Uncertainty in Resistance Models for Steel Members

Resistance of steel structures is primarily dependent on material properties, geometry and uncertainties related to an applied model. While materials and geometry can be relatively well described, the uncertainties in resistance models are not yet well understood. In many cases significant efforts...

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Main Authors: Nadolski Vitali, Sykora Miroslav
Format: Article
Language:English
Published: Sciendo 2014-12-01
Series:Transactions of the VŠB: Technical University of Ostrava, Civil Engineering Series
Subjects:
Online Access:http://www.degruyter.com/view/j/tvsb.2014.14.issue-2/tvsb-2014-0028/tvsb-2014-0028.xml?format=INT
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spelling doaj-a127dfc262fc405ba8daedc6436e7f5f2020-11-24T21:33:54ZengSciendoTransactions of the VŠB: Technical University of Ostrava, Civil Engineering Series1804-48242014-12-01142263710.2478/tvsb-2014-0028tvsb-2014-0028Uncertainty in Resistance Models for Steel MembersNadolski Vitali0Sykora Miroslav1Department of Steel and Timber Structures, Faculty of Civil Engineering, BNTU – Belarusian National Technical University, ave. Nezavisimosty 65, 220013 Minsk, Republic of Belarus, phone: (+375) 259 997 99Department of Structural Reliability, Klokner Institute, Czech Technical University in Prague, Solinova 7, 16608 Prague, Czech Republic Resistance of steel structures is primarily dependent on material properties, geometry and uncertainties related to an applied model. While materials and geometry can be relatively well described, the uncertainties in resistance models are not yet well understood. In many cases significant efforts are spent to improve resistance models and reduce uncertainty associated with outcomes of the model. However, these achievements are then inadequately reflected in the values of partial factors. That is why the present paper clarifies a model uncertainty and its quantification. Initially a general concept of the model uncertainty is proposed. Influences affecting results obtained by tests and models and influences of actual structural conditions are overviewed. Statistical characteristics of the uncertainties in resistance of steel members are then provided. Simple engineering formulas, mostly based on the EN 1993-1-1 models, are taken into account. To facilitate practical applications, the partial factors for the model uncertainties are derived using a semiprobabilistic approach.http://www.degruyter.com/view/j/tvsb.2014.14.issue-2/tvsb-2014-0028/tvsb-2014-0028.xml?format=INTModel uncertaintysteel structurespartial factorreliabilityresistance
collection DOAJ
language English
format Article
sources DOAJ
author Nadolski Vitali
Sykora Miroslav
spellingShingle Nadolski Vitali
Sykora Miroslav
Uncertainty in Resistance Models for Steel Members
Transactions of the VŠB: Technical University of Ostrava, Civil Engineering Series
Model uncertainty
steel structures
partial factor
reliability
resistance
author_facet Nadolski Vitali
Sykora Miroslav
author_sort Nadolski Vitali
title Uncertainty in Resistance Models for Steel Members
title_short Uncertainty in Resistance Models for Steel Members
title_full Uncertainty in Resistance Models for Steel Members
title_fullStr Uncertainty in Resistance Models for Steel Members
title_full_unstemmed Uncertainty in Resistance Models for Steel Members
title_sort uncertainty in resistance models for steel members
publisher Sciendo
series Transactions of the VŠB: Technical University of Ostrava, Civil Engineering Series
issn 1804-4824
publishDate 2014-12-01
description Resistance of steel structures is primarily dependent on material properties, geometry and uncertainties related to an applied model. While materials and geometry can be relatively well described, the uncertainties in resistance models are not yet well understood. In many cases significant efforts are spent to improve resistance models and reduce uncertainty associated with outcomes of the model. However, these achievements are then inadequately reflected in the values of partial factors. That is why the present paper clarifies a model uncertainty and its quantification. Initially a general concept of the model uncertainty is proposed. Influences affecting results obtained by tests and models and influences of actual structural conditions are overviewed. Statistical characteristics of the uncertainties in resistance of steel members are then provided. Simple engineering formulas, mostly based on the EN 1993-1-1 models, are taken into account. To facilitate practical applications, the partial factors for the model uncertainties are derived using a semiprobabilistic approach.
topic Model uncertainty
steel structures
partial factor
reliability
resistance
url http://www.degruyter.com/view/j/tvsb.2014.14.issue-2/tvsb-2014-0028/tvsb-2014-0028.xml?format=INT
work_keys_str_mv AT nadolskivitali uncertaintyinresistancemodelsforsteelmembers
AT sykoramiroslav uncertaintyinresistancemodelsforsteelmembers
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