2016年--外文翻译---铁路基础设施的维修窗口：成本效率与交通影响（节选）

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1、 中文 3200 字， 1850 单词， 1万英文字符 出处： Lidn T, Joborn M. Dimensioning windows for railway infrastructure maintenance: Cost efficiency versus traffic impactJ. Journal of Rail Transport Planning & Management, 2016, 6(1):32-47. Dimensioning windows for railway infrastructure maintenance: Cost efciency versus

2、trafc impact Tomas Liden, Martin Joborn Abstract The Swedish Transport Administration is introducing a new regime, called maintenance windows, for allocating train free slots reserved for maintenance tasks on the railway infrastructure. In this paper, a model for the assessment and the dimensioning

3、of such maintenance windows is presented, which considers marginal effects on both the maintenance cost and the expected train trafc demand. The aim is to establish quantitative measures that can be used for comparing conicting capacity requests from infrastructure maintenance and trafc operations o

4、n railway networks. The model is demonstrated in a cost benet analysis for a real life case study on the Swedish Northern Main Line. Keywords: Maintenance planning Cost benet analysis Railway infrastructure Introduction Railway infrastructure maintenance is of crucial importance in order to obtain a

5、 well functioning transportation system. The actual maintenance work consists of a large amount of different activities, requiring considerable resources and large budgets. The European countries are reported to allocate 15e25 billion V annually on maintenance and renewals for a railway system consi

6、sting of about 300,000 km of track, giving an average of 70,000V per km track and year (see EIM-EFRTC-CER Working Group (2012). There is however an inherent conict in deciding how to assign maintenance work slots and train operation paths since these activities are mutually exclusive. This planning conict becomes crucial on lines with high trafc density and/or around the clock operation - especially when trafc demand and maintenance needs are increasing. This is the case in Swed