Parametric Studies on Critical Temperature of Restrained Steel Column in a Fire

李国强; 陈琛

doi:10.13409/j.cnki.jdpme.2011.06.001

您当前的位置：

首页 >

文章列表页 >

Parametric Studies on Critical Temperature of Restrained Steel Column in a Fire

更新时间：2025-12-11

- Parametric Studies on Critical Temperature of Restrained Steel Column in a Fire
- Vol. 31, Issue 6, Pages: 603-608(2011)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.2011.06.001
  CLC： U391
- Published：2011
- 稿件说明：
移动端阅览
[1]李国强,陈琛.火灾下约束钢柱临界温度的参数分析[J].防灾减灾工程学报,2011,31(06):603-608.

李国强, 陈琛. Parametric Studies on Critical Temperature of Restrained Steel Column in a Fire[J]. 2011, 31(6): 603-608.
[1]李国强,陈琛.火灾下约束钢柱临界温度的参数分析[J].防灾减灾工程学报,2011,31(06):603-608. DOI： 10.13409/j.cnki.jdpme.2011.06.001.

李国强, 陈琛. Parametric Studies on Critical Temperature of Restrained Steel Column in a Fire[J]. 2011, 31(6): 603-608. DOI： 10.13409/j.cnki.jdpme.2011.06.001.

摘要

利用经实验验证过的ABAQUS有限元模型对轴力和弯矩共同作用下的约束钢柱进行了参数分析。以钢柱的屈曲温度和临界温度作为主要的评价指标

主要考虑了轴力荷载比、弯矩荷载比、轴向约束刚度比、转动约束刚度比、长细比和钢柱端部弯矩比等参数的影响

并且对不同参数之间的耦合性进行了分析。参数分析结果表明

轴向约束刚度的增大将会明显降低约束钢柱的屈曲温度

但是对其临界温度的影响相对较小;端部弯矩比对钢柱的临界温度影响很小;当钢柱的轴力荷载比和弯矩荷载比较小、轴向约束刚度比和长细比较大时

考虑屈曲后性能可以显著提高钢柱的抗火能力。

Abstract

This paper investigates the critical temperature of a restrained steel column in a fire by using the ABAQUS finite element method model.Results are presented by the buckling temperatures and critical temperatures of steel columns.The influence of axial load

bending moment

axial restraint

rotational restraint

slenderness and end moment ratio is considered in the parametric study.The coupling between parameters has also been analyzed.Results of parametric study show that:①The axial restraint will reduce the buckling temperature of the restrained steel column significantly

but the critical temperature is scarcely affected by the restraint;②The end moment ratio has a very small influence on the critical temperature of steel columns;③The performance of steel column in fire will be much better if the post-buckling behavior is considered

when the axial load ratio and bending moment ratio of the column are small and the slenderness of the column is large.

关键词

Keywords

references

轴力和弯矩共同作用下的约束钢柱受火性能分析 [J]. 王培军,李国强,王永昌. 同济大学学报(自然科学版) . 2010(02)

Fire resistance of steel columns with elastically restrained axial elongation and bending [J] . Joaquim C Valente,I.Cabrita Neves. Journal of Constructional Steel Research . 1999 (3)

Views

195

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Simplified Calculation Method for Critical Temperature of Restrained Steel Column in Fire

Finite Element Analysis of Mechanical Properties of Pile-cap Connections for Prestressed Concrete Solid Pile Using Snap-in Mechanical Connection

Numerical Study on Ground Displacement Induced by Shield Tunneling

Determination of Computational Region of Pipe-soil Interaction System under the Reverse Fault Movement

Study on Computation Method of the Ultimate Bearing Capacity of Two-layer Foundation with Sand over Soft Clay

Related Author

乔燕

李爱群

缪长青

孙传智

李琳

崔惟超

董光辉

张建新

Related Institution

No data

⁰