Analysis of The Yield-mechanism of The Steel Component by Two Kinds of Transient Tests

李焕群; 屈立军

doi:10.13409/j.cnki.jdpme.2012.s1.024

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Analysis of The Yield-mechanism of The Steel Component by Two Kinds of Transient Tests

更新时间：2025-12-11

- Analysis of The Yield-mechanism of The Steel Component by Two Kinds of Transient Tests
- Vol. 32, Issue S1, Pages: 50-54(2012)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2012.s1.024
  CLC： U511.3
- Published：2012
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[1]李焕群,屈立军.两种不同的恒载升温方式下的钢材破坏机理分析[J].防灾减灾工程学报,2012,32(S1):50-54.

李焕群, 屈立军. Analysis of The Yield-mechanism of The Steel Component by Two Kinds of Transient Tests[J]. 2012, 32(S1): 50-54.
[1]李焕群,屈立军.两种不同的恒载升温方式下的钢材破坏机理分析[J].防灾减灾工程学报,2012,32(S1):50-54. DOI： 10.13409/j.cnki.jdpme.2012.s1.024.

李焕群, 屈立军. Analysis of The Yield-mechanism of The Steel Component by Two Kinds of Transient Tests[J]. 2012, 32(S1): 50-54. DOI： 10.13409/j.cnki.jdpme.2012.s1.024.

摘要

通过对我国建筑结构用钢在拉伸和压缩两种方式下的恒载升温试验

进行了5次受拉试件和2次受压试件的对比研究

根据试验中材料的各自变形规律

对其破坏机理进行了理论分析;从材料屈服的定义出发

给出了恒载升温拉伸试验中的参数（对应温度下的临界荷载水平）

并与恒载升温压缩试验中的参数项进行了对比

指出受压构件和受拉构件的高温屈服强度是不同的

因此在钢结构建筑的耐火设计中应分别取不同的安全系数。

Abstract

In This paper

experiments on compression and tension of structuralsteel were carried out by transient tests.The experiments include five tension tests and two compression tests.According to the deformation rule of the tested steel

the mechanism of yielding was analyzed.Based on the definition of yield for steel material

the strength parameters of the steel in tension tests were obtained via transient tests.The results were then compared with those in compression tests.It was found that the high temperature strengths of tension and compression components were different.Thus

different safety factors must be selected for these two components during fire resistance designing.

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references

国产Q345钢600℃恒载升温试验研究 [J]. 李焕群,屈立军,王跃琴. 钢结构 . 2009(11)

温度应力对钢结构影响的试验研究 [J]. 李焕群,屈立军. 建筑结构 . 2008(07)

国产钢结构用Q345（16Mn）钢高温力学性能的恒温加载试验研究 [J]. 屈立军,李焕群,王跃琴,张辉,保彦晴. 土木工程学报 . 2008(07)

工字钢短柱高温强度试验研究 [J]. 李焕群,屈立军. 钢结构 . 2004(06)

高温下Q345钢的材料性能试验研究 [J]. 李国强,陈凯,蒋首超,殷颖智. 建筑结构 . 2001(01)

高温下钢材力学性能的试验研究 [J]. 赵金城. 建筑结构 . 2000(04)

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