Preliminary Research on Mechanical Behavior of Composite Frame with Concrete-filled Steel Tubular Columns after Exposure to Overall Stage of Fire

王景玄; 张鹏鹏; 王文达

doi:10.13409/j.cnki.jdpme.2012.01.015

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Preliminary Research on Mechanical Behavior of Composite Frame with Concrete-filled Steel Tubular Columns after Exposure to Overall Stage of Fire

更新时间：2025-12-11

- Preliminary Research on Mechanical Behavior of Composite Frame with Concrete-filled Steel Tubular Columns after Exposure to Overall Stage of Fire
- Vol. 32, Issue 1, Pages: 84-88(2012)
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- DOI：10.13409/j.cnki.jdpme.2012.01.015
  CLC： U398.9
- Published：2012
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[1]王景玄,张鹏鹏,王文达.考虑火灾全过程的钢管混凝土组合框架力学性能初步研究[J].防灾减灾工程学报,2012,32(01):84-88.

王景玄, 张鹏鹏, 王文达. Preliminary Research on Mechanical Behavior of Composite Frame with Concrete-filled Steel Tubular Columns after Exposure to Overall Stage of Fire[J]. 2012, 32(1): 84-88.
[1]王景玄,张鹏鹏,王文达.考虑火灾全过程的钢管混凝土组合框架力学性能初步研究[J].防灾减灾工程学报,2012,32(01):84-88. DOI： 10.13409/j.cnki.jdpme.2012.01.015.

王景玄, 张鹏鹏, 王文达. Preliminary Research on Mechanical Behavior of Composite Frame with Concrete-filled Steel Tubular Columns after Exposure to Overall Stage of Fire[J]. 2012, 32(1): 84-88. DOI： 10.13409/j.cnki.jdpme.2012.01.015.

摘要

为进一步研究真实火灾工况下钢管混凝土组合框架的抗火性能

基于有限元软件ABAQUS建立了单层单跨圆形钢管混凝土柱-组合梁平面框架经历火灾全过程的数值分析模型。通过合理选取热工参数

进行了组合框架在ISO-834标准升降温曲线下的热传分析

研究了组合框架钢管混凝土柱与组合梁截面温度场的变化规律;在热传模型的基础上

通过合理选取材料本构模型、单元类型、边界条件以及网格划分等

对经历常温加载、升温、降温以及火灾后的钢管混凝土柱-组合梁平面框架的力学性能进行初步探讨。结果表明

由于钢筋混凝土楼板在受火过程中的吸热与约束作用使组合框架在受火后仍具有较高承栽力。该方法可进一步完善钢管混凝土结构抗火分析理论

也可供实际工程应用参考。

Abstract

In order to simulate the real fire resistance in the projects

this paper presented a finite element model（FEM） of concrete-filled steel tubular（CFST） columns and composite beam single-story-single-span planar frame after exposure to overall stage of fire based on ABAQUS.The whole phases including loading at ambient

heating

cooling and post-fire

which followed the ISO-834 standard fire curve.The temperature model was established with the determinations of thermal parameters of steel and core concrete.The temperature distribution of CFST columns and composite beam was calculated using FEM.The mechanical behavior of CFST columns and composite beam frame working in entire stage of fire was discussed in this paper.The result shows that:The CFST composite frame still has high bearing capacity after exposure to overall stage of fire due to the heat absorption and the constraint function of reinforced concrete floor.The results of this paper can provide a basis for fire-damage assessment of composite beam frame with CFST columns.

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references

无粘结预应力混凝土框架火灾下结构反应分析 [J]. 陆洲导,李刚,许立新. 土木工程学报 . 2003(10)

钢管混凝土结构[M]. 科学出版社 , 韩林海, 2007

火灾后钢筋混凝土结构的力学性能[M]. 科学出版社 , 吴波著, 2003

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)

The fire behaviour of multi-bay, two-way reinforced concrete slabs [J] . P.J. Moss,R.P. Dhakal,G. Wang,A.H. Buchanan. Engineering Structures . 2008 (12)

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)

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