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

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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

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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

[2] Han L H,Yang H,Cheng S L.Residual Strength of Concrete Filled RHS Stub Columns After Exposure to High Temperatures.Advances in Structural Engineering,2002,5(2):123-134

韩林海.钢管混凝土结构--理论与实践.北京:科学出版社,2004

[3] Han L H,Huo J S.Concrete-Filled Hollow Structural Steel Columns After Exposure to ISO-834 Standard Fire.Journal of Structural Engineering,ASCE,2003,129(1):68-78

[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

[5] Han L H,Lin X K.Tests on Cyclic Behavior of Concrete-Filled Hollow Structural Steel Columns After Exposure to the ISO-834 Standard Fire.Journal of Structural Engineering,ASCE,2004,130(11):1 807-1 819

[6] Han Linhai,Huo Jingsi,Wang Yongchang.Compressive and Flexural Behaviour of Concrete Filled Steel Tubes After Exposure to Standard Fire.Journal of Constructional Steel Research,2005,61(7):882-901

[7] 霍静思.火灾作用后钢管混凝土柱-钢梁节点力学性能研究:[博士学位论文].福州:福州大学,2005

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