웨브부분의 내화피복재가 손상된 H-형강 기둥의 열전달해석

Abstract

This paper describes our analysis performed to predict the effect variations of localized temperature during fire events in steel columns using spray-applied fire resistive material (SFRM) on their web. Steel columns with damaged SFRM exhibit reduced structural performance due to the localized effects of elevated temperature during a fire event. Thus, the fire load behavior of steel columns with removed or reduced SFRM needs to be examined to predict fire induced structural damage. There are very few studies on the fire resistance of steel structures. Therefore, to evaluate the fire resistance performance of steel columns with damaged SFRM, an analysis was performed using three steel columns [H-250×250×9×14, H-350×350×12×19, and H-428×407×20×35]. Heat transfer analysis was performed on the basis of the finite element program ABAQUS 6.8-1 using an ISO834 standard fire. The variables were removed thickness or length on the web, and column weight.