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

Povzetek

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.

Ključne besede

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;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik: Elsevier
UDK: 006(4):614.84:624.012.45:624.075.2
COBISS: 2813793 Povezava se bo odprla v novem oknu
ISSN: 0020-7683
Št. ogledov: 2364
Št. prenosov: 992
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarne ključne besede: požarna odpornost;metoda končnih elementov;armiranobetonski stebri;temperaturna deformacija;lezenje;prehodna deformacija;Eurocode 2;
Vrsta datoteke: application/pdf
Vrsta dela (COBISS): Delo ni kategorizirano
Strani: Str. 5715-5733
Letnik: Vol. 42
Zvezek: Issue 21-22
Čas izdaje: 2005
DOI: 10.1016/j.ijsolstr.2005.03.015
ID: 8312361