Simple Analysis of Framed-Tube Structures with Multiple Internal Tubes

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Title Simple Analysis of Framed-Tube Structures with Multiple Internal Tubes
Author Lee, Kang-Kun; Loo, Yew-Chaye; Guan, Hong
Journal Name Journal of Structural Engineering
Editor C. Dale Buckner
Year Published 2001
Place of publication USA
Publisher American Society of Civil Engineers
Abstract A framed-tube system with multiple internal tubes is analyzed using an orthotropic box beam analogy approach in which each tube is individually modeled by a box beam that accounts for the flexural and shear deformations as well as the shear-lag effects. The method idealizes the tubes-in-tube structure as a system of equivalent multiple tubes, each composed of four equivalent orthotropic plate panels capable of carrying axial loads and shear forces. By simplifying the assumptions in relation to the patterns of strain distributions in external and internal tubes, the structural analysis is reduced to the mere solution of a single second-order linear differential equation. The proposed method, which is intended to be used as a tool for preliminary design purposes, can be applied for the analysis of framed-tube structures with single and multiple internal tubes as well as those without internal tubes. The simplicity and accuracy of the proposed method is demonstrated through the analysis of three framed-tube structures (of different heights) without internal tubes. A 3D frame analysis program and two existing approximate methods are also included in the comparative study. Furthermore, three other framedtube structures with one, two, and three internal tubes are analyzed to verify the applicability and reliability of the proposed method.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2001 ASCE. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.
Volume 127
Issue Number 4
Page from 450
Page to 460
ISSN 0733-9445
Date Accessioned 2002-04-03
Language en_AU
Faculty Faculty of Science, Environment, Engineering and Technology
Subject PRE2009-Structural Engineering
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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