Experimental researches on behavior of high-performance concrete filled tubular steel stub columns after high temperature

被引：0
|
作者：
Yu, ZW [1 ]
Ding, FX [1 ]
Lin, S [1 ]
机构：
[1] Cent S Univ, Civil & Architecture Coll, Changsha 410075, Hunan, Peoples R China
来源：
PROGRESS IN SAFETY SCIENCE AND TECHNOLOGY, VOL III, PTS A AND B | 2002年 / 3卷
关键词：
high temperature; high-performance concrete filled tubular steel; ultimate loading capacity;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Based on experimental studies of 36 high-performance concrete filled tubular steel stub columns after high temperature and 6 high-performance concrete filled tubular steel stub columns under ordinary temperature which concrete strength grade is C80, the principal factors of peak temperature, peak temperature maintenance time and steel ratio on ultimate loading capacity for high-performance concrete filled tubular steel stub columns after high temperature are discussed. Experiments show: With the exposure temperature up and maintenance time increase, ultimate loading capacity for high-performance concrete filled tubular steel stub columns after high temperature tend to decrease as a whole. However, ultimate loading capacity for high-performance concrete filled tubular steel specimens after high temperature just fluctuates slightly under 500degreesC, but decreases sharply above 500degreesC. With steel ratio increasing, ultimate loading capacity for high-performance concrete filled tubular steel stub columns after high temperature increases slightly. Furthermore, the calculation formula for ultimate loading capacity for HPCFTS after high temperature also is presented. And the calculation formula also can be applied in normal strength concrete filled tubular steel stub columns and high-strength concrete filled tubular steel stub columns. A comparison of calculated results with experimental results shows good agreement.
引用
收藏
页码：579 / 584
页数：6
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