RESIDUAL STRENGTH OF CONCRETE-FILLED DOUBLE-SKIN STEEL TUBULAR STUB COLUMNS AFTER EXPOSURE TO FIRE

Yu Xin; Tao Zhong

doi:10.13204/j.gyjz200904003

Volume 39 Issue 4

Dec. 2014

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Yu Xin, Tao Zhong. RESIDUAL STRENGTH OF CONCRETE-FILLED DOUBLE-SKIN STEEL TUBULAR STUB COLUMNS AFTER EXPOSURE TO FIRE[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(4): 9-13. doi: 10.13204/j.gyjz200904003

Citation:

Yu Xin, Tao Zhong. RESIDUAL STRENGTH OF CONCRETE-FILLED DOUBLE-SKIN STEEL TUBULAR STUB COLUMNS AFTER EXPOSURE TO FIRE[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(4): 9-13. doi: 10.13204/j.gyjz200904003

Yu Xin, Tao Zhong. RESIDUAL STRENGTH OF CONCRETE-FILLED DOUBLE-SKIN STEEL TUBULAR STUB COLUMNS AFTER EXPOSURE TO FIRE[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(4): 9-13. doi: 10.13204/j.gyjz200904003

Citation:

Yu Xin, Tao Zhong. RESIDUAL STRENGTH OF CONCRETE-FILLED DOUBLE-SKIN STEEL TUBULAR STUB COLUMNS AFTER EXPOSURE TO FIRE[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(4): 9-13. doi: 10.13204/j.gyjz200904003

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RESIDUAL STRENGTH OF CONCRETE-FILLED DOUBLE-SKIN STEEL TUBULAR STUB COLUMNS AFTER EXPOSURE TO FIRE

doi: 10.13204/j.gyjz200904003

Yu Xin,
Tao Zhong

1.
College of Civil Engineering,Fuzhou University,Fuzhou 350108,China

Received Date: 2009-01-05
Publish Date: 2009-04-20

Abstract

Abstract

Test results of six concrete-filled double-skin steel tubular(CFDST) stub columns are presented.Circular hollow sections(CHS) and square hollow sections(SHS) were used to fabricate the inner and outer skins of the composite columns.The main parameters explored in this test programme were the section type(CHS inner and CHS outer,SHS inner and SHS outer,and CHS inner and SHS outer) and whether or not exposure to fire.It was found that the strength of the CFDST columns decreased significantly after exposure to fire.However,the residual strength of these innovative CFDST columns was still comparable to that of conventional concrete-filled steel tubular columns.Of all the three types of sections with a same hollow section ratio,the one with CHS inner and SHS outer shown the highest residual strength,whilst that with CHS inner and CHS outer shown the best ductility behaviour.
- concrete-filled steel tube,
- stub column,
- fire exposure,
- double-skin,
- post-fire residual strength

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References(10)

References

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