Life Cycle Cost and Life Cycle Assessment of Composite Bridge with Flat and Corrugated Webs

Hlal, Fatima,1989Chalmers tekniska högskola,Chalmers University of Technology (author)

To satisfy the sustainability criteria, a bridge design must be economically viable during its entire service life with a minimal impact on the environment. While stainless steel is known for its excellent life cycle performance, its high cost prevents it from being used in bridges to a larger extent. This study evaluates a new design solution that takes advantage of using corrugated web in bridge girders to overcome this issue. Three design concepts are evaluated for a three-span case-study bridge. These include a bridge with carbon steel flat web, stainless steel flat web, and stainless-steel corrugated web girders. Each design is optimized using a genetic algorithm. The three optimal solutions are then evaluated in terms of investment costs, life cycle costs (LCC) and life cycle impact. The results show that the investment costs in a flat web girder bridge increase by 27% when stainless steel is used instead of C-Mn (carbon) steel. However, this increase is only 10% when corrugated web girders are used. On the other hand, the LCC savings increase from 6% to 18% for corrugated web girders. Finally, the use of corrugated web in stainless steel leads to a reduction in the climate impacts of up to 32% compared to carbon steel for the studied bridge.

Amani, Mozhdeh,1985Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)mozhdeh (author)
Nilsson, Peter,1982WSP Sverige AB(Swepub:cth)penilss (author)
Hollberg, Alexander,1985Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)hollberg (author)
al-Emrani, Mohammad,1967Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)sarasa (author)
Chalmers tekniska högskolaWSP Sverige AB (creator_code:org_t)

By the author/editor: Hlal, Fatima, 19 ...; Amani, Mozhdeh, ...; Nilsson, Peter, ...; Hollberg, Alexan ...; al-Emrani, Moham ...

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