nonlinear when loaded until failure. In this paper, several linear design methods are compared with one another and with an ultimate load test of a full-scale SLT deck subjected to an eccentric load. Some of the linear hand calculation methods show significant discrepancies in results, depending on the load position. There are also variations in the results from finite-element models, depending on the material properties assigned to the deck. All the design methods failed to predict the deflection of the tested deck when loaded... (More)
Stress-laminated timber (SLT) bridge decks are generally designed using either linear hand calculation methods or linear finite-element models. Several studies have shown, however, that the behavior of SLT decks is nonlinear when loaded until failure. In this paper, several linear design methods are compared with one another and with an ultimate load test of a full-scale SLT deck subjected to an eccentric load. Some of the linear hand calculation methods show significant discrepancies in results, depending on the load position. There are also variations in the results from finite-element models, depending on the material properties assigned to the deck. All the design methods failed to predict the deflection of the tested deck when loaded to failure. A larger deflection was observed in the full-scale test than that predicted by the design methods. As a result, the linear design method could underestimate the bending stresses in the deck. Several hand calculation methods are also unable to calculate the transverse forces and moments necessary for design according to Eurocode 5. DOI: 10.1061/(ASCE)BE.1943-5592.0000375. (C) 2013 American Society of Civil Engineers. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Stress-laminated timber deck, Ultimate limit state modeling, Timber, bridges, Eccentric plate loads
in
Journal of Bridge Engineering
volume
18
issue
5
pages
409 - 416
publisher
American Society of Civil Engineers (ASCE)
external identifiers
  • wos:000317423700008
  • scopus:84876211868
ISSN
1943-5592
DOI
10.1061/(ASCE)BE.1943-5592.0000375
language
English
LU publication?
yes
id
01a6d018-6c13-4a7b-983c-40d4cade33e4 (old id 3739000)
date added to LUP
2013-05-22 13:24:19
date last changed
2019-02-20 01:39:15
@article{01a6d018-6c13-4a7b-983c-40d4cade33e4,
  abstract     = {Stress-laminated timber (SLT) bridge decks are generally designed using either linear hand calculation methods or linear finite-element models. Several studies have shown, however, that the behavior of SLT decks is nonlinear when loaded until failure. In this paper, several linear design methods are compared with one another and with an ultimate load test of a full-scale SLT deck subjected to an eccentric load. Some of the linear hand calculation methods show significant discrepancies in results, depending on the load position. There are also variations in the results from finite-element models, depending on the material properties assigned to the deck. All the design methods failed to predict the deflection of the tested deck when loaded to failure. A larger deflection was observed in the full-scale test than that predicted by the design methods. As a result, the linear design method could underestimate the bending stresses in the deck. Several hand calculation methods are also unable to calculate the transverse forces and moments necessary for design according to Eurocode 5. DOI: 10.1061/(ASCE)BE.1943-5592.0000375. (C) 2013 American Society of Civil Engineers.},
  author       = {Ekholm, K. and Crocetti, Roberto and Kliger, R.},
  issn         = {1943-5592},
  keyword      = {Stress-laminated timber deck,Ultimate limit state modeling,Timber,bridges,Eccentric plate loads},
  language     = {eng},
  number       = {5},
  pages        = {409--416},
  publisher    = {American Society of Civil Engineers (ASCE)},
  series       = {Journal of Bridge Engineering},
  title        = {Stress-Laminated Timber Decks Subjected to Eccentric Loads in the Ultimate Limit State},
  url          = {http://dx.doi.org/10.1061/(ASCE)BE.1943-5592.0000375},
  volume       = {18},
  year         = {2013},
}