Požarna odpornost konstrukcijskih elementov iz nerjavečega jekla : diplomska naloga

Gomboši, Jana (author), Sinur, Franc (mentor)

V diplomski nalogi je predstavljeno obnašanje konstrukcijskih elementov iz nerjavnega jekla v primeru požara. Predstavljena so splošna pravila za požarnoodporno projektiranje jeklenih konstrukcij skladno s standardom SIST EN 1993-1-2. Na podlagi enostavnih računskih metod sledi izračun uklonske nosilnosti RHS stebra iz nerjavnega jekla, izpostavljenega standardnemu požaru. Vpliv povišanih temperatur se upošteva z zmanjšanjem napetosti na meji tečenja in modulom elastičnosti jekla. V nadaljevanju sledi primerjava mehanskih in toplotnih lastnosti ter obnašanje nerjavnega in ogljikovega jekla na primeru RHS stebra iz nerjavnega jekla trdnostnega razreda 1.4301 in ogljikovega jekla S235. V sklopu evropskih raziskav za obnašanje hladno oblikovanega nerjavnega jekla v primeru požara so razvili novejše metode za izračun uklonske nosilnosti tlačno obremenjenih konstrukcijskih elementov s kompaktnimi in vitkimi prečnimi prerezi. Raziskave iz projekta in primerjava različnih metod so predstavljene na koncu diplomske naloge.

• Language: Slovenian
• Keywords: gradbeništvo, diplomska dela, UNI, B-GR, nerjavno jeklo, požarna odpornost, uklonska nosilnost
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Place of publishing: Ljubljana
• Publisher: [J. Gomboši]
• Year: 2015
• Number of pages: VIII, 29 str.
• PID: 20.500.12556/RUL-72758
• COBISS.SI-ID: 7183969
• Publication date in RUL: 30.09.2015

Secondary language

• Language: English
• Title: Fire resitance of stainless steel structural elements

Abstract

Graduation thesis represents behavior of structural elements made from stainless steel in case of fire. The general rules according to the European standard SIST EN 1993-1-2 to determine design resistance of the steel structural element for fire conditions are presented. The main focus was to determinate behavior of stainless steel column exposed to the standard fire. Buckling resistance of the column was calculated with a simplified method from the standard SIST EN 1993-1-2. Mechanical and thermal properties of the stainless steel were compared to the carbon steel. The structural performance of the stainless steel RHS column from grade 1.4301 and carbon steel column from grade S235 was studied. Stainless steel tends to be stronger and stiffer at temperatures which are higher than 500°C. Behavior of the cold worked stainless steel in fire was analyzed within European research project. In this project new methods for structural fire resistant design were invented, which are also represented at the end of this thesis.

• Keywords: graduation thesis, civil engineering, stainless steel, fire resistance, buckling resistance