A multi-Fickian hygro-thermal model for timber bridge elements under Northern Europe climatesShow others and affiliations
2016 (English)In: WCTE 2016: World Conference on Timber Engineering, 2016, p. 2068-2075Conference paper, Published paper (Refereed)
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. p. 2068-2075
Keywords [en]
FEM, Hygro-thermal models, Moisture, Monitoring, Timber bridges, Wood hysteresis
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-16282Scopus ID: 2-s2.0-85011004556ISBN: 978-3-903024-35-9 (electronic)OAI: oai:DiVA.org:ri-16282DiVA, id: diva2:1038651
Conference
World Conference on timber engineering (WCTE 2016), August 22-25, 2016, Vienna, Austria
2016-10-192016-10-192020-12-02Bibliographically approved