Life Cycle Cost and Life Cycle Assessment of Composite Bridge with Flat and Corrugated Webs
Artikel i vetenskaplig tidskrift, 2023

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.

Road bridges

Stainless steel

Corrugated web

Investment cost

LCC

LCA

Duplex

Optimization

genetic algorithm

Composite bridges

Författare

Fatima Hlal

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Mozhdeh Amani

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Peter Nilsson

WSP Sverige

Alexander Hollberg

Chalmers, Arkitektur och samhällsbyggnadsteknik, Byggnadsteknologi

Mohammad al-Emrani

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

ce/papers

Vol. 6 574-579

Ämneskategorier

Samhällsbyggnadsteknik

DOI

10.1002/cepa.2514

Mer information

Senast uppdaterat

2023-10-02