A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Prioritizing Rubble-Mound Breakwater’s Repairs Using a Multicriteria Approach
Maritime works deteriorate continuously and at a certain moment in time are in need of some sort of repair. Usually the decision maker seeks technical advice and has to consider the resources available. A literature review showed great limitations in the tools that are today in use. This paper presents the implementation of a decision support methodology to prioritize repairs in rubble-mound breakwaters using MACBETH. Models for the benefits of repairing breakwaters, which are based on visual inspection data only, were created, and an expert meeting was held—the decision conference—following MACBETH. As outputs, the criteria, the value functions, and the weights to obtain scores were generated. Yet, using the condition indices set for the different levels of analysis of the breakwater, the decision maker will decide whether and how to intervene. The analysis uses MACBETH for calculating the scores and considers the benefits of the interventions in the armor layer for a breakwater divided into reaches. Costs and benefits are used afterward to prioritize the interventions. The common issue of the limited budget available is solved by applying portfolio—set of interventions—creation methods. The Ericeira rubble-mound breakwater (Portugal), which shows some signs of deterioration, was selected as a case study to illustrate the methodology. Interesting enough, the use of this new methodology shows what are the reaches that must be repaired in the very first place, which was not evident when using conventional analysis. The breakwater head gets the largest benefits in being repaired.
Prioritizing Rubble-Mound Breakwater’s Repairs Using a Multicriteria Approach
Maritime works deteriorate continuously and at a certain moment in time are in need of some sort of repair. Usually the decision maker seeks technical advice and has to consider the resources available. A literature review showed great limitations in the tools that are today in use. This paper presents the implementation of a decision support methodology to prioritize repairs in rubble-mound breakwaters using MACBETH. Models for the benefits of repairing breakwaters, which are based on visual inspection data only, were created, and an expert meeting was held—the decision conference—following MACBETH. As outputs, the criteria, the value functions, and the weights to obtain scores were generated. Yet, using the condition indices set for the different levels of analysis of the breakwater, the decision maker will decide whether and how to intervene. The analysis uses MACBETH for calculating the scores and considers the benefits of the interventions in the armor layer for a breakwater divided into reaches. Costs and benefits are used afterward to prioritize the interventions. The common issue of the limited budget available is solved by applying portfolio—set of interventions—creation methods. The Ericeira rubble-mound breakwater (Portugal), which shows some signs of deterioration, was selected as a case study to illustrate the methodology. Interesting enough, the use of this new methodology shows what are the reaches that must be repaired in the very first place, which was not evident when using conventional analysis. The breakwater head gets the largest benefits in being repaired.
Prioritizing Rubble-Mound Breakwater’s Repairs Using a Multicriteria Approach
Marujo, Nuno (author) / Trigo-Teixeira, António (author) / do Valle, António Sanches (author) / Araújo, Maria Amélia (author)
2019-09-26
Article (Journal)
Electronic Resource
Unknown
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