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OPTIMAL NETWORK-LEVEL BRIDGE MAINTENANCE PLANNING BASED ON MINIMUM EXPECTED COST.
| 题名： | OPTIMAL NETWORK-LEVEL BRIDGE MAINTENANCE PLANNING BASED ON MINIMUM EXPECTED COST. |
| 作者： | Frangopol-DM; Gharaibeh-ES; Kong-JS; Miyake-M |
| 关键词： | Bridge-management-systems; Highway-bridges; Life-cycle-costing; Maintenance-management; Optimization-; Resource-allocation; Structural-reliability |
| 摘要： | The goal of bridge management is to determine and implement the best possible strategy that ensures an adequate level of safety at the lowest possible life-cycle cost. Although this is generally recognized, the integration of life-cycle cost analysis with bridge reliability analysis has been very limited. Moreover, this has been formulated and illustrated only for individual bridges. A framework for optimal network-level bridge maintenance planning based on minimum expected cost is presented. The goal is the minimization of the expected maintenance cost of a bridge stock with maintenance of the lifetime reliability of each bridge above an acceptable (target) level. The approach is illustrated for a stock of realistic highway bridges. Individual bridges in this stock have different ages, and their reliabilities are time dependent. The framework offers a rational basis for optimizing the resource allocation for management of a stock of gradually deteriorating bridges based on balancing life-cycle maintenance cost and lifetime reliability. This has important practical implications in the development of the optimal management strategy for the bridge stock. |
| 总页数： | Conference Title: Fifth International Bridge Engineering conference. Location: Tampa, Florida. Sponsored by: Transportation Research Board |
| 报告类型： | 科技报告 |
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