Material properties and compressive local buckling response of high strength steel square and rectangular hollow sections
Material properties and compressive local buckling response of high strength steel square and rectangular hollow sections
An experimental investigation into the structural performance of compressed high strength steel (HSS) square and rectangular hollow sections is described in this paper. Both hot-rolled and cold-formed HSS sections were examined. In total six S460NH and five S690QH hot-rolled section sizes and three S500MC, two S700MC and four S960QC cold-formed section sizes were tested. The experimental programme comprised tensile coupon tests on flat and corner material, measurements of geometric imperfections, full cross-section tensile tests and stub column tests. The results of the experiments presented in this paper have been combined with other available test data on high strength steel sections, and used to assess the existing design guidelines for high strength steels given in Eurocode 3. The focus has been on the material ductility requirements, the Class 3 slenderness limit for internal elements in compression and the effective width formula for Class 4 internal elements in compression.Reliability assessments of the Class 3 slenderness limit (both the current value of 42 and a proposed value of 38) and the effective width formula for Class 4 internal elements in compression were carried out. The analysis indicated that, based on the assembled test data considered in this study, and the assumptions made regarding the statistical distributions of material and geometric properties, a partial safety factor greater than unity is required for HSS. Similar findings have also recently been presented for ordinary strength steels.
Cold-formed sections, Ductility, Effective width equation, Experiments, High strength steel, Hot-finished sections, Local buckling, Slenderness limits, Testing
297-315
Wang, J.
53d8d8bd-3c17-406e-9acf-961cc86b9a00
Afshan, S.
68dcdcac-c2aa-4c09-951c-da4992e72086
Schillo, N.
834de077-597c-45ab-99d0-917b7befcb0e
Theofanous, M.
fd9bc1b5-4150-492c-8fed-c722bb1dde7a
Feldmann, M.
9e68378d-ef0f-43d6-8c01-20ab2c1b32a3
Gardner, L.
2d5fc7ca-efd9-425a-981c-73d3937aca08
1 January 2017
Wang, J.
53d8d8bd-3c17-406e-9acf-961cc86b9a00
Afshan, S.
68dcdcac-c2aa-4c09-951c-da4992e72086
Schillo, N.
834de077-597c-45ab-99d0-917b7befcb0e
Theofanous, M.
fd9bc1b5-4150-492c-8fed-c722bb1dde7a
Feldmann, M.
9e68378d-ef0f-43d6-8c01-20ab2c1b32a3
Gardner, L.
2d5fc7ca-efd9-425a-981c-73d3937aca08
Wang, J., Afshan, S., Schillo, N., Theofanous, M., Feldmann, M. and Gardner, L.
(2017)
Material properties and compressive local buckling response of high strength steel square and rectangular hollow sections.
Engineering Structures, 130, .
(doi:10.1016/j.engstruct.2016.10.023).
Abstract
An experimental investigation into the structural performance of compressed high strength steel (HSS) square and rectangular hollow sections is described in this paper. Both hot-rolled and cold-formed HSS sections were examined. In total six S460NH and five S690QH hot-rolled section sizes and three S500MC, two S700MC and four S960QC cold-formed section sizes were tested. The experimental programme comprised tensile coupon tests on flat and corner material, measurements of geometric imperfections, full cross-section tensile tests and stub column tests. The results of the experiments presented in this paper have been combined with other available test data on high strength steel sections, and used to assess the existing design guidelines for high strength steels given in Eurocode 3. The focus has been on the material ductility requirements, the Class 3 slenderness limit for internal elements in compression and the effective width formula for Class 4 internal elements in compression.Reliability assessments of the Class 3 slenderness limit (both the current value of 42 and a proposed value of 38) and the effective width formula for Class 4 internal elements in compression were carried out. The analysis indicated that, based on the assembled test data considered in this study, and the assumptions made regarding the statistical distributions of material and geometric properties, a partial safety factor greater than unity is required for HSS. Similar findings have also recently been presented for ordinary strength steels.
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More information
Accepted/In Press date: 14 October 2016
e-pub ahead of print date: 10 November 2016
Published date: 1 January 2017
Keywords:
Cold-formed sections, Ductility, Effective width equation, Experiments, High strength steel, Hot-finished sections, Local buckling, Slenderness limits, Testing
Identifiers
Local EPrints ID: 429866
URI: http://eprints.soton.ac.uk/id/eprint/429866
ISSN: 0141-0296
PURE UUID: db507ad5-9211-4b90-a2cf-f1aa172e5186
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Date deposited: 08 Apr 2019 16:30
Last modified: 18 Mar 2024 03:52
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Contributors
Author:
J. Wang
Author:
N. Schillo
Author:
M. Theofanous
Author:
M. Feldmann
Author:
L. Gardner
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