基于序贯决策的桥梁多阶段维修加固策略优化方法

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中图分类号：TU311 文献标志码：A 文章编号：1000-582X（2026）01-060-10

doi：10.11835/j.issn.1000-582X.2026.01.006

引用格式：，，，等.基于序贯决策的桥梁多阶段维修加固策略优化方法[J].学报，2026，49（1）：60-69.

Abstract： To address the limitation of existing bridge maintenance optimization methods that fail to consider interactions between sequentialdecisions across the entire service life，this study proposes a multi-stage，two-level optimization framework grounded in sequential decision-making principles.The upper level model determines performance improvement goals for the maintenance sequence，while considering the influence of preceding decisions on subsequent maintenance policies.The lower-level model then identifies the optimal maintenance actions for each component at each stage，subject to the upper-level constraints.Case analysis shows that，while maintaining superior structural condition over the full life cycle，the proposed method reduces cumulative maintenance cost by 28.6% compared with the traditional strategies. Moreover， when the average deterioration rate of the performancecondition index is below l.425 per year， total life-cycle maintenance and rehabilitation cost can be further reduced by reducing the number of decision-making stages.

Keywords： bridge; maintenance; sequential decision-making; two-level decision-making; dynamic programming

截至2023年末，我国共建成各类桥梁120万座，无论数量还是规模均居世界第一。（剩余12747字）