magistrsko delo št.: 266/II. GR
Danijel Jelušić (Author), Tomaž Hozjan (Mentor), Gregor Udovč (Co-mentor)

Abstract

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.

Keywords

gradbeništvo;magistrska dela;GR;požarna odpornost;lokaliziran požar;požarna zaščita;adiabatna temperatura površine;odzivno požarno inženirstvo;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [D. Jelušić]
UDC: 614.84:624.014.2(043.3)
COBISS: 139554051 Link will open in a new window
Views: 1851
Downloads: 124
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Other data

Secondary language: English
Secondary title: Fire resistance of protected and unprotected steel columns exposed to localised fire
Secondary abstract: 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.
Secondary keywords: civil engineering;master thesis;fire resistance;localised fire;fire protection;adiabatic surface temperature;performance based fire engineering;
Type (COBISS): Master's thesis/paper
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: XVI, 80 str.
ID: 17916516