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首页> 外文期刊>Transportation Research Part B: Methodological >Optimal threshold-based network-level transportation infrastructure life-cycle management with heterogeneous maintenance actions
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Optimal threshold-based network-level transportation infrastructure life-cycle management with heterogeneous maintenance actions

机译：具有异构维护措施的基于阈值的最佳网络级运输基础设施生命周期管理

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摘要

Transportation infrastructure life-cycle management deals with maintenance decision making of transportation facilities such as pavement, bridges, and railways under budget constraints. In practice, transportation agencies adopt threshold-based rules for maintenance planning because they are intuitive and easy to implement. However, the thresholds are often determined based on engineering judgment without any systematic approach. Therefore, maintenance budgets cannot be used effectively and facility conditions are not optimized. This research uses hybrid dynamic models to represent threshold-based maintenance for transportation infrastructure in a realistic manner. Hybrid dynamic models combine continuous states such as pavement roughness and age with discrete states such as maintenance history. These models are also capable of considering multiple maintenance actions with heterogeneous effects. Based on facility conditions and maintenance thresholds, corresponding maintenance actions are selected automatically and the facility switches between deterioration modes to reflect the effects of the chosen action. Furthermore, to consider users' reactions to maintenance actions and accurately predict deterioration for a network of facilities, threshold-based maintenance is formulated as an upper-level problem, and user response is incorporated as a lower-level problem. This leads to a bi-level programming problem where maintenance thresholds are decision variables, which is solved with a modified tabu search algorithm. The proposed methodology is validated with the road network of an urban area and the generated maintenance thresholds are reasonable and robust, which shows that the methodology has great potential to support transportation infrastructure life-cycle management in practice.
机译：运输基础设施的生命周期管理处理预算约束下的运输设施（如人行道，桥梁和铁路）的维护决策。实际上，运输代理商采用基于阈值的规则进行维护计划，因为它们直观且易于实施。但是，阈值通常是根据工程判断确定的，没有任何系统的方法。因此，维护预算无法得到有效利用，设施条件也无法得到优化。这项研究使用混合动力模型以现实的方式表示基于阈值的运输基础设施维护。混合动力模型将连续状态（例如路面粗糙度和老化）与离散状态（例如维护历史记录）结合在一起。这些模型还能够考虑具有不同影响的多种维护措施。根据设施状况和维护阈值，将自动选择相应的维护措施，并且设施会在恶化模式之间切换以反映所选措施的效果。此外，为了考虑用户对维护行动的反应并准确预测设施网络的恶化，将基于阈值的维护公式化为上层问题，而将用户响应纳入下层问题。这导致了一个双层编程问题，其中维护阈值是决策变量，可以使用改进的禁忌搜索算法解决。所提出的方法在城市道路网络中得到了验证，所产生的维护阈值是合理且健壮的，这表明该方法在实践中具有巨大的潜力来支持交通基础设施生命周期的管理。

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