A numerical approach for modeling the fire induced restraint effects in reinforced concrete beams

被引：86

作者：

Dwaikat, M. B. ^{[1
]}

Kodur, V. K. R. ^{[1
]}

机构：

[1] Michigan State Univ, E Lansing, MI 48824 USA

来源：

FIRE SAFETY JOURNAL | 2008年 / 43卷 / 04期

关键词：

fire resistance; computer program; fire induced restraint; high temperature; high-strength concrete; reinforced concrete beams; spalling; numerical model;

D O I：

10.1016/j.firesaf.2007.08.003

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this paper, a model to predict the influence of fire induced restraints on the fire resistance of reinforced concrete (RC) beams is presented. The three stages, associated with the fire growth, thermal and structural analysis, for the calculation of fire resistance of the RC beams are explained. A simplified approach to account for spalling under fire conditions is incorporated into the model. The validity of the numerical model is established by comparing the predictions from the computer program with results from full-scale fire resistance tests. The program is used to conduct two case studies to investigate the influence of both the rotational and the axial restraint on the fire response of the RC beams. Through these case studies, it is shown that the restraint, both rotational and axial, has significant influence on the fire resistance of the RC beams. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：291 / 307

页数：17

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