Heat-Related Failures on Southeast England's Railway Network: Insights and Implications for Heat Risk Management
Heat-Related Failures on Southeast England's Railway Network: Insights and Implications for Heat Risk Management
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DOI：
10.1175/wcas-d-15-0068.1
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发表时间：
2016-04-01
影响因子：
2.2
通讯作者：
Quinn, Andrew
中科院分区：
文献类型：
--
作者：
Ferranti, Emma;Chapman, Lee;Quinn, Andrew
高温和热浪会给铁路基础设施带来许多问题，例如轨道屈曲、架空线路下垂以及电气设备故障。如果不适应，这些问题将在未来气候变暖时加剧。这项研究利用行业故障数据来研究英格兰东南部与热相关事件的时间和空间分布，并为温度对铁路网的影响提供了独特的证据基础。该分析特别探讨了故障收获的概念，即基础设施系统在夏季（四月至九月）期间对温度的适应能力越来越强，因为最脆弱的资产随着温度的每次增量上升而发生故障。分析支持了这一假设，并清楚地表明，尽管气温相当高，但在初夏/仲夏季节，与高温相关的事件发生数量较多，随后显着减少。这种故障收获以及随之而来的铁路基础设施系统在夏季期间弹性的增强，可以为铁路网络的热风险管理提供创新和动态的新方法。这里探讨了减少中断和延误并改善服务的新方法。
High temperatures and heat waves can cause numerous problems for railway infrastructure, such as track buckling, sagging of overhead lines, and the failure of electrical equipment. Without adaptation, these problems are set to increase in a future warmer climate. This study used industry fault data to examine the temporal and spatial distribution of heat-related incidents in southeast England and produce a unique evidence base of the impact of temperature on the rail network. In particular, the analysis explored the concept of failure harvesting, whereby the infrastructure system becomes increasingly resilient to temperature over the course of the summer season (April-September) as the most vulnerable assets fail with each incremental rise in temperature. The analysis supports the hypothesis and clearly shows that a greater number of heat-related incidents occur in the early/midsummer season before reducing significantly, despite equivalently high temperatures. This failure harvesting and the consequential increased resilience of the railway infrastructure system over the course of the summer season could permit an innovative and dynamic new approach to heat risk management on the railway network. New approaches that would reduce the disruption and delays and improve service are explored here.