| Article ID: | iaor2017181 |
| Volume: | 32 |
| Issue: | 3 |
| Start Page Number: | 213 |
| End Page Number: | 226 |
| Publication Date: | Mar 2017 |
| Journal: | Computer-Aided Civil and Infrastructure Engineering |
| Authors: | Coutinho-Rodrigues Joo, Alada-Almeida Lus, Sousa Nuno |
| Keywords: | construction & architecture, simulation, decision, combinatorial optimization |
A bi‐objective decision aid model for planning long‐term maintenance of infrastructure systems is presented, oriented to interventions on their constituent elements, with two upgrade levels possible for each element (partial/full repairs). The model aims at maximizing benefits and minimizing costs, and its novelty is taking into consideration, and combining, the system/element structure, volume discounts, and socioeconomic factors. The model is tested with field data from 229 sidewalks (systems) and compared to two simpler repair policies, of allowing only partial or full repairs. Results show that the efficiency gains are greater in the lower mid‐range budget region. The proposed modeling approach is an innovative tool to optimize cost/benefits for the various repair options and analyze the respective trade‐offs.