Balanced allocation of bridge deck maintenance budget through multi-objective optimization

• Published in: KSCE journal of civil engineering Vol. 21; no. 4; pp. 1039 - 1046
• Main Authors: Shim, Hyung Seop, Lee, Seung Hyun
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Civil Engineers 01.05.2017; Springer Nature B.V; 대한토목학회
• Subjects: Allocations; Annual; Bridge decks; Bridge maintenance; Bridges; Budgeting; Budgets; Civil Engineering; Construction Management; Engineering; Geotechnical Engineering & Applied Earth Sciences; Industrial Pollution Prevention; Mathematical models; Multiple objective analysis; Objective function; Optimization; Optimization techniques; 토목공학; improvement model; Multi-objective optimization; probable unit cost; Bridge Management System (BMS); and bi-objective optimization; bridge deck maintenance
• ISSN: 1226-7988; 1976-3808
• DOI: 10.1007/s12205-016-0591-5

Multi-objective optimization method for the allocation of bridge deck Maintenance, Repair, and Rehabilitation (MR&R) budget is proposed using Bridge Management System (BMS) models. In single-objective optimization method, the objective function is usually either total annual MR&R budget or structurally deficient deck area which must be minimized with given annual budget. These objective functions are minimized with constraints, and the solution methods are well-known for the most cases. In multi-objective optimization, objective functions can be the structurally deficient deck area as well as annual MR&R budget. Since structurally deficient deck area and level of annual deck MR&R budget are closely interrelated, State agencies need the method to balance the investment-deck improvement trade-off. This paper uses multi-objective optimization technique with linearly weighted sum method to find balanced MR&R alternatives for the network of bridge decks. Data obtained from Wyoming Department of Transportation (WYDOT) are used to validate the feasibility of application of multi-objective optimization for the maintenance of bridge decks.