Open this publication in new window or tab >> (English)In: International Journal of Steel Structures, ISSN 1598-2351, E-ISSN 2093-6311Article in journal (Refereed) Submitted
Abstract [en]
The use of high strength steel has the potential to reduce the amount of steel used in bridges and thereby, facilitate a more sustainable construction. In this study, an optimization of a composite steel and concrete bridge is presented. The study aimed at identifying the potential benets of using high strength steel, compared to conventional steel, in terms of weight, material cost and environmental impact. The optimization routine followed what is outlined in the Eurocode and satised both ultimate and serviceability limit state conditions, with exception of fatigue. To study the inuence of fatigue a separate verication was performed on the solutions found from the optimization. The study showed that substantial savings in weight, environmental impact and material cost could be made by implementing high strength steel. However, when the fatigue verication according to Eurocode was considered, the potential benets of using steels of higher grade vanished completely.
Keywords
High strength steel, Composite steel and concrete bridge, Optimization, Hybrid girder, Fatigue
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:kth:diva-259933 (URN)
Note
QC 20191112
2019-09-242019-09-242023-10-19Bibliographically approved