Mechanical Behaviors of Reinforced Concrete L-shaped Columns Subjected to High Temperature

摘要：

Three full-scale reinforced concrete (R.C) columns with L-shaped cross section and one full-scale RC column with square cross section were experimentally investigated in fire following ISO834 standard heating process to to investigate the behaviours of L-shaped columns exposed to fire. A numerical model based on 3-Dimensional thermal solid element and 3-Diminstional beam element was proposed in this paper. Details of fire resistance experiment, together with results, were presented. Predictions from the numerical method were compared with results from full-scale fire resistance tests. The results indicate that: (1) the fire resistance of L-shaped column is lower than that of square column. When the axial ratio is 0.55, the fire resistance of L-shaped column is 60％ of that with square cross section. (2) axial load ratio has significant effect on the fire resistance of L-shaped column. (3) the numerical model is feasible to predict the behaviours of L-shaped column subjected to high temperature.

关键词： fire resistance concrete columns L-shaped cross section numerical model tests

作者: XU Yuye LUO Yi

作者单位: College of Civil Engineering,Huaqiao University,Quanzhou 362021,Fujian,China

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 1814-1819

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）