Effect of moisture induced stresses on the mechanical performance of glulam beams of Vihanyasalmi bridge

Petr Hradil, Stefania Fortino, Lauri Salokangas, Alessandro Musci, Giovanni Metelli

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

Abstract

The present paper deals with the effect of moisture induced stresses (MIS) on the mechanical performance of a glulam beam of Vihantasalmi Bridge in Finland. MIS caused by high moisture gradients in a cross section of the glulam beam are calculated by a hygro-thermal multi-Fickian model for evaluation of moisture content, relative humidity and temperature in wood that is sequentially coupled with an orthotropic-viscoelastic-mechanosorptive model for calculation of wood stresses. Both models, already developed in Abaqus FEM code by some of the authors in their previous works, had to be modified for the Nordic climate. The obtained levels of MIS are then compared to the Eurocode 5 design resistances. The study aims at providing suggestions to future developments of Eurocode 5 for the correct evaluation of the influence of moisture content on service life in timber bridge elements.
Original languageEnglish
Title of host publicationWCTE 2016 - World Conference on Timber Engineering
PublisherVienna University of Technology
Number of pages9
ISBN (Electronic)978-390303900-1
ISBN (Print)978-3-903024-35-9
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

Fingerprint

Moisture
Wood
Timber
Service life
Atmospheric humidity
Finite element method
Temperature

Keywords

  • timber bridges
  • monitoring
  • moisture induced stresses
  • Eurocode 5
  • ProperTune

Cite this

Hradil, P., Fortino, S., Salokangas, L., Musci, A., & Metelli, G. (2016). Effect of moisture induced stresses on the mechanical performance of glulam beams of Vihanyasalmi bridge. In WCTE 2016 - World Conference on Timber Engineering Vienna University of Technology.
Hradil, Petr ; Fortino, Stefania ; Salokangas, Lauri ; Musci, Alessandro ; Metelli, Giovanni. / Effect of moisture induced stresses on the mechanical performance of glulam beams of Vihanyasalmi bridge. WCTE 2016 - World Conference on Timber Engineering. Vienna University of Technology, 2016.
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Hradil, P, Fortino, S, Salokangas, L, Musci, A & Metelli, G 2016, Effect of moisture induced stresses on the mechanical performance of glulam beams of Vihanyasalmi bridge. in WCTE 2016 - World Conference on Timber Engineering. Vienna University of Technology, 2016 World Conference on Timber Engineering, WCTE 2016, Vienna, Austria, 22/08/16.

Effect of moisture induced stresses on the mechanical performance of glulam beams of Vihanyasalmi bridge. / Hradil, Petr; Fortino, Stefania; Salokangas, Lauri; Musci, Alessandro; Metelli, Giovanni.

WCTE 2016 - World Conference on Timber Engineering. Vienna University of Technology, 2016.

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

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T1 - Effect of moisture induced stresses on the mechanical performance of glulam beams of Vihanyasalmi bridge

AU - Hradil, Petr

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AB - The present paper deals with the effect of moisture induced stresses (MIS) on the mechanical performance of a glulam beam of Vihantasalmi Bridge in Finland. MIS caused by high moisture gradients in a cross section of the glulam beam are calculated by a hygro-thermal multi-Fickian model for evaluation of moisture content, relative humidity and temperature in wood that is sequentially coupled with an orthotropic-viscoelastic-mechanosorptive model for calculation of wood stresses. Both models, already developed in Abaqus FEM code by some of the authors in their previous works, had to be modified for the Nordic climate. The obtained levels of MIS are then compared to the Eurocode 5 design resistances. The study aims at providing suggestions to future developments of Eurocode 5 for the correct evaluation of the influence of moisture content on service life in timber bridge elements.

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KW - monitoring

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KW - ProperTune

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Hradil P, Fortino S, Salokangas L, Musci A, Metelli G. Effect of moisture induced stresses on the mechanical performance of glulam beams of Vihanyasalmi bridge. In WCTE 2016 - World Conference on Timber Engineering. Vienna University of Technology. 2016