Axial behaviour of prestressed high strength steel tubular members

Title: Axial behaviour of prestressed high strength steel tubular members
Authors: Wang, J
Afshan, S
Gardner, L
Item Type: Journal Article
Abstract: The axial behaviour and design of hot-finished high strength steel tubular elements with internal prestressing cables, representing the chord members in prestressed trusses, are examined in this paper. A comprehensive programme of experiments and numerical modelling was performed, the results of which were combined to develop resistance expressions for the design of prestressed high strength steel members. A total of 12 tensile and 10 compressive member tests were carried out, with the key variables examined being the steel grade (S460 and S690), the initial prestress level and the presence of grout. Numerical models were developed to replicate the structural response of the compressive member tests and subsequently used to generate parametric results, where the member slenderness, size of prestressing cable, applied prestress level, steel grade (S460 or S690), and grout condition (grouted and non-grouted), were varied. The presence of cables was shown to enhance the tensile capacity of the members, while the addition of prestress resulted in extended elastic range. In compression, the effect of prestress was detrimental, and a modified Perry-Robertson method, developed in [1], was extended to hot-finished high strength steel members.
Issue Date: 17-Mar-2017
Date of Acceptance: 1-Mar-2017
URI: http://hdl.handle.net/10044/1/49331
DOI: https://dx.doi.org/10.1016/j.jcsr.2017.03.002
ISSN: 0143-974X
Publisher: ELSEVIER
Start Page: 547
End Page: 563
Journal / Book Title: JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
Volume: 133
Copyright Statement: © 2017 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: Commission of the European Communities
Funder's Grant Number: RFSR-CT-2012-00028
Keywords: Science & Technology
Technology
Construction & Building Technology
Engineering, Civil
Engineering
High strength steels
Prestress
SHS
Hollow sections
Tension
Compression
Cable-in-tube system
Grout
STRESSED-ARCH FRAMES
STAYED COLUMNS
COMPOSITE BEAMS
POSTTENSIONED TRUSSES
POSTBUCKLING BEHAVIOR
STUB COLUMNS
DESIGN
CONCRETE
ERECTION
ELEMENTS
0905 Civil Engineering
Civil Engineering
Publication Status: Published
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering



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