Abstract
Optimum design safety levels for rock and cube armoured rubble mound breakwaters without superstructure are investigated by numerical simulations on the basis of minimization of the total costs over the service life of the structure, taking into account typical uncertainties related to wave statistics and structure response. The study comprises the influence of interest rate, service lifetime, downtime costs and damage accumulation. Design limit states and safety classes for breakwaters are discussed. The results indicate that optimum safety levels are somewhat higher than the safety levels inherent in conventional deterministic designs. Moreover, the analyses show that conservative designs involving very little repair over service lifetime are only marginally more expensive that cost optimised designs.
Originalsprog | Engelsk |
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Titel | Coastlines, Structures and Breakwaters 2005 : Proceedings of the International Conference on Coastlines, Structures and Breakwaters, 2005, Organised on Behalf of the Maritime Board of the Institution of Civil Engineers and Held in London, UK, on 20-22 April 2005 |
Antal sider | 13 |
Forlag | Thomas Telford |
Publikationsdato | 2005 |
ISBN (Trykt) | 0727734555, 9780727734556 |
Status | Udgivet - 2005 |
Begivenhed | Coastline Structures and Breakwaters - London, Storbritannien Varighed: 20 apr. 2005 → 22 apr. 2005 |
Konference
Konference | Coastline Structures and Breakwaters |
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Land/Område | Storbritannien |
By | London |
Periode | 20/04/2005 → 22/04/2005 |
Emneord
- Breakwaters
- Optimum Design
- Optimum Reliability Level
- Cost-Benefit Analysis
- Stochastic Model