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

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Author

  • Johan Jönsson

Summary, in English

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.

Publishing year

2005

Language

English

Pages

342-346

Publication/Series

European Journal of Wood and Wood Products

Volume

63

Issue

5

Document type

Journal article

Publisher

Springer

Topic

  • Building Technologies

Status

Published

ISBN/ISSN/Other

  • ISSN: 0018-3768