Behaviour of Grade 8.8 bolts under natural fire conditions-Tests and model

被引：47
|
作者：
Hanus, F. [1 ]
Zilli, G.
Franssen, J. -M. [1 ]
机构：
[1] Univ Liege, Dept Struct, Engng, Belgium
来源：
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH | 2011年 / 67卷 / 08期
关键词：
Bolts; Material law; Non-reversibility; Cooling; Natural fire;
D O I：
10.1016/j.jcsr.2011.03.012
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Recent full-scale experimental tests performed on steel and composite structures have demonstrated that the presence of tensile forces in axially-restrained beams during the cooling phase of a fire could lead to bolt failures. In order to understand this observation and design structures that are not prone to such a failure mode, it is essential to have a deep knowledge of the material behaviour of all the components, including bolts, during both the heating and cooling phase. In the present article, the test set-ups and the results of the tensile and shear tests performed at the Centro Sviluppo Materiali (Italy) on Grade 8.8 bolts under heating cooling cycles are described. Then, material laws are defined for characterising the mechanical behaviour of Grade 8.8 bolts under heating and cooling phases. These laws account for the non-reversibility of the mechanical properties of Grade 8.8 bolts. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1292 / 1298
页数：7
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