约束高强度Q460钢柱抗火性能分析

葛勇; 王卫永

doi:10.13409/j.cnki.jdpme.2012.01.017

您当前的位置：

首页 >

文章列表页 >

约束高强度Q460钢柱抗火性能分析

论文 | 更新时间：2025-12-11

- 约束高强度Q460钢柱抗火性能分析
- Fire Resistance Analysis of Restrained High Strength Q460 Steel Columns
- 防灾减灾工程学报 2012年32卷第1期页码：99-104
- 作者机构：
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目（51006320）;教育部高等学校博士学科点科研基金项目（20090191120032）;重庆市自然科学基金项目（CSTC,2010BB4224）资助
- DOI：10.13409/j.cnki.jdpme.2012.01.017
  中图分类号： U391
- 纸质出版：2012
- 稿件说明：
移动端阅览
[1]葛勇,王卫永.约束高强度Q460钢柱抗火性能分析[J].防灾减灾工程学报,2012,32(01):99-104.

葛勇, 王卫永. Fire Resistance Analysis of Restrained High Strength Q460 Steel Columns[J]. 2012, 32(1): 99-104.
[1]葛勇,王卫永.约束高强度Q460钢柱抗火性能分析[J].防灾减灾工程学报,2012,32(01):99-104. DOI： 10.13409/j.cnki.jdpme.2012.01.017.

葛勇, 王卫永. Fire Resistance Analysis of Restrained High Strength Q460 Steel Columns[J]. 2012, 32(1): 99-104. DOI： 10.13409/j.cnki.jdpme.2012.01.017.

摘要

为了研究高强度约束钢柱在火灾下的反应

根据高强度结构钢Q460在高温下的力学性能参数

建立了约束高强度钢柱受火分析模型

得到了高强度约束钢柱在火灾下的轴向位移、跨中挠度、最大应力以及临界温度。采用有限元分析对理论结果进行了验证

两者吻合很好。利用验证过的该文计算方法计算了2种荷栽比、长细比和约束刚度比条件下的高强钢柱的抗火性能;采用CECS200:2006的力学性能参数计算了约束普通钢柱的抗火性能。通过对高强钢和普通钢的抗火性能分析发现

轴向约束明显降低钢柱的临界温度

长细比、荷载比越大

临界温度越低;高强钢的抗火性能要优于普通钢。

Abstract

In order to investigate the behavior of high strength steel column in fire

the analysis model is established based on mechanical properties of Q460 at high temperatures.The axial displacement

midspan deflection

maximum stress and critical temperature for high strength steel columns are obtained. The analysis results are validated by finite element analysis

and a good agreement is found.The fire resistance of high strength steel columns

which have two kinds of load ratio

slenderness ratio and axial restraint stiffness

is calculated by the validated calculation method.The fire resistance of conventional steel columns is also calculated based on mechanical properties of CECE200:2006.Through the comparison of the fire resistance of high strength steel columns with that of conventional steel columns

it is found that axial restrain reduces the critical temperature of steel column significantly;the critical temperature decreases with the increase of slenderness ratio and load ratio;And the fire resistance property of high strength restrained steel columns is better than conventional steel columns.

关键词

Keywords

references

Behaviour and design of restrained steel column in fire: Part 2. Parameter study [J] . Peijun Wang,Yongchang Wang,Guo-Qiang Li. Journal of Constructional Steel Research . 2010 (8)

Behaviour and design of restrained steel column in fire, Part 1: Fire test [J] . Guo-Qiang Li,Peijun Wang,Yongchang Wang. Journal of Constructional Steel Research . 2010 (8)

Behaviour and design of restrained steel column in fire, Part 3: Practical design method [J] . Peijun Wang,Guo-Qiang Li,Yongchang Wang. Journal of Constructional Steel Research . 2010 (11)

A new design method for calculating critical temperatures of restrained steel column in fire [J] . Peijun Wang,Yong-Chang Wang,Guo-Qiang Li. Fire Safety Journal . 2010 (6)

The natural fire safety concept—full-scale tests at Cardington [J] . Tom Lennon,David Moore. Fire Safety Journal . 2003 (7)

A structural analysis of the Cardington British Steel Corner Test [J] . M. Gillie,A.S. Usmani,J.M. Rotter. Journal of Constructional Steel Research . 2002 (4)

Why Did the World Trade Center Collapse?—Simple Analysis [J] . Zden&ecaron,k P. Ba&zcaron,ant,Yong Zhou. Journal of Engineering Mechanics . 2002 (1)

A structural analysis of the first Cardington test [J] . M Gillie,A.S Usmani,J.M Rotter. Journal of Constructional Steel Research . 2001 (6)

Experimental research on the critical temperature of compressed steel elements with restrained thermal elongation [J] . J.P.Correia Rodrigues,I Cabrita Neves,J.C Valente. Fire Safety Journal . 2000 (2)

The effect of axial restraint on the fire resistance of steel columns [J] . Faris A Ali,Paul Shepherd,Michael Randall,Ian W Simms,David J O’Connor,Ian Burgess. Journal of Constructional Steel Research . 1998 (1)

The behaviour of steel frames subject to fire [J] . Y.C. Wang,T. Lennon,D.B. Moore. Journal of Constructional Steel Research . 1995 (3)

浏览量

190

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

预应力CFRP筋混凝土梁的抗火试验研究

预应力轴心受拉钢构件抗火性能研究（Ⅲ）:实用设计方法

考虑高温蠕变影响的钢梁抗火性能

局部火灾下正放四角锥网架中杆件约束效应分析

约束PEC柱（绕强轴）的耐火性能及影响因素分析