Background of Target Reliability Levels for Existing Structures
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Détails bibliographiques
| Auteur(s): |
Olli Asp
Anssi Laaksonen |
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| Médium: | papier de conférence | ||||
| Langue(s): | anglais | ||||
| Conférence: | IABSE Workshop: Safety, Failures and Robustness of Large Structures, Helsinki, Finland, 14-15 February 2013 | ||||
| Publié dans: | IABSE Workshop, 14-15 February 2013, Helsinki | ||||
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| Page(s): | 252-259 | ||||
| Nombre total de pages (du PDF): | 8 | ||||
| Année: | 2013 | ||||
| DOI: | 10.2749/222137813807018818 | ||||
| Abstrait: |
The structural safety of existing bridges can be confirmed by a bearing capacity assessment. The conventional method of evaluating a bridge is the partial safety factor method. A more sophisticated way to assess bearing capacity is the reliability analysis. It allows calculating the reliability index of the structure. The calculated reliability index should be compared to the target reliability index to determine if the structure and related risks are acceptable. Values for target reliability indices are proposed in codes. Structure and load type specific target reliability indices can also be determined. For existing structures, it is possible to calculate more accurate target reliability indices related to the consequences of failure. Increased probability of failure due to lower reliability indices can be tolerated if the consequences of failure are limited and an economic benefit is gained. |
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