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Background of Target Reliability Levels for Existing Structures

 Background of Target Reliability Levels for Existing Structures
Autor(en): ,
Beitrag für IABSE Workshop: Safety, Failures and Robustness of Large Structures, Helsinki, Finland, 14-15 February 2013, veröffentlicht in , S. 252-259
DOI: 10.2749/222137813807018818
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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...
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Bibliografische Angaben

Autor(en):

Medium: Tagungsbeitrag
Sprache(n): Englisch
Tagung: IABSE Workshop: Safety, Failures and Robustness of Large Structures, Helsinki, Finland, 14-15 February 2013
Veröffentlicht in:
Seite(n): 252-259 Anzahl der Seiten (im PDF): 8
Seite(n): 252-259
Anzahl der Seiten (im PDF): 8
Jahr: 2013
DOI: 10.2749/222137813807018818
Abstrakt:

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.

Stichwörter:
Sicherheitsniveau Bauwerksmonitoring Zuverlässigkeitsindex