An improved tie force method for progressive collapse resistance design of reinforced concrete frame structures

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Title An improved tie force method for progressive collapse resistance design of reinforced concrete frame structures
Author Li, Yi; Lu, Xinzheng; Guan, Hong; Ye, Lieping
Journal Name Engineering Structures
Editor P.L. Gould
Year Published 2011
Place of publication United Kingdom
Publisher Elsevier
Abstract Progressive collapse of structures refers to local damage due to occasional and abnormal loads, which in turn leads to the development of a chain reaction mechanism and progressive and catastrophic failure. The tie force (TF) method is one of the major design techniques for resisting progressive collapse, whereby a statically indeterminate structure is designed through a locally simplified determinate structure by assumed failure mode. The method is also adopted by the BS8110-1:1997, Eurocode 1, and DoD 2005. Due to the overly simplified analytical model used in the current practical codes, it is necessary to further investigate the reliability of the code predictions. In this research, a numerical study on two reinforced concrete (RC) frame structures demonstrates that the current TF method is inadequate in increasing the progressive collapse resistance. In view of this, the fundamental principles inherent in the current TF method are examined in some detail. It is found that the current method fails to consider such important factors as load redistribution in three dimensions, dynamic effect, and internal force correction. As such, an improved TF method is proposed in this study. The applicability and reliability of the proposed method is verified through numerical design examples.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2011 Elsevier. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Volume 33
Issue Number 10
Page from 2931
Page to 2942
ISSN 0141-0296
Date Accessioned 2011-11-15
Language en_US
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Structural Engineering
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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