Požarna odpornost vitkih lesenih stebrov in vpliv parametrov na njihovo nosilnost pri izpostavljenosti požaru

Velić, Lejla (author), Schnabl, Simon (mentor)

Magistrsko delo obravnava požarno odpornost vitkih lesenih stebrov ter vpliv različnih parametrov na njihovo obnašanje pri požarni izpostavljenosti. Posebna pozornost je namenjena vplivu povišanih temperatur, termične degradacije in zoglenitve lesa na njegove mehanske lastnosti ter konstrukcijsko stabilnost. Raziskovalni del temelji na numeričnem modeliranju v programu SAFIR in zaporedni termomehanski analizi pri standardni požarni izpostavljenosti po krivulji ISO 834. S parametrično raziskavo je bil ovrednoten vpliv dimenzij prereza, dolžine stebra in intumescentne zaščite na konstrukcijski odziv. Rezultati prispevajo k boljšemu razumevanju termomehanskega obnašanja vitkih lesenih stebrov ter dejavnikov, ki vplivajo na ohranjanje njihove stabilnosti in nosilnosti med požarom.

• Language: Slovenian
• Keywords: požarna varnost, lesene konstrukcije, vitki leseni stebri, požarna odpornost, Evrokod 5
• Work type: Master's thesis/paper
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Year: 2026
• PID: 20.500.12556/RUL-186620
• Publication date in RUL: 03.09.2026

Secondary language

• Language: English
• Title: Fire performance of slender timber columns and influence of parameters on their load-bearing capacity when exposed to fire

Abstract

The master’s thesis examines the fire resistance of slender timber columns and the influence of various parameters on their behaviour under fire exposure. Particular attention is given to the effects of elevated temperatures, thermal degradation, and timber charring on its mechanical properties and structural stability. The research is based on numerical modelling using the SAFIR software and sequential thermomechanical analysis under standard fire exposure according to the ISO 834 fire curve. A parametric study was conducted to evaluate the influence of cross-sectional dimensions, column length, and intumescent protection on the structural response. The results contribute to a better understanding of the thermomechanical behaviour of slender timber columns and the factors affecting the preservation of their stability and load-bearing capacity during fire.

• Keywords: fire safety, timber structures, slender timber columns, fire resistance, Eurocode 5