Analysis of nonlinear behavior of steel frames under local fire conditions

被引：0
|
作者：
Zu-Yan, S [1 ]
Jin-Cheng, Z [1 ]
机构：
[1] Tongji Univ, Coll Civil Engn, Shanghai 200092, Peoples R China
来源：
STABILITY AND DUCTILITY OF STEEL STRUCTURES | 1998年
关键词：
nonlinear analysis; steel frame; fire condition; finite element method; high temperature; ultimate load; fire test;
D O I：
10.1016/B978-008043320-2/50010-1
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A finite element approach is presented in this paper for analysis of nonlinear behaviour of steel frames under local fire conditions. The effects of geometric nonlinearity, temperature dependent material nonlinearity and variations in temperature distribution across sections of frame members are considered. Based on the principle of virtual work, the temperature - induced load vector and temperature - dependent geometric stiffness matrix are derived. Following the common procedure of finite element methods, a computer program is developed for calculating either the ultimate load at a specified temperature or critical temperature at a specified load level. The effectiveness of the approach is verified by a good prediction on the behavior of a steel frame experienced fire experiment.
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页码：91 / 102
页数：12
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