Reliability analysis of structural stainless steel design provisions

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Title: Reliability analysis of structural stainless steel design provisions
Authors: Afshan, S
Francis, P
Baddoo, NR
Gardner, L
Item Type: Journal Article
Abstract: Since the establishment of the Eurocode design provisions for structural stainless steel, a considerable amount of both statistical material data and experimental results on structural elements has been generated. In light of this, the current partial resistance factors recommended in EN 1993-1-4 for the design of stainless steel elements are re-evaluated. First, following an analysis of material data from key stainless steel producers, representative values of the over-strength and the coefficient of variation (COV) of the material yield strength and ultimate tensile strength were established. For yield strength, over-strength values and COVs of 1.3 and 0.060 for austenitic, 1.1 and 0.030 for duplex and 1.2 and 0.045 for ferritic stainless steels were determined. For the ultimate tensile strength, an over-strength value of 1.1 was found to be suitable for all stainless steel grades, and COV values of 0.035 for the austenitic and duplex grades and 0.05 for the ferritic grade were proposed. For the variability of the geometric properties, a COV value of 0.05 was recommended. Analysis of available experimental results based on the First Order Reliability Method (FORM), set out in EN 1990 Annex D, and utilising the derived statistical material parameters, revealed that the current recommended partial resistance factors in EN 1993-1-4 (γM0 = γM1 = 1.1 and γM2 = 1.25) cannot generally be reduced, and in some cases, modified design resistance equations are required, if the current safety factors are to be maintained.
Issue Date: 15-Aug-2015
Date of Acceptance: 3-Aug-2015
URI: http://hdl.handle.net/10044/1/38982
DOI: http://dx.doi.org/10.1016/j.jcsr.2015.08.012
ISSN: 1873-5983
Publisher: Elsevier
Start Page: 293
End Page: 304
Journal / Book Title: Journal of Constructional Steel Research
Volume: 114
Copyright Statement: © 2015 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: Science & Technology
Technology
Construction & Building Technology
Engineering, Civil
Engineering
Material over-strength
Partial factors
Reliability
Stainless steel
Statistical parameters
Variability
HOLLOW SECTIONS
TUBULAR MEMBERS
COMPRESSION MEMBERS
PLATE GIRDERS
STRENGTH
COLUMNS
BEAMS
BEHAVIOR
TESTS
Civil Engineering
0905 Civil Engineering
Publication Status: Published
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering



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