STABILITY ANALYSIS OF BENDING DAMAGED COLUMNS OF LIGHT-WEIGHT STEEL UNDER ELEVATED TEMPERATURES
The existing damages for lightweight columns due to large deformations such as the results of blast loading might reduce vertical stability as they are exposing themselves to elevated temperatures. In the paper,the stability capacity of a light weight steel column under the condition of various degrees of initial damages is theoretically and numerically researched. The critical stress formula with initial bending damage under elevated temperature was set up by using flexural small deformation condition,and then the stability coefficient was determined and the method for evaluating the limit temperature of the column was put forward. The theoretical result is compared with that of the finite element method (FEM). The results both showed that the stability capacity for the damaged column is dramatically reduced as the temperature increasing. Meanwhile,under the same elevated temperature,the stability capacity will decrease with the increasing of the damage level.
Shi Yan Peng Li Baoxin Qi Lei Liu Zhiqiang Xin
School of Civil Engineering,Shenyang Jianzhu University,Shenyang 100168,P.R.China State Key Laborato School of Civil Engineering,Shenyang Jianzhu University,Shenyang 100168,P.R.China School of Civil Engineering,Shenyang Jianzhu University,Shenyang 100168,P.R.China Faculty of Infrast
国际会议
厦门
英文
1034-1040
2011-10-28（万方平台首次上网日期，不代表论文的发表时间）