火灾作用后钢管混凝土轴压与纯弯荷载-变形关系曲线实用计算方法探讨

霍静思; 韩林海

doi:10.13204/j.gyjz200611002

火灾作用后钢管混凝土轴压与纯弯荷载-变形关系曲线实用计算方法探讨

doi: 10.13204/j.gyjz200611002

霍静思¹,
韩林海²

1.
1 湖南大学土木工程学院长沙410082;
2.
2 清华大学土木工程系北京100084

基金项目:

国家杰出青年科学基金资助项目(编号:50425823)

详细信息

作者简介:
霍静思男 1970年12月出生博士副教授 E-mail:huojingsi@hnu.Cn

中图分类号: TU398.9
计量
- 文章访问数: 92
- HTML全文浏览量: 15
- PDF下载量: 56
- 被引次数: 0
出版历程
- 收稿日期: 2006-06-20
- 刊出日期: 2006-11-20

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

Huo Jingsi¹,

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

摘要

摘要: 在数值计算结果的基础上,对火灾作用后钢管混凝土轴压强度承载力和抗弯承载力指标问题进行探讨,并给出其简化计算公式,简化计算结果与试验结果吻合较好。通过分析火灾后荷载-变形全过程关系各阶段的力学指标,提出火灾后轴压-关系和纯弯M-关系全过程曲线的实用计算方法,简化计算结果与试验结果吻合较好,为进行火灾后钢管混凝土结构体系分析提供依据。
- 钢管混凝土 /
- 轴压 /
- 抗弯 /
- 承载力 /
- 火灾后
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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参考文献(7)

[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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