A new numerical model for analysing timber-concrete composite beams under fire conditions

Pečenko, Robert (author), Hozjan, Tomaž (author), Huč, Sabina (author)

This article presents a new numerical model for the analysis of timber-concrete composite beam exposed to fire. The model is based on a detailed mathematical and physical description of the problem. It accounts for the exact geometrical and material non-linear behaviour of each layer and incorporates a flexible connection between the layers, which is temperature dependent. The numerical model has been validated against experimental results from literature and proven to be accurate. In addition, the numerical formulation has been found to be reliable and computationally efficient. Further parametric studies revealed significant impact of modelling flexible and temperature dependent connection between concrete and timber on the mechanical response of the beam.

• Language: English
• Keywords: timber-concrete composite, fire, numerical modelling, thermo-mechanical analysis, slip
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FGG - Faculty of Civil and Geodetic Engineering; FKKT - Faculty of Chemistry and Chemical Technology
• Publication status: Published
• Publication version: Version of Record
• Year: 2025
• Number of pages: 8 str.
• Numbering: Vol. 75, art. 108575
• PID: 20.500.12556/RUL-168317
• UDC: 691:519.62:531
• ISSN on article: 2352-0124
• DOI: 10.1016/j.istruc.2025.108575
• COBISS.SI-ID: 231909123
• Publication date in RUL: 09.04.2025

Record is a part of a journal

• Title: Structures
• Publisher: Elsevier, Institution of Structural Engineers
• ISSN: 2352-0124
• COBISS.SI-ID: 525573145

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: lesno-betonski kompoziti, požar, numerično modeliranje, termo-mehanska analiza, zdrs