NUMERICAL ANALYSIS OF FIRE-DAMAGED COLUMNS STRENGTHENED BY CROSS-SECTIONAL ENLARGEMENT
An analytical model is presented to calculate the load carrying capacity of concrete columns strengthened by enlarging the cross-sections after fire exposure.The calculated column temperatures and load carrying capacities are compared with those measured.The results indicate the capability of the analytical model to predict the temperatures,and the load carrying capacities of the strengthened column with accuracy adequate for structural practice.The model enables the determination of the load carrying capacity of a strengthened column after high temperature exposure for different values of the significant parameters,such as the load,eccentricity,original column dimension,the depth of the strengthening concrete,concrete strength,the time-temperature curve in the furnace,and the percentage of reinforcing steel,without the need for testing.
Reinforced concrete columns strengthening load carrying capacity high temperature finite difference
Lixian Liu Qiongxian Gao Long Lv
Department of Civil Engineering, Kunming University of Science and Technology, Kunming 650034, P.R.C Department of Civil Engineering, Yunnan University, Kunming 650051, P.R.China
国际会议
The Twelfth International Symposium on Structural Engineering (第十二届结构工程国际研讨会)
武汉
英文
1635-1643
2012-11-17（万方平台首次上网日期，不代表论文的发表时间）