The present paper recalls the main characteristics of an “advanced” numerical approach to assess the ultimate bearing capacity of steel and concrete composite columns in a fire environment taking into account also the II-order effects. Some comparisons with experimental tests on slender columns in a fire environment available in literature are also performed. Moreover, a simplified methodology of analysis for evaluating the ultimate bearing capacity of slender composite columns under fire is presented. The methodology is based on the knowledge of the thermal damage laws, which have been calibrated by fitting the results of an extensive parametric analysis carried out considering the most widely used sections of steel profiles and types of composite columns.
Slender steel-concrete columns in fire: testing and modelling by means of simplified approach
MATERAZZI, Annibale Luigi;BRECCOLOTTI, Marco
2004
Abstract
The present paper recalls the main characteristics of an “advanced” numerical approach to assess the ultimate bearing capacity of steel and concrete composite columns in a fire environment taking into account also the II-order effects. Some comparisons with experimental tests on slender columns in a fire environment available in literature are also performed. Moreover, a simplified methodology of analysis for evaluating the ultimate bearing capacity of slender composite columns under fire is presented. The methodology is based on the knowledge of the thermal damage laws, which have been calibrated by fitting the results of an extensive parametric analysis carried out considering the most widely used sections of steel profiles and types of composite columns.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.