REDUCING MAINTENANCE COSTS FOR BALLASTED TRACK: EVIDENCE FROM BRITAIN
REDUCING MAINTENANCE COSTS FOR BALLASTED TRACK: EVIDENCE FROM BRITAIN
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降低有碴轨道的维护成本：来自英国的证据
DOI：
10.2495/tdi-v1-n3-318-328
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发表时间：
2017
影响因子：
2.7
通讯作者：
J. Preston
中科院分区：
文献类型：
--
作者：
Alejandro Ortega Hortelano;S. Blainey;J. Preston
在过去的二十年里，英国的铁路发展迅速，乘客增加了一倍，火车服务水平提高了50%。然而，这些成功也带来了挑战。具体而言，实际单位成本估计增加了50%，其中基础设施更新和改进成本的增加尤为明显。在这种背景下，南安普顿大学一直在领导由工程和物理科学研究委员会资助的Track 21和Track to the Future项目。这些项目正在评估如何在高交通量的情况下使有碴轨道系统更耐用，以及如何降低维护和更新的成本。轨道21考虑了一些工程干预措施，本文主要关注其中一个，在睡眠垫下（USPs）。这种干预的成本影响是用一个行业特定的模型来评估的，VTISM（车辆轨道互动战略模型），采用两种方式。首先，来自专业测试平台的实验室实验结果被纳入模型。其次，在成本效益分析框架内，还考虑了提高可靠性、改善乘坐质量和减少振动的更广泛影响。研究发现，USPs可以节省大量的资金，并且根据有关噪音影响的假设，可能会带来更广泛的社会效益。
Over the last twenty years, the railways in Britain have seen rapid growth, with patronage doubling and the level of train service increasing by 50%. However, these successes have also led to challenges. In particular real unit costs are estimated to have increased by 50%, with particularly marked increases in infrastructure renewal and enhancement costs. Against this background, the University of Southampton have been leading the Track 21 and Track to the Future projects, funded by the Engineering and Physical Sciences Research Council. These projects are assessing how to make ballasted track systems more durable given higher traffic levels, and how to reduce the costs of maintenance and renewal. Track 21 considered a number of engineering interventions of which this paper focusses on one, Under Sleeper Pads (USPs). The cost implications of this intervention are assessed for the South West Main Line using an industry-specific model, VTISM (Vehicle Track Interaction Strategic Model), adapted in two ways. First, the results of laboratory experiments from specialist test rigs are incorporated into the model. Secondly, the wider effects of increased reliability, improved ride quality and reduced vibration are also considered within a costbenefit analysis framework. It is found that USPs can lead to substantial financial savings and, depending on assumptions concerning noise impacts, are likely to have substantial wider social benefits.