DISCUSSIONS ON PRACTICAL CALCULATION OF AXIAL AND FLEXURAL LOAD VERSUS DEFORMATION CURVES OF CFST AFTER EXPOSURE TO FIRE

Huo Jingsi

doi:10.13204/j.gyjz200611002

Volume 36 Issue 11

Dec. 2014

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Huo Jingsi, . DISCUSSIONS ON PRACTICAL CALCULATION OF AXIAL AND FLEXURAL LOAD VERSUS DEFORMATION CURVES OF CFST AFTER EXPOSURE TO FIRE[J]. INDUSTRIAL CONSTRUCTION, 2006, 36(11): 6-10. doi: 10.13204/j.gyjz200611002

Citation:

Huo Jingsi, . DISCUSSIONS ON PRACTICAL CALCULATION OF AXIAL AND FLEXURAL LOAD VERSUS DEFORMATION CURVES OF CFST AFTER EXPOSURE TO FIRE[J]. INDUSTRIAL CONSTRUCTION, 2006, 36(11): 6-10. doi: 10.13204/j.gyjz200611002

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DISCUSSIONS ON PRACTICAL CALCULATION OF AXIAL AND FLEXURAL LOAD VERSUS DEFORMATION CURVES OF CFST AFTER EXPOSURE TO FIRE

doi: 10.13204/j.gyjz200611002

Huo Jingsi¹,

1.
1 College of Civil Engineering,Hunan University Changsha 410082;
2.
2 Department of Civil Engineering,Tsinghua University Beijing 100084

Received Date: 2006-06-20
Publish Date: 2006-11-20

Abstract

Abstract

Based on theoretical analysis results,the indexes of the axial compression and flexural bearing capacities of concrete filled steel tube after exposure to fire are discussed.The simplified formulae for the calculation of the post-fire axial compression and bending bearing capacities are provided by regression.The simplified results are in good agreement with test results.The post-fire behaviors and charaterestics of the axial and flexural load versus deformation relations were analysed,and the post-fire simplified models of axial load versus deformation and moment versus curvature are presented.Comparisons of calculated results using simplified method show a good agreement with test results.The simplified method can provide a basis for concrete filled steel tubular structural analysis after exposure to fire.
- concrete filled steel tube,
- axial compression,
- flexural bending,
- bearing capacity,
- post-fire

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References(7)

References

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[4] Han L H,Yang Y F,Yang H,et al.Residual Strength of ConcreteFilled RHS Columns After Exposure to the ISO-834 Standard Fire.ThinWalled Structures,2002,40(12):991-1 012

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