Life cycle environmental impact of two commonly used short span bridges in Sweden
(English)Manuscript (preprint) (Other academic)
In a bridge project, several alternative designs can be functionally equivalent for the designated location. The environmental concern urges today’s designers to explore the new design options to mitigate the associated environmental burdens. When comparing to the concrete slab frame bridges, the soil-steel flexible culverts show advantages in ease erection, low maintenance as well as the competitive cost. However, its environmental performance has never been studied. This paper compared the environmental performance of these two bridge types through the whole life cycle from cradle to grave, based on 8 real cases in Sweden. Unlike the previous studies that only looked at few indicators, this paper comprehensively covered eleven sets of mid-point indicators, cumulative energy demand (CED) as well as the associated cost. The construction phase is a specific focus in this paper. The results indicate that the environmental performance of a bridge is linked closely with the bridge type selection, as well as governed by multiple indicators in the environmental domain.
IdentifiersURN: urn:nbn:se:kth:diva-159583OAI: oai:DiVA.org:kth-159583DiVA: diva2:786075
Sustainable construction; Life cycle assessment; LCA; LCA for bridges; Global warming; Bridge; Carbon footprint; CO2 emissions.
QC 201606082015-02-042015-02-042016-06-08Bibliographically approved