6533b855fe1ef96bd12b14c8
RESEARCH PRODUCT
Effects of corrosion on a steel bowstring bridge in marine environment: A case-study of assessment and retrofit
Michele Fabio Granatasubject
Engineeringbusiness.industryBowstring020101 civil engineering02 engineering and technologyBuilding and Construction021001 nanoscience & nanotechnologyBridge (interpersonal)0201 civil engineeringCorrosionTruss bridgeForensic engineeringArch tie bowstring bridge corrosion steel bridge hangersRetrofitting0210 nano-technologybusinessdescription
The case-study of a steel bowstring bridge set in a marine environment and highly damaged by corrosion is presented. The bridge was built in 2004 and was repainted for corrosion protection in 2010. Despite the recent construction and the maintenance interventions, many structural elements like hangers are highly damaged by corrosion with decreasing performance in terms of serviceability and ultimate limit states. A deep investigation was carried out in order to assess the bridge and to establish the necessary retrofit actions to be carried out in the near future. In-situ tests reveal the reduced performance of the original steel in terms of strength and corrosion protection, together with the inefficiency of the successive maintenance interventions. The paper presents assessment of the bridge and retrofit measures, including replacement of the hangers and galvanization through thermal spray coating technology, in order to increase its service life. The results of the investigations and the intervention measures are outlined and discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-03-29 | Bridge Structures |