Calibrating partial safety factors in line with required reliability levels for concrete structures
| Autor: | Yi Zhang, François Toutlemonde |
|---|---|
| Přispěvatelé: | Groupe Eiffage, Département Matériaux et Structures (MAST), Université Gustave Eiffel |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
EUROPE Computer science PROBABILITE 0211 other engineering and technologies SEMIPROBALISTIC METHOD 020101 civil engineering 02 engineering and technology Eurocode 0201 civil engineering Probability of failure CONCRETE STRUCTURES RUPTURE BETON EUROCODE PROBABILITE DE DEFAILLANCE OUVRAGE D&apos Reliability (statistics) PROBALITY OF FAILURE 021101 geological & geomatics engineering Civil and Structural Engineering FIABILITE DES STRUCTURES BETON ARME Failure probability DURABILITE Reliability engineering [SPI.MECA.STRU]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of the structures [physics.class-ph] PARTIAL SAFETY FACTORS ART (GEN) RELIABILITY PRESCRIPTION TECHNIQUE (UN/ECE) Line (text file) ART |
| Zdroj: | European Journal of Environmental and Civil Engineering European Journal of Environmental and Civil Engineering, Taylor & Francis, 2020, 18 p. ⟨10.1080/19648189.2020.1824820⟩ |
| ISSN: | 1964-8189 2116-7214 |
| DOI: | 10.1080/19648189.2020.1824820⟩ |
| Popis: | In the Eurocodes, the notion of reliability is presented and expressed in terms of the target failure probability. The three reliability classes (RC1, RC2 and RC3) are based on assumed consequences of failure and exposure of construction works to potential hazards, their levels of safety and probability of failure are represented by the reliability index b. The normal (most current) situation in the ultimate limit state is associated with RC2 reliability class, which leads to partial safety factors associated to a failure probability of 5105 (reliability index b?3.89) over a 50-year reference period. Certain exceptional structures are associated to very high stakes: because their failure would cause such unacceptable consequences, these may in turn require a lower failure probability (typically ranging from 107 to 1012 per 50 years) during their design working lifespan. For these more restrictive situations (reliability class higher than RC3), this article exemplifies a simplified method for calibrating partial safety factors on materials and actions, as well as model uncertainties, according to Eurocodes. A discussion is offered at the end of this article to consider the combined use of this simplified method with other measures to ensure the required reliability levels for concrete structures. |
| Databáze: | OpenAIRE |
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