Stainless-Steel in Hisings-Bridge as an Alternative for Carbon Steel - Buckling Capacity and LCCA of Trapezoidal Box Girders Made of Stainless-Steel
Typ
Examensarbete för masterexamen
Program
Publicerad
2021
Författare
Alshihabi, Mohammad
Madentzoglou, Nikolaos
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
In addition to its comparatively low price, conventional carbon steel provides the
bridge industry with several advantages such as high strength, lightweight, and recy clability, making it a preferable material in bridge engineering. On the other hand,
carbon steel is highly susceptible to corrosion, which requires higher maintenance
costs during its life cycle.
Recently, the usage of stainless steel in the bridge industry became an issue for re search, its higher corrosion resistance reduces maintenance costs during the bridge
life cycle. On the contrary, investment costs increase remarkably due to the expen sive alloying components used in stainless steel.
Therefore, the bridge department at COWI wanted to investigate the efficiency of us ing Stainless steel in Hisings-bridge using life cycle cost analysis. Buckling capacities
using duplex stainless-steel grade 1.4662 are calculated for the original cross-section
and an optimized cross-section. The results are compared afterward using life cycle
cost analysis. The investigation shows that saving in the material can be achieved
using higher-strength stainless steel with an optimized cross-section. Life cycle cost
analysis shows that profitability depends on stainless steel prices and the post-weld
treatment cost.
Beskrivning
Ämne/nyckelord
Composite bridges, Trapezoidal open box girders, Hisings-bridge, LCCA study, Duplex stainless steel, Buckling capacity