Railway Infrastructure Asset Management: The Whole-System Life Cost Analysis
Railway Infrastructure Asset Management: The Whole-System Life Cost Analysis
复制标题
铁路基础设施资产管理：全系统寿命成本分析
DOI：
10.1049/iet-its.2015.0030
复制
发表时间：
2016
影响因子：
2.7
通讯作者：
J. Andrews
中科院分区：
文献类型：
--
作者：
D. Rama;J. Andrews
在不断减少的预算限制下，提供功能可持续且在安全性和可用性方面不打折扣的铁路基础设施是一项巨大的挑战。成功完成这项任务取决于从更广泛的全系统角度有效管理各项资产。这是一项非常复杂的决策任务，需要数学模型来做出明智的选择。在这项研究中，提出了一种新的建模框架进行整个系统的生命周期成本分析。该框架基于两个模型：铁路网络性能和成本。利用前一种模型，可以对单个资产和整个系统的决策效果进行调查。一个Petri网建模技术被用来构建模型。一种形式的蒙特卡罗模拟，然后使用获得模型的结果。然后将基础设施性能模型与成本模型集成，以执行生命周期成本分析。一个上部结构的例子来说明该方法的应用。结果表明，考虑到干预活动之间的相互依赖性极大地影响，不仅是基础设施的性能，而且其生命周期成本，因此应包括在成本分析。
Delivering the railway infrastructure whose functionality is sustainable and uncompromised in terms of safety and availability under ever decreasing budget constraints is a great challenge. The successful accomplishment of this task relies on the effective management of individual assets within a wider whole system perspective. This is a highly complex decision-making task where mathematical models are required to enable well-informed choices. In this study, a novel modelling framework is proposed for performing the whole system lifecycle cost analysis. The framework is based on two models: railway network performance and costs. Using the former model investigations of the effects of decisions can be carried out for the individual asset and the whole system. A Petri net modelling technique is used to construct the model. A form of Monte Carlo simulation is then used to obtain model results. The infrastructure performance model is then integrated with the cost model to perform the lifecycle cost analysis. A superstructure example is presented to demonstrate the application of the approach. The results show that taking into account interdependencies among the intervention activities greatly influences, not only the performance of the infrastructure, but also its lifecycle costs and thus should be included in the cost analysis.