Fire Performance of Square Concrete-filled Steel Tube Plane Frames

王广勇; 刘广伟; 刘晓阳

doi:10.13409/j.cnki.jdpme.2012.s1.009

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Fire Performance of Square Concrete-filled Steel Tube Plane Frames

更新时间：2025-12-11

- Fire Performance of Square Concrete-filled Steel Tube Plane Frames
- Vol. 32, Issue S1, Pages: 40-44(2012)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2012.s1.009
  CLC： U398.9
- Published：2012
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[1]王广勇,刘广伟,刘晓阳.方钢管混凝土柱-钢梁平面框架耐火性能研究[J].防灾减灾工程学报,2012,32(S1):40-44.

王广勇, 刘广伟, 刘晓阳. Fire Performance of Square Concrete-filled Steel Tube Plane Frames[J]. 2012, 32(S1): 40-44.
[1]王广勇,刘广伟,刘晓阳.方钢管混凝土柱-钢梁平面框架耐火性能研究[J].防灾减灾工程学报,2012,32(S1):40-44. DOI： 10.13409/j.cnki.jdpme.2012.s1.009.

王广勇, 刘广伟, 刘晓阳. Fire Performance of Square Concrete-filled Steel Tube Plane Frames[J]. 2012, 32(S1): 40-44. DOI： 10.13409/j.cnki.jdpme.2012.s1.009.

摘要

建立了局部火灾下多层多跨矩形钢管混凝土柱-钢梁平面框架温度场和力学性能分析的有限元模型。在考虑楼板影响的基础上

研究了保护层厚度不同时钢管混凝土框架结构的温度场分布规律。研究了不同受火工况条件下钢管混凝土框架结构的变形和破坏规律、耐火极限状态、受火梁的内力状态以及结构耐火极限的规律。分析表明

梁保护层厚度影响钢梁温度分布形式;火灾下

框架结构发生了受火梁的整体屈曲破坏。

Abstract

A finite element model（FEM） for calculating the temperature field and mechanical behavior of concrete-filled steel tube（CFST） plane frames under local fire is presented in this paper.Temperature distribution under different fire protection cover thickness is studied considering the influence of floor slab.Then

the deformation and failure mechanism

ultimate state

internal force state and the fire resistance of the CFST plane frames in fire is discussed by using the FEM.The results show that the temperature distribution mode of the heated beams is mainly controlled by the fire protection cover thickness

and the frame failure in fire is induced by the global buckling of the steel beams.

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references

钢管混凝土结构[M]. 科学出版社 , 韩林海著, 2004

钢筋混凝土的高温性能及其计算[M]. 清华大学出版社 , 过镇海,时旭东著, 2003

Fire Resistance of Rectangular Steel Columns Filled with Bar-Reinforced Concrete [J] . T. T. Lie,R. J. Irwin. Journal of Structural Engineering . 1995 (5)

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