Railway Track for the 21st Century

21世纪的铁路轨道

• 批准号: EP/H044949/1
• 负责人: William Powrie
• 金额: $ 400.02万
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2010
• 资助国家: 英国
• 起止时间: 2010 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FH044949%2F1
• 关键词: Railway; Track; 21st; Century

The majority of the world's railways - including all main lines in the UK - are currently on ballasted track. Although there have been developments in component specifications and materials, the principles of the system have changed little over the past 150 years. Ballasted track has generally been considered to offer the optimum solution in terms of construction cost, stiffness and drainage properties, and ease of modification: thus although more highly engineered track forms have been used (e.g. in Japan, Germany and China), ballasted track has been employed both for upgrades such as the UK West Coast Main Line and for new high speed lines including HS1 (UK), TGV (France) and AVE (Spain). However, the limitations of ballasted track as currently constructed are becoming more apparent and more significant as the demands placed upon it have increased. This has led to higher than expected maintenance requirements and costs, and demonstrates that a transformation in track performance - by retro-fit measures for existing ballasted track, or by an informed decision in favour of an alternative track system in the case of large-scale renewals - is essential if the Government's aspirations of reduced cost and increased capacity for rail transport are to be realised. This Programme Grant will bring about a step-change improvement in the engineering, economic and environmental performance of railway track making it fit for a 21st century railway, by developing new techniques for its design, construction and maintenance. By obtaining a better understanding of the behaviour of track components, the interactions between them and their response to external loading and environmental conditions, the performance of railway track can be significantly enhanced. Improved understanding will allow the development of more effective and efficient maintenance and renewal strategies, leading in turn to reduced costs, increased capacity and improved reliability. The Programme Grant will also enable a radical overhaul of current railway track design appropriate for both new build (e.g. HS2) and upgrades to meet current and future train loading requirements more efficiently than is at present possible. Meeting these challenges will require a coordinated programme of research to investigate how the various components of the track system relate to each other and to external factors. This will involve a series of inter-related experiments together with supporting mathematical and numerical modelling, field monitoring and observation. The outputs of these studies will feed into economic modelling work, leading to the production of a decision-support tool, for use by industry, to appraise the cost implications of using different track technologies in combination with specific external factors. The aims of this Programme Grant can only be achieved by combining a variety of skills and techniques. The research team therefore comprises world-leading engineers and scientists from different disciplines and universities, working together to apply their collective expertise. A well-defined organisational structure and adaptable methods of operation will together provide a high level of integration and synergy between the various research areas and activities; excellent communications between the researchers, institutions and industry partners; flexibility in the allocation and use of resources; agility and responsiveness in research direction; proactive management of risk; and ownership and early uptake of research results by industry.

世界上大多数铁路——包括英国的所有干线——目前都在有碴轨道上。尽管组件规格和材料有所发展，但系统原理在过去 150 年中几乎没有变化。有碴轨道通常被认为在施工成本、刚度和排水性能以及易于修改方面提供了最佳解决方案：因此，尽管已经使用了更高度工程化的轨道形式（例如在日本、德国和中国），但有碴轨道已用于英国西海岸干线等升级改造以及包括 HS1（英国）、TGV（法国）和 AVE（西班牙）在内的新高速线路。然而，随着对有碴轨道的要求的增加，目前建造的有碴轨道的局限性变得越来越明显和显着。这导致了高于预期的维护要求和成本，并表明轨道性能的转变 - 通过对现有有碴轨道进行改造措施，或在大规模情况下做出有利于替代轨道系统的明智决定如果要实现政府降低铁路运输成本和增加铁路运输能力的愿望，更新是至关重要的。该计划拨款将通过开发设计、施工和维护的新技术，在铁路轨道的工程、经济和环境绩效方面带来显着改善，使其适应 21 世纪的铁路。通过更好地了解轨道部件的行为、它们之间的相互作用以及它们对外部载荷和环境条件的响应，可以显着提高铁路轨道的性能。加深理解将有助于制定更有效和高效的维护和更新策略，从而降低成本、增加容量和提高可靠性。该计划拨款还将对适用于新建（例如 HS2）和升级的当前铁路轨道设计进行彻底改革，以比目前更有效地满足当前和未来的列车装载要求。应对这些挑战需要协调一致的研究计划，以调查轨道系统的各个组成部分之间以及与外部因素之间的关系。这将涉及一系列相互关联的实验以及支持数学和数值建模、现场监测和观察。这些研究的成果将纳入经济建模工作，从而产生供行业使用的决策支持工具，以评估结合特定外部因素使用不同轨道技术的成本影响。该计划补助金的目标只能通过结合各种技能和技术来实现。因此，研究团队由来自不同学科和大学的世界领先的工程师和科学家组成，共同努力应用他们的集体专业知识。明确的组织结构和适应性强的运作方法将共同提供各个研究领域和活动之间的高水平整合和协同作用；研究人员、机构和行业合作伙伴之间的良好沟通；资源分配和使用的灵活性；研究方向的敏捷性和反应能力；主动管理风险；行业对研究成果的所有权和早期采用。

项目成果

Numerical modelling of railway ballast at the particle scale

颗粒尺度铁路道碴的数值模拟

• DOI: http://dx.10.1002/nag.2424
• 发表时间: 2015
• 期刊: International Journal for Numerical and Analytical Methods in Geomechanics
• 影响因子: 4
• 作者: Ahmed S

Measuring the Area and Number of Ballast Particle Contacts at Sleeper-Ballast and Ballast-Subgrade Interfaces

测量轨枕-道碴和道碴-路基界面处道碴颗粒接触的面积和数量

• DOI: http://dx.10.4203/ijrt.4.2.3
• 发表时间: 2015
• 期刊: International Journal of Railway Technology
• 作者: Abadi T

Scaling relationships for strip fibre-reinforced aggregates

带状纤维增强骨料的比例关系

• DOI: http://dx.10.1139/cgj-2016-0346
• 发表时间: 2017
• 期刊: Canadian Geotechnical Journal
• 影响因子: 3.6
• 作者: Ajayi O

Effect of Sleeper Interventions on Railway Track Performance

轨枕干预对铁路轨道性能的影响

• DOI: 10.1061/(asce)gt.1943-5606.0002022
• 发表时间: 2019-04-01
• 期刊: Journal of Geotechnical and Geoenvironmental Engineering
• 影响因子: 3.9
• 作者: T. Abadi;L. Pen;A. Zervos;W. Powrie
• 通讯作者: W. Powrie

Modelling the effects of trafficking and tamping on scaled railway ballast in triaxial tests

在三轴试验中模拟运输和捣固对按比例铁路道碴的影响

• DOI: http://dx.10.1016/j.trgeo.2018.04.004
• 发表时间: 2018
• 期刊: Transportation Geotechnics
• 影响因子: 5.3
• 作者: Aingaran S