Sebastjan Bratina (Author), Bojan Čas (Author), Miran Saje (Author), Igor Planinc (Author)

Abstract

The paper describes a two-step finite element formulation for the thermo-mechanical non-linear analysis of the behaviour of the reinforced concrete columns in fire. In the first step, the distributions of the temperature over the cross-section during fire are determined. In the next step, the mechanical analysis is made in which these distributions are used as the temperature loads. The analysis employs our new strain-based planar geometrically exact and materially non-linear beam finite elements to model the column. The results are compared with the measurements of the full-scale test on columns in fire and with the results of the European building code EC 2. The resistance times of the present method and the test were close. It is also noted that the building code EC 2 might be non-conservative in the estimation of the resistance time. (c) 2005 Elsevier Ltd. All rights reserved.

Keywords

požarna odpornost;metoda končnih elementov;armiranobetonski stebri;temperaturna deformacija;lezenje;prehodna deformacija;Eurocode 2;fire resistance;finite element method;reinforced concrete column;thermal strain;creep strain;transient strain;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: Elsevier
UDC: 006(4):614.84:624.012.45:624.075.2
COBISS: 2813793 Link will open in a new window
ISSN: 0020-7683
Views: 2364
Downloads: 992
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Other data

Secondary language: English
Secondary keywords: požarna odpornost;metoda končnih elementov;armiranobetonski stebri;temperaturna deformacija;lezenje;prehodna deformacija;Eurocode 2;
File type: application/pdf
Type (COBISS): Not categorized
Pages: Str. 5715-5733
Volume: Vol. 42
Issue: Issue 21-22
Chronology: 2005
DOI: 10.1016/j.ijsolstr.2005.03.015
ID: 8312361