Mechanical Performance of Extended End Plate Connections with CFST Columns in Fire

王静峰; 王海涛; 史伟伟

doi:10.13409/j.cnki.jdpme.2016.03.007

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Mechanical Performance of Extended End Plate Connections with CFST Columns in Fire

更新时间：2025-12-11

- Mechanical Performance of Extended End Plate Connections with CFST Columns in Fire
- Vol. 36, Issue 3, Pages: 367-372(2016)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2016.03.007
  CLC： U398.9
- Published：2016
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[1]王静峰,王海涛,史伟伟.火灾下钢管混凝土柱与钢梁外伸端板连接的力学性能[J].防灾减灾工程学报,2016,36(03):367-372.

王静峰, 王海涛, 史伟伟. Mechanical Performance of Extended End Plate Connections with CFST Columns in Fire[J]. 2016, 36(3): 367-372.
[1]王静峰,王海涛,史伟伟.火灾下钢管混凝土柱与钢梁外伸端板连接的力学性能[J].防灾减灾工程学报,2016,36(03):367-372. DOI： 10.13409/j.cnki.jdpme.2016.03.007.

王静峰, 王海涛, 史伟伟. Mechanical Performance of Extended End Plate Connections with CFST Columns in Fire[J]. 2016, 36(3): 367-372. DOI： 10.13409/j.cnki.jdpme.2016.03.007.

摘要

为了研究钢管混凝土框架梁柱半刚性连接的抗火性能

利用ABAQUS软件进行了火灾作用下钢管混凝土柱与钢梁外伸端板连接节点的热力耦合性能的数值模拟。确定了高温下钢材和核心混凝土的材料本构关系模型

建立了考虑楼板影响的钢管混凝土框架外伸端板连接节点的有限元计算模型

对三面受火和外荷载共同作用下节点的受力全过程进行了分析。详细分析了荷载比、螺栓预紧力、防火保护层厚度、材料特性、构件几何尺寸等参数对节点耐火极限的影响。结果表明

荷载比、螺栓预紧力、防火保护层厚度和钢梁截面高度对组合节点耐火极限的影响较显著。该研究结果将为火灾下半刚性钢管混凝土框架的设计理论提供科学依据。

Abstract

To obtain the fire resistance of beam-to-column semi-rigid joints for CFST frames

a numerical analysis of the thermal mechanical coupling behavior of extended end plate joints between CFST columns and steel beams in fire was done.The constitutive models of steel and core concrete material at high temperature were determined.The nonlinear finite element modeling of extended end plate joints to CFST columns was made considering the floor effect.The full process analysis of the typed connections under three-face fire and loading was carried out.The effects of load ratio

bolt pretightening force

fire protection layer thickness and material properties

geometry dimension of the main parameters on the fire resistance of the joints were studied.The research results show that the load ratio

the bolt pretightening force

the fire protection layer thickness and the dimensions of the steel beam significantly affect the fire resistance of composite joints.It provides the scientific basis of the design theory of semi-rigid CFST frames in fire.

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references

高温下钢管混凝土结构节点的简化计算方法 [J]. 王静峰,韩林海. 建筑钢结构进展 . 2009(02)

CECS 200-2006. 建筑钢结构防火技术规范 [S]. 2006

钢结构及钢-混凝土组合结构抗火设计[M]. 中国建筑工业出版社 , 李国强等著, 2006

钢管混凝土结构[M]. 科学出版社 , 韩林海著, 2004

Seismic response of extended end plate joints to concrete-filled steel tubular columns [J] . Jingfeng Wang,Lin Zhang,B.F. Spencer. Engineering Structures . 2013

Experimental and analytical behavior of blind bolted moment connections [J] . Jingfeng Wang,B.F. Spencer. Journal of Constructional Steel Research . 2013

Experimental investigation of extended end plate joints to concrete-filled steel tubular columns [J] . Jingfeng Wang,Liping Chen. Journal of Constructional Steel Research . 2012

Behaviour of flush end plate joints to concrete-filled steel tubular columns [J] . Jing-Feng Wang,Lin-Hai Han,Brian Uy. Journal of Constructional Steel Research . 2008 (4)

Moment–rotation–temperature curves for semi-rigid joints [J] . K.S. Al-Jabri,I.W. Burgess,T. Lennon,R.J. Plank. Journal of Constructional Steel Research . 2004 (3)

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