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Design of prestressed cold-formed steel beams
File(s)
TWST_Hadjipantelis_2019.pdf (2.76 MB)
Accepted version
Author(s)
Hadjipantelis, N
Gardner, L
Wadee, MA
Type
Journal Article
Abstract
Structural design rules for prestressed cold-formed steel beams, considering both the prestressing and imposed vertical loading stages, are presented herein. In the proposed approach, the cold-formed steel member is designed as a beam-column using linear interaction equations in conjunction with the Direct Strength Method (DSM), while the prestressed cable is designed by ensuring that its tensile capacity is not violated during the two loading stages. In the present paper, the design approach and the failure criteria, which define the permissible design zone for the prestressed system, are first introduced. The suitability of the design recommendations is then assessed by comparing a set of parametric finite element (FE) results for several combinations of prestress levels, beam geometries and cable sizes, with the corresponding design predictions. Finally, following reliability analysis, the implementation of the design recommendations is illustrated through a practical worked example.
Date Issued
2019-07-01
Date Acceptance
2019-02-21
Citation
Thin-Walled Structures, 2019, 140, pp.565-578
URI
DOI
ISSN
0263-8231
Publisher
Elsevier
Start Page
565
End Page
578
Journal / Book Title
Thin-Walled Structures
Volume
140
Copyright Statement
© 2019 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/.
Sponsor
Imperial College London
Subjects
Science & Technology
Technology
Engineering, Civil
Engineering
Beam-columns
Cold-formed steel beams
Design recommendations
Direct Strength Method
Finite element modelling
Interaction equations
Prestressing
FINITE STRIP METHOD
EXPERIMENTAL RESPONSE
BEHAVIOR
Civil Engineering
0901 Aerospace Engineering
0905 Civil Engineering
0913 Mechanical Engineering
Publication Status
Published
Date Publish Online
2019-04-16