Fire Performance of CFST Column to RC Beam Joints with Beam Ends Constrained

王丹丹; 杨有福

doi:10.13409/j.cnki.jdpme.2017.03.011

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Fire Performance of CFST Column to RC Beam Joints with Beam Ends Constrained

更新时间：2025-12-11

- Fire Performance of CFST Column to RC Beam Joints with Beam Ends Constrained
- Vol. 37, Issue 3, Pages: 405-413(2017)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2017.03.011
  CLC： U398.9
- Published：2017
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[1]王丹丹,杨有福.考虑梁端约束CFST柱-RC梁节点耐火性能研究[J].防灾减灾工程学报,2017,37(03):405-413.

王丹丹, 杨有福. Fire Performance of CFST Column to RC Beam Joints with Beam Ends Constrained[J]. 2017, 37(3): 405-413.
[1]王丹丹,杨有福.考虑梁端约束CFST柱-RC梁节点耐火性能研究[J].防灾减灾工程学报,2017,37(03):405-413. DOI： 10.13409/j.cnki.jdpme.2017.03.011.

王丹丹, 杨有福. Fire Performance of CFST Column to RC Beam Joints with Beam Ends Constrained[J]. 2017, 37(3): 405-413. DOI： 10.13409/j.cnki.jdpme.2017.03.011.

摘要

针对火灾下钢管混凝土（CFST）柱-钢筋混凝土（RC）梁节点的力学性能

建立了火灾下节点温度场和力学场分析的有限元模型

并利用已有试验结果验证了有限元模型的有效性。研究了材料参数、几何参数、荷载参数及梁端约束刚度对CFST柱-RC梁节点耐火极限的影响

重点考察了梁端轴向和转动约束刚度对火灾下CFST柱-RC梁节点弯矩-转角关系、转动刚度和截面内力分布规律的影响。结果表明

CFST柱-RC梁节点在火灾下有两种破坏形态:柱破坏和梁板破坏

梁端约束对CFST柱-RC梁节点耐火极限的影响较小

但梁端轴向约束对火灾下CFST柱-RC梁节点弯矩—转角关系、转动刚度和截面内力分布规律的影响显著。

Abstract

A finite element analysis（FEA）model was developed for sequentially coupled heat transfer and mechanical analysis of concrete filled steel tube（CFST）column to reinforced concrete（RC）beam joints under fire

which was validated by the experimental results available in the literature.The FEA model was then used to investigate the influence of material parameters

geometric parameters

load parameters and the constrained stiffness at beam ends on the fire resistance of CFST column to RC beam joints

and particularly the effect of axial and rotational constrained stiffness at beam ends on the moment versus rotation angle relationship

rotational stiffness and distribution of sectional inner forces of CFST column to RC beam joints in fire.The results show that CFST column to RC beam joints have two kinds of failure model:column failure and beam-slab failure.The constraint at beam ends has little influence on the fire resistance of CFST column to RC beam joints;however

the axial constraint has a significant impact on the moment versus rotation angle relationship

rotational stiffness and distribution of sectional inner forces of the composite joints in fire.

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references

火灾后钢—混凝土组合框架梁—柱节点的力学性能研究 [D]. 宋天诣. 清华大学 2010

钢管混凝土结构[M]. 科学出版社 , 韩林海, 2016

钢-混凝土组合结构抗火设计原理[M]. 科学出版社 , 韩林海, 2012

现代钢管混凝土结构技术[M]. 中国建筑工业出版社 , 韩林海, 2007

Fire performance of concrete filled steel tubular （CFST） column to RC beam joints [J] . Qing-Hua Tan,Lin-Hai Han,Hong-Xia Yu. Fire Safety Journal . 2012

Experimental behaviour of reinforced concrete （RC） beam to concrete-filled steel tubular （CFST） column frames subjected to ISO-834 standard fire [J] . Lin-Hai Han,Wei-Hua Wang,Hong-Xia Yu. Engineering Structures . 2010 (10)

Experimental study of structural fire behaviour of steel beam to concrete filled tubular column assemblies with different types of joints [J] . J. Ding,Y.C. Wang. Engineering Structures . 2007 (12)

Fire resistance of compartments within a high-rise steel frame: New sub-frame and isolated member models [J] . Zhan-Fei Huang,Kang-Hai Tan. Journal of Constructional Steel Research . 2006 (10)

An experimental study of the fire performance of non-sway loaded concrete-filled steel tubular column assemblies with extended end plate connections [J] . Y.C Wang,J.M Davies. Journal of Constructional Steel Research . 2003 (7)

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