Experimental Study on the Initial Collapse Mechanism of Multi-story Steel Frames under Localized Fire

陈适才; 田相凯; 张磊; 李易; 陆新征

doi:10.13409/j.cnki.jdpme.2015.01.019

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Experimental Study on the Initial Collapse Mechanism of Multi-story Steel Frames under Localized Fire

更新时间：2025-12-11

- Experimental Study on the Initial Collapse Mechanism of Multi-story Steel Frames under Localized Fire
- Vol. 35, Issue 1, Pages: 113-118(2015)
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- DOI：10.13409/j.cnki.jdpme.2015.01.019
  CLC： U391;TU312.3
- Published：2015
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[1]陈适才,田相凯,张磊,李易,陆新征.局部火灾引起整体钢结构倒塌初始破坏机理的试验研究[J].防灾减灾工程学报,2015,35(01):113-118.

陈适才, 田相凯, 张磊, et al. Experimental Study on the Initial Collapse Mechanism of Multi-story Steel Frames under Localized Fire[J]. 2015, 35(1): 113-118.
[1]陈适才,田相凯,张磊,李易,陆新征.局部火灾引起整体钢结构倒塌初始破坏机理的试验研究[J].防灾减灾工程学报,2015,35(01):113-118. DOI： 10.13409/j.cnki.jdpme.2015.01.019.

陈适才, 田相凯, 张磊, et al. Experimental Study on the Initial Collapse Mechanism of Multi-story Steel Frames under Localized Fire[J]. 2015, 35(1): 113-118. DOI： 10.13409/j.cnki.jdpme.2015.01.019.

摘要

为研究局部火灾下整体钢结构倒塌的初始破坏机理

分别考虑中柱及边柱受火破坏类型

设计了4个平面钢框架结构进行火灾试验研究。试验在立体火灾试验炉内进行

采用恒载升温模式。试验过程中

首层中柱或边柱以及与之相连的钢梁受火

中间层钢柱和梁柱节点采取防火保护措施

受火柱底部与自制测力支座通过螺栓连接。通过试验得到了受火梁、柱的温度场分布和位移反应的变化规律

以及受火中柱的轴力变化过程

对引起整体钢结构倒塌的初始破坏过程和破坏机制进行了分析。

Abstract

To study the initial collapse mechanism of multi-story steel structures under localized fire

the experimental study on four full-scale steel frame structures was performed.The experiments were conducted in a three-dimensional fire test furnace under elevated temperature at constant load mode.The first floor column and the steel beams connected with it were subjected to fire during the test

whereas the middle floor column and beam-column joint were fire protected.The bottom of the column under fire was connected with the developed force-measuring bearing using the bolt joint.The temperature distribution and the displacement response of the columns and beams were obtained

and the variation of axial force of the interior column was obtained by using the force-measuring bearing

and the initial collapse mechanisms of structures were obtained through the fire experiment.

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references

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单室受火对双层双跨组合钢框架抗火性能的影响 [J]. 董毓利,李晓东. 实验力学 . 2007(01)

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