Experimental Studies on the Fire Resistance of Hollow Steel Columns Filled with Bar-reinforced Concrete

Experimental studies were carried out to determine the fire resistance of circular and square hollow structural steel columns filled with bar-reinforced concrete. The results of eight full-scale fire resistance tests are described. The main study variables were the column dimensions and the load intensity. These studies were conducted as part of a research program aimed at developing methods capable of predicting the fire resistance of concrete-filled hollow steel columns.On a r\ue9alis\ue9 des \ue9tudes exp\ue9rimentales dans le but de d\ue9terminer quelle \ue9tait la r\ue9sistance au feu de poteaux en acier de charpente creux, de section ronde et de section carr\ue9e, remplis de b\ue9ton ordinaire. Les r\ue9sultats de huit (8) essais de r\ue9sistance au feu en vraie grandeur sont d\ue9crits. Les principales variables de l?\ue9tude comprenaient les dimensions des poteaux et l?intensit\ue9 de la charge. Ces \ue9tudes ont \ue9t\ue9 men\ue9es dans le cadre d?un programme de recherche visant la cr\ue9ation de m\ue9thodes permettant de pr\ue9dire la tenue au feu des poteaux en acier creux remplis de b\ue9ton.Peer reviewed: NoNRC publication: Ye