Location
Cork Institute of Technology, Cork, Ireland
Event Website
https://event.ceri2020.exordo.com/
Start Date
28-8-2020 10:30 AM
End Date
28-8-2020 11:45 AM
Description
Steel piles employed in a marine environment will deteriorate over their lifetime owing to corrosive effects of the sea. The focus of this research are the causes, effects, and magnitude of the corrosion of steel piles, supporting an on shore jetty. The governing codes of practice in Ireland for designing steel piles are: (i) European Standard I.S. EN 1993-5 – Eurocode 3: Design of steel structures - Part 5: Piling, and (ii) I.S. EN 1993-1-1 – Eurocode 3: Design of steel structures - Part 1-1: General rules and rules for buildings. These codes are discussed, including all aspects of the design method. The prediction of section loss in steel piles due to corrosion is researched using the probability-based assessment, which is commonly used for assessment of bridge structures. For the probability based method the main factors which influence corrosion, temperature and dissolved inorganic nitrogen, are used to calculate a mean and standard deviation of corrosion in the low water zone for each year of the lifetime of the steel pile. The future increase in sea water temperature due to climate change is considered within the predicted section loss. The change in behaviour of the steel pile as its cross section deteriorates over the design life is reviewed. It is concluded that using the probabilistic method to calculate section loss due to corrosion after 75 years results in a higher section loss (10 mm) than that used in the Eurocode Guidance (5.6 mm). This method also gives an engineer more power to consider the most critical factors affecting corrosion, which vary from site to site. The results of this research are beneficial to both engineers and asset owners in carrying out life cycle costing of similar structures.
Recommended Citation
Galvin, Rebecca; Hanley, Ciaran; Ruane, Kieran; Murphy, John J.; and Jaksic, Vesna, "Environmental Impact on Corrosion Rates of Steel Piles Employed in Marine Environment" (2020). Civil Engineering Research in Ireland 2020. 1.
https://sword.cit.ie/ceri/2020/10/1
Included in
Civil Engineering Commons, Construction Engineering and Management Commons, Environmental Engineering Commons, Geotechnical Engineering Commons, Hydraulic Engineering Commons, Structural Engineering Commons, Transportation Engineering Commons
Environmental Impact on Corrosion Rates of Steel Piles Employed in Marine Environment
Cork Institute of Technology, Cork, Ireland
Steel piles employed in a marine environment will deteriorate over their lifetime owing to corrosive effects of the sea. The focus of this research are the causes, effects, and magnitude of the corrosion of steel piles, supporting an on shore jetty. The governing codes of practice in Ireland for designing steel piles are: (i) European Standard I.S. EN 1993-5 – Eurocode 3: Design of steel structures - Part 5: Piling, and (ii) I.S. EN 1993-1-1 – Eurocode 3: Design of steel structures - Part 1-1: General rules and rules for buildings. These codes are discussed, including all aspects of the design method. The prediction of section loss in steel piles due to corrosion is researched using the probability-based assessment, which is commonly used for assessment of bridge structures. For the probability based method the main factors which influence corrosion, temperature and dissolved inorganic nitrogen, are used to calculate a mean and standard deviation of corrosion in the low water zone for each year of the lifetime of the steel pile. The future increase in sea water temperature due to climate change is considered within the predicted section loss. The change in behaviour of the steel pile as its cross section deteriorates over the design life is reviewed. It is concluded that using the probabilistic method to calculate section loss due to corrosion after 75 years results in a higher section loss (10 mm) than that used in the Eurocode Guidance (5.6 mm). This method also gives an engineer more power to consider the most critical factors affecting corrosion, which vary from site to site. The results of this research are beneficial to both engineers and asset owners in carrying out life cycle costing of similar structures.
https://sword.cit.ie/ceri/2020/10/1
