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The importance of the assessment of old steel bridges has increased over the last years in Germany, because not all of these bridges can be replaced within a short time. This paper gives some experiences that have been gained regarding typical aspects of modelling of old bridge structures. Moreover, general methods are explained on how to calculate the remaining fatigue life of steel road bridges and the new normative algorithm to calculate the remaining fatigue life of steel railway bridges operated by the Deutsche Bahn AG (German Railway Company). This is based on th S-N curves concept. If the obtained remaining fatigue life based on this method is not sufficient, the new service interval assessment method based on fracture mechanics enables a longer secure service life of the railway bridges. The assessment of two road (Strelasund Bridge, Blaues Wunder Dresden), and two railway bridges (High Railway Bridge Rendsburg, Elbe Bridge Meissen) is included to explain some typical problems associated with old steel bridges. (VDEh)
The importance of the assessment of old steel bridges has increased over the last years in Germany, because not all of these bridges can be replaced within a short time. This paper gives some experiences that have been gained regarding typical aspects of modelling of old bridge structures. Moreover, general methods are explained on how to calculate the remaining fatigue life of steel road bridges and the new normative algorithm to calculate the remaining fatigue life of steel railway bridges operated by the Deutsche Bahn AG (German Railway Company). This is based on th S-N curves concept. If the obtained remaining fatigue life based on this method is not sufficient, the new service interval assessment method based on fracture mechanics enables a longer secure service life of the railway bridges. The assessment of two road (Strelasund Bridge, Blaues Wunder Dresden), and two railway bridges (High Railway Bridge Rendsburg, Elbe Bridge Meissen) is included to explain some typical problems associated with old steel bridges. (VDEh)
Assessment of old steel bridges, Germany
Beurteilung von alten Stahlbrücken in Deutschland
Geissler, K. (author)
Structural Engineering International ; 12 ; 258-263
2002
6 Seiten, 14 Bilder, 1 Tabelle, 4 Quellen
Article (Journal)
English
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