Comparison of approaches to reliability verification of existing steel structures
Vitali Nadolski
nadolskivv@gmail.comDepartment of Structural Reliability; Czech Technical University in Prague; (Czechia)
https://orcid.org/0000-0002-4211-7843
Milan Holicky
Department of Structural Reliability; Czech Technical University in Prague; (Czechia)
https://orcid.org/0000-0001-5325-6470
Miroslav Sykora
Department of Structural Reliability; Czech Technical University in Prague; (Czechia)
https://orcid.org/0000-0001-9346-3204
Viktar Tur
Department of Building Structures; Bialystok University of Technology; (Poland)
https://orcid.org/0000-0001-6046-1974
Abstract
Many existing steel structures are exposed to degradation due to corrosion or fatigue and to increasing loads. Their reliability assessment is then needed. The key question is whether a particular structure can be preserved ‘as it is’, or needs to be strengthened, or whether it needs to be replaced. Unnecessary replacements of existing structures may be avoided and the remaining service life of existing steel structures may be authorized by: using advanced reliability verification techniques, optimizing target reliability, and obtaining data for a specific site or structure. In this contribution, the application of advanced reliability approaches is illustrated by the assessment of an existing steel structure. The case study demonstrates that such approaches may significantly improve assessment and allow to increase the load-bearing capacity of the structure (in the case under investigation by 10 to 20%). Improvements in reliability assessment are attributed to the use of an optimal target reliability level, case-specific statistical parameters and probabilistic distributions of the basic variables, and adjusted partial factors.
Supporting Agencies
Keywords:
Existing structures, adjusted partial factors, probabilistic approaches, reliabilityReferences
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Authors
Vitali Nadolskinadolskivv@gmail.com
Department of Structural Reliability; Czech Technical University in Prague; Czechia
https://orcid.org/0000-0002-4211-7843
Authors
Milan HolickyDepartment of Structural Reliability; Czech Technical University in Prague; Czechia
https://orcid.org/0000-0001-5325-6470
Authors
Miroslav SykoraDepartment of Structural Reliability; Czech Technical University in Prague; Czechia
https://orcid.org/0000-0001-9346-3204
Authors
Viktar TurDepartment of Building Structures; Bialystok University of Technology; Poland
https://orcid.org/0000-0001-6046-1974
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