A multi-Fickian hygro-thermal model for timber bridge elements under Northern Europe climates

Stefania Fortino, Petr Hradil, Andrea Genoese, Alessandra Genoese, Anna Pousette, Per-Anders Fjellström

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    3 Citations (Scopus)

    Abstract

    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.
    Original languageEnglish
    Title of host publicationProceedings of WCTE 2016
    PublisherVienna University of Technology
    Number of pages8
    ISBN (Print)978-390303900-1
    Publication statusPublished - 2016
    MoE publication typeA4 Article in a conference publication
    Event2016 World Conference on Timber Engineering, WCTE 2016 - Vienna, Austria
    Duration: 22 Aug 201625 Aug 2016

    Conference

    Conference2016 World Conference on Timber Engineering, WCTE 2016
    Abbreviated titleWCTE 2016
    CountryAustria
    CityVienna
    Period22/08/1625/08/16

    Keywords

    • timber bridges
    • moisture
    • monitoring
    • wood hysteresis
    • hygro-thermal models
    • FEM
    • ProperTune

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