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Load carrying capacity of curved glulam beams reinforced with self-tapping screws

Jönsson, Johan LU (2005) In European Journal of Wood and Wood Products 63(5). p.342-346
Abstract
The aim of this research was to determine the load carrying capacity of curved glulam beams reinforced perpendicular to grain and subjected to climate induced internal stresses. The self-tapping screws used as reinforcement prevent the glulam to split along the grain causing failure perpendicular to grain. Different tests were performed; specimens seasoned in dry and moist climate, specimens exposed to single climate change and reinforced specimens seasoned in a dry and moist climate. Specimens without reinforcement where tested to failure and then reinforced and tested again. From the tests it can be concluded that reinforcement improves the capacity of the beam in some cases up to 50% compared to unreinforced beams. The effect of... (More)
The aim of this research was to determine the load carrying capacity of curved glulam beams reinforced perpendicular to grain and subjected to climate induced internal stresses. The self-tapping screws used as reinforcement prevent the glulam to split along the grain causing failure perpendicular to grain. Different tests were performed; specimens seasoned in dry and moist climate, specimens exposed to single climate change and reinforced specimens seasoned in a dry and moist climate. Specimens without reinforcement where tested to failure and then reinforced and tested again. From the tests it can be concluded that reinforcement improves the capacity of the beam in some cases up to 50% compared to unreinforced beams. The effect of moisture gradients on the capacity is significant and the worst case is when the beams are in a moistening phase. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
European Journal of Wood and Wood Products
volume
63
issue
5
pages
342 - 346
publisher
Springer
external identifiers
  • wos:000233035000005
  • scopus:26444516051
ISSN
0018-3768
DOI
10.1007/s00107-005-0016-5
language
English
LU publication?
yes
id
45f5d6a4-db8a-4eb3-915b-9d41eccaf53f (old id 213880)
date added to LUP
2007-08-16 14:04:41
date last changed
2017-09-03 03:45:56
@article{45f5d6a4-db8a-4eb3-915b-9d41eccaf53f,
  abstract     = {The aim of this research was to determine the load carrying capacity of curved glulam beams reinforced perpendicular to grain and subjected to climate induced internal stresses. The self-tapping screws used as reinforcement prevent the glulam to split along the grain causing failure perpendicular to grain. Different tests were performed; specimens seasoned in dry and moist climate, specimens exposed to single climate change and reinforced specimens seasoned in a dry and moist climate. Specimens without reinforcement where tested to failure and then reinforced and tested again. From the tests it can be concluded that reinforcement improves the capacity of the beam in some cases up to 50% compared to unreinforced beams. The effect of moisture gradients on the capacity is significant and the worst case is when the beams are in a moistening phase.},
  author       = {Jönsson, Johan},
  issn         = {0018-3768},
  language     = {eng},
  number       = {5},
  pages        = {342--346},
  publisher    = {Springer},
  series       = {European Journal of Wood and Wood Products},
  title        = {Load carrying capacity of curved glulam beams reinforced with self-tapping screws},
  url          = {http://dx.doi.org/10.1007/s00107-005-0016-5},
  volume       = {63},
  year         = {2005},
}