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On Problems of Characteristic and Nominal Values of Steel Yield Strength and Their Influence on Design Resistance of Steel Structural Members

Published online by Cambridge University Press:  30 July 2014

Marcela Karmazínová  and
Jindrich J. Melcher
Marcela Karmazínová
Affiliation:
Brno University of Technology, Faculty of Civil Engineering, Brno, Czech Republic
Jindrich J. Melcher
Affiliation:
Brno University of Technology, Faculty of Civil Engineering, Brno, Czech Republic
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Abstract

The paper deals with the problems of mechanical properties of structural steels used for load-carrying structures of civil engineering constructions. The attention is mainly paid to the values of yield strength from the viewpoint of the design concept of European Standards, i.e. Eurocode 3 for the design of steel structures, with respect to the structural reliability given by the failure probability. In the case of other materials, concrete or timber for example, characteristic and design values of strength given by the corresponding failure probability are used in the design procedures, where the partial safety factor of material is γM > 1.0. However, in the case of steel, the nominal values instead of characteristic values of steel yield strength are utilized in the structural design procedure, with the partial safety factor for material of γM = 1.0. These values have been derived based on the statistical and probabilistic evaluation of the data sets of actual material properties obtained from various recent steel producers. The paper presents the brief information on the results of the study oriented to the influence of the nominal or characteristic value of yield strength on the design resistance, which is shown on the examples of the member subjected to tension and bending moment, respectively. The influence mentioned is shown using the examples of structural steels used in constructions of the age of about 40 and 100 years.

Keywords

strengthmetalstructural
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1611: Symposium 4A – Advanced Structural Materials--2013 , 2014 , pp. 61 - 67
Copyright
Copyright © Materials Research Society 2014 

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References

REFERENCES

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