@inproceedings{f675e9f1c86346859dd03966869d5261,
title = "Fire resistance of concrete filled square steel tube columns subjected to eccentric axial load",
abstract = "The fire resistance of concrete filled square steel tube columns (CFT columns) without fire protection under constant axial load has been examined. The purpose of this study is to investigate the fire resistance of CFT columns subjected to combined loads. In the first step, this paper presents a nonlinear thermal stress analysis method for predicting the mechanical behavior and fire resistance of these columns under eccentric axial load (axial load and flexure moment). This method is based on the stress-strain characteristics of materials at high temperatures and the mechanics of column deflection curves. From the results of the developed computational technique, it was demonstrated that as the yield stress and rigidity of the steel tube decreased rapidly for about 30 minutes, the decrease of flexure moment capacity became much smaller than that of the axial load capacity. In addition, as the eccentricity increased, the fire resistance time drastically decreased. However, the time of maximum expansion under eccentric axial load did not depend on the eccentricity of the load.",
author = "Park, {Su Hee} and Choi, {Sung Mo} and Ryoo, {Jae Yong} and Lee, {Kwang Ho} and Woo, {Sung Yeol} and Kim, {Sun Hee}",
year = "2007",
language = "English",
isbn = "9789810593711",
series = "5th International Conference on Advances in Steel Structures, ICASS 2007",
pages = "675--683",
booktitle = "5th International Conference on Advances in Steel Structures, ICASS 2007",
note = "5th International Conference on Advances in Steel Structures, ICASS 2007 ; Conference date: 05-12-2007 Through 07-12-2007",
}