Nonlinear Analysis of Plane Steel Frames under Different  Stress-Temperature Paths in Fire

李亮文; 赵金城

您当前的位置：

首页 >

文章列表页 >

Nonlinear Analysis of Plane Steel Frames under Different Stress-Temperature Paths in Fire

更新时间：2025-12-11

- Nonlinear Analysis of Plane Steel Frames under Different Stress-Temperature Paths in Fire
- Issue 2, Pages: 117-123(2005)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：
  CLC： 928.7
- Published：2005
- 稿件说明：
移动端阅览
[1]李亮文,赵金城.不同应力—温度路径下平面钢框架火灾反应的非线性分析[J].防灾减灾工程学报,2005(02):117-123.

李亮文, 赵金城. Nonlinear Analysis of Plane Steel Frames under Different Stress-Temperature Paths in Fire[J]. 2005, (2): 117-123.
[1]李亮文,赵金城.不同应力—温度路径下平面钢框架火灾反应的非线性分析[J].防灾减灾工程学报,2005(02):117-123. DOI：

李亮文, 赵金城. Nonlinear Analysis of Plane Steel Frames under Different Stress-Temperature Paths in Fire[J]. 2005, (2): 117-123. DOI：

摘要

采用考虑温度—应力路径影响的高温下钢材的应力—应变关系

对火灾中钢框架结构的反应进行了非线性分析

旨在尝试提出一种更加符合实际情况的钢结构抗火反应分析新方法。根据已有的试验结果

对高温材性试验数据进行了回归分析

得到了Q235钢在升温恒载、升温加载、升温降载3种基本应力—温度路径下单向拉压时的本构关系式

进而得到不同应力—温度路径下热非弹性应力—应变增量关系式。利用虚功原理

推导出不同应力—温度路径下平面钢框架有限元分析的单元热非弹性刚度方程的显式。同时

对增量迭代法进行了修正

提出升温恒载路径、升温加载路径及升温降载路径3种路径之间切换的判断准则

为结构抗火全过程分析提供了理论基础。

Abstract

In this paper

the nonlinear analysis of steel frame in fire is carried out by adopting a new constitutive relationship which takes account of the temperature-stress path. The aim of this study is to put forward a new and more reasonable method for analyzing plane steel frames in fire. According to the experimental data

the constitutive relation of steel Q235 is obtained through regression analysis under three kinds of stress-strain paths

that is

heating and constant-load

heating and loading

heating and unloading. Then the incremental expressions of stress-strain relations for different stress-temperature paths are obtained. Based on the principle of virtual work

the non-elastic thermal elemental stiffness equations of plane steel frames for finite element analysis under different stress-temperature paths are derived. Moreover

the incremental iteration method is modified and a criterion is proposed for selection of one of the three kinds of stress-strain-paths. This study will provide a theoretical basis for the whole process analysis of steel frame in fire.

关键词

Keywords

references

钢结构抗火分析中的材性模型 [J]. 赵金城,沈祖炎. 工业建筑 . 1996(09)

计算固体力学[M]. 上海交通大学出版社 , 刘正兴等编著, 2000

计算结构力学[M]. 上海科学技术出版社 , 朱慈勉等编著, 1992

Views

187

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Numerical Simulation on the Impact Response of a Steel Frame in Fire

Research on Component Joint Models of Semi-rigid Joint Model with Top and Seat Angles and Double Web Angles Under Progressive Collapse

Study on the Hysteretic Behavior of Side Plate Reinforced Beam-to-column Connections in Steel Frame

Nonlinear Analysis of Structures with Negative Stiffness Based on Force Analogy Method

Response Behavior of High Temperature and Fully Constrained Steel Beam Rapidly Cooled by Spray Water in Fire

Related Author

丛珊

席丰

谭政

钟炜辉

李超范

马江萍

徐莹璐

张驰

Related Institution

No data

⁰