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A multi-Fickian hygro-thermal model for timber bridge elements under Northern Europe climates
VTT Technical Research Centre of Finland Ltd, Finland.
VTT Technical Research Centre of Finland Ltd, Finland.
University of Calabria, Italy; University of Roma Tre, Italy.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Hållbar Samhällsbyggnad, Träbyggande och boende.
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2016 (English)Conference paper, Presentation (Other academic)
Abstract [en]

This work proposes a multi-Fickian method to analyse the hygro-thermal behaviour of timber bridge elements under Northern Europe climates. A temperature-dependent wood hysteresis is included in the model and the thermal effects due to temperatures above and below zero are taken into account. As a case study, the model is used for the hygro-thermal simulation of a glulam beam of Älsvbacka bridge in North of Sweden that was monitored by using wireless sensors in a previous study. The model, implemented in Abaqus FEM code, is able to predict the states of moisture and temperature in protected parts of the beam by using as external loads the relative humidity and temperature of the air provided by in-situ measurements. Furthermore a simplified model using a wood hysteresis independent of temperature is found to provide similar results and appears easier to implement in finite element codes.

Place, publisher, year, edition, pages
2016.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-16282OAI: oai:DiVA.org:ri-16282DiVA: diva2:1038651
Conference
World Conference on timber engineering (WCTE 2016). Vienna, Austria. 22-25 August, 2016.
Available from: 2016-10-19 Created: 2016-10-19 Last updated: 2016-10-19Bibliographically approved

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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More styles
Language
  • de-DE
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  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
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  • asciidoc
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