Temperature analysis of steel hollow column exposed to standard fire

Abstract

Temperature analysis is the first step in determining the behavior of a member under fire condition, obtaining an accurate thermal response on a member exposed to fire will result in getting the actual mechanical response on a member. Fire resistance test was carried out on three circular steel hollow section columns axially loaded with 15, 20 and 25% load level. The result shows that the critical temperature and fire resistance time of the steel hollow section columns decrease with increase in the applied load level for all the columns. A three-dimensional finite element analysis was developed to simulate the temperature development on the steel hollow section column exposed to standard fire. The measured critical temperatures were compared with the predicted and calculated values.