The effect of push-out of perimeter building columns on their survival in fire

被引：0

作者：

Cai, J ^{[1
]}

Burgess, I ^{[1
]}

Plank, R ^{[1
]}

机构：

[1] Univ Sheffield, Dept Civil & Struct Engn, Sheffield S10 2TN, S Yorkshire, England

来源：

PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON STEEL STRUCTURES OF THE 2000'S | 2000年

关键词：

column sub-frame; stability; buckling; fire-protection; finite element; thermal expansion; stiffness;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

There has been some concern that column distortion due to the expansion of beams exposed to fire may reduce the axial load capacity to such an extent that failure occurs in the column, even if it is protected from the fire. In this paper the structural analysis software VULCAN, which has been developed to perform non-linear analysis of three-dimensional frames and sub-frames subjected to fire, has been used to predict the behaviour of a range of column sub-frames in fire scenarios. The effect of thermal expansion of unprotected beams on the critical temperatures of edge columns has been studied for different levels of axial load. These preliminary results indicate that the reduction in column capacity is not critical, particularly when a composite frame is used.

引用

页码：345 / 350

页数：4