Fire resistance of concrete encased steel columns under 3- and 4-side standard heating

被引：45

作者：

Mao, Xiaoyong ^{[1
,2
]}

Kodur, V. K. R. ^{[1
]}

机构：

[1] Michigan State Univ, Dept Civil Engn, E Lansing, MI 48823 USA

[2] Suzhou Univ Sci & Technol, Dept Civil Engn, Suzhou 215011, Peoples R China

来源：

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH | 2011年 / 67卷 / 03期

关键词：

Fire resistance; Concrete encased steel columns; 3-and 4-side heating; Composite columns;

D O I：

10.1016/j.jcsr.2010.11.006

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Results from seven fire resistance experiments on concrete encased steel (CES) columns under standard fire exposure conditions are presented. The test parameters include column size, 3- and 4-side fire exposure, load intensity and load eccentricity. Data from the tests is utilized to study the effect of the aforementioned parameters on thermal and structural response of concrete encased steel columns. Test results show that CES columns have higher fire resistance under 3-side hearing than that under 4-side heating. Also, load ratio and load eccentricity have a noticeable influence on the fire resistance of CES columns. In addition, spalling of the concrete decreases the fire resistance of CES columns. A comparison of measured fire resistance of CES columns with those predicted using current code provisions indicate that the current provisions may not be conservative in some situations. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：270 / 280

页数：11