A time-variant reliability analysis of steel structures at high temperature

被引：1
|
作者：
Wang, Zhenqing [1 ]
Qiao, Mu [1 ]
Han, Yulai [1 ]
Zhu, Dalei [1 ]
机构：
[1] Harbin Engn Univ, Coll Civil Engn, Harbin 150001, Peoples R China
来源：
INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS | 2010年 / 33卷 / 3-4期
关键词：
D O I：
10.3233/JAE-2010-1291
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
For the large deterioration of the mechanical properties of steel under high temperature, the resistance of steel members will be largely discounted. The calculations of yield strength and Young's modulus of steel under high temperature recommended by ECCS have been employed in this paper. A simple and feasible time-variant model of the resistance of steel members and a reliability index analysis method of steel structure under fire has been given. An example, which illustrates the action of ISO834 temperature rising curve on the time-variant reliability index of a steel beam have presented. The results showed that the reliability index of a steel beam decreased with the increasing of the fire action time. When the time of fire action exceeds 138 minutes, the reliability index of a steel beam is less than the minimum value stipulated by the norm.
引用
收藏
页码：1607 / 1613
页数：7
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