Požarna odpornost zaščitenih in nezaščitenih jeklenih stebrov, izpostavljenih lokaliziranemu požaru
| Autor: | Jelušić, Danijel |
|---|---|
| Přispěvatelé: | Hozjan, Tomaž |
| Jazyk: | slovinština |
| Rok vydání: | 2023 |
| Předmět: |
master thesis
localised fire performance based fire engineering odzivno požarno inženirstvo fire resistance adiabatic surface temperature lokaliziran požar magistrska dela požarna odpornost GR požarna zaščita adiabatna temperatura površine fire protection udc:614.84:624.014.2(043.3) gradbeništvo civil engineering |
| Popis: | EN 1993-1-2. Za hiter in enostaven inženirski izračun kritične temperature stebra je uporabljeno orodje reševalnik, ki je sestavni del programske opreme Microsoft Excel. Za določitev razvoja temperature jeklenega stebra in toplotnega toka v primeru lokaliziranega požara je uporabljeno programsko orodje OZone 3. Lokaliziran požar je definiran na podlagi RHR-krivulje v odvisnosti od časa in je določen v skladu z Evrokod standardom SIST EN 1991-1-2. Program OZone 3 ne omogoča izračuna razvoja temperature zaščitenega jeklenega profila, zato je bila skladno z znanstveno literaturo v ta namen vpeljana adiabatna temperatura površine AST (Adiabatic Surface Temperature). Na podlagi te je izpeljana enačba temperaturnega ravnovesja, s katero se določi temperatura plinov v neposredni okolici stebra in posledično tudi temperatura v zaščitenem jeklenem elementu. The master’s thesis presents a fire analysis procedure for steel column exposed to localised fire by using advanced calculation methods. The HEA 600 column in question is a vertical load-bearing element of the two-member cross-frame in a single-storey industrial hall made of steel. The thesis only provides an analysis of a columns’s fire resistance according to the Eurocode standard SIST EN 1993-1-2. For a quick and simple engineering calculation of the columns’s critical temperature, a solver tool that is part of the Microsoft Excel software was used. The OZone 3 software tool was used to determine the evolution of steel column temperature and heat flux in the event of a localised fire. A localised fire was defined based on the RHR curve in relation to time and determined according to the Eurocode standard SIST EN 1991-1-2. As OZone 3 does not allow the temperature evolution of a protected steel section to be calculated, adiabatic surface temperature (AST) was introduced for this purpose according to the scientific literature. Based on this, a temperature equilibrium equation was derived in order to determine the temperature of gases in the immediate vicinity of the column and in turn the temperature in the protected steel element. |
| Databáze: | OpenAIRE |
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