Numerical analysis of composite steel and concrete beams subjected to fire under different support conditions

Revista IBRACON de Estruturas e Materiais

卷:13

关键词: fire;    composite steel concrete beam;    semi-continuous;    numerical analysis;   

DOI  :  10.1590/s1983-41952020000500013

来源: DOAJ

【 摘 要 】

abstract: To evaluate the behavior of semi-continuous composite beams in fire, six finite elements numerical models with several steel profiles and slab dimensions were developed in ABAQUS software. The models took into account several behaviors usually suppressed in simplified analyzes such as: geometric and materials non-linearity properties and thermal expansion effects, including indirect stresses. Three support conditions were analyzed: simply supported (axial released), axial restrained and semi-continuous, totaling 18 analyzes. The different support conditions results were compared to each other and to the fire resistance time designed by simplified methods, which followed design code recommendations.

【 授权许可】

Unknown