The science and analytical tools to design long life, low noise railway track systems

用于设计长寿命、低噪音铁路轨道系统的科学和分析工具

• 批准号: EP/M025276/1
• 负责人: William Powrie
• 金额: $ 661.74万
• 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: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FM025276%2F1
• 关键词: science; analytical; tools; design; long

Electrified railways are the only form of powered transport realistically offering zero CO2 emissions at point of use. A reduction in CO2 emissions from transport will require a massive shift from road to rail, itself a challenge as even a 10% shift in the UK would double rail traffic. This is on top of a doubling in rail travel and increased intensity of use of the network since 1994, exposing the limitations of traditional track forms as real time maintenance needs increased and the time available for maintenance reduced. The rail industry is also under pressure to reduce costs and environmental impacts including noise and vibration, often a major cause of objections to proposed new and upgraded lines.The contribution of rail transport to social wellbeing, regeneration and growth is well established; and rail is now seen as the key to unlocking prosperity, improving east-west connectivity in the UK and reducing the north-south economic divide. Planned UK and international rail investment is unprecedented in a century, but increased demands and expectations have revealed gaps in the knowledge needed for effective, rational investment. Scope for cost savings and improved environmental performance through better track system design and longevity is substantial: Network Rail currently spends £3.5bn p.a. on infrastructure maintenance and renewal, and will invest £38bn in 2014-9. TRACK to the FUTURE (T2F) will discover the scientific knowledge and develop the analytical tools to design long-life, low-noise railway track systems that are economical to install, require minimal maintenance, and optimize environmental performance. It will deliver step-change improvements in three key areas:1.Track life: track maintenance is costly in cash and carbon terms, and interferes with operations. T2F will explore new, low-maintenance track forms. It will develop an understanding of the relationships between track stiffness and settlement, which can be measured, and differential movement of the track, which causes performance to deteriorate. It will extend ballast life by understanding and eliminating or mitigating causes of deterioration and developing designs that will continue to perform well long after deterioration has set in; and will facilitate ballast re-use rather than downcycling or disposal.2.Switches (points) and transitions: where trains change direction and cross tracks or other infrastructure there is a complex interaction of geometry, support, wheel profile and vehicle dynamics. This is not sufficiently understood and frequent costly and disruptive maintenance is required. T2F will draw together the key areas of ground support, switch or transition zone geometry, and vehicle dynamics for the reliable assessment of crossing and transition zone behaviour, life and maintenance needs.3.Noise and vibration: public tolerance of vibration and noise from railways is decreasing as use intensifies, yet these are traditionally regarded as secondary in design. T2F will develop and demonstrate, through modelling and full-scale testing, a low-noise, low-vibration track consistent with reduced whole life costs and low maintenance.In every aspect, T2F will address the effects of millions of cycles of complex loads to which track systems are subjected in a modern environment, taking into account the combined effects of noise, vibration, vehicle dynamics and ground behaviour, non-uniformities of loading and non-linearities in response. The research will lead to the development of integrated tools, based on sound fundamental principles and reliable observations of behaviour, for assessing performance of track systems including transitions and crossings, noise and vibration. These will be incorporated into existing industry analytical models to improve the performance and reduce maintenance needs of railway track systems, in support of the DfT Rail Technical Strategy 2040 vision of infrastructure fit for the 21st century.

电动铁路是唯一的电力运输形式，实际上在使用点实际提供了零CO2排放。运输的二氧化碳排放减少将需要从道路转向铁路，这本身就是一个挑战，因为即使在英国的10％转变也可以双向铁路交通。自1994年以来，这是铁路旅行的两倍和网络使用强度的增加，随着实时维护需求增加以及可减少维护的时间，传统轨道形式的局限性。铁路行业还承受着降低成本和环境影响（包括噪声和振动）的压力，通常是对拟议新的和升级线路的物体的主要原因。现在，铁路被视为释放繁荣的关键，改善了英国的东西方连通性并减少了南北的经济鸿沟。计划中的英国和国际铁路投资在一个世纪以前是前所未有的，但需求和期望的增加揭示了有效，理性投资所需的知识差距。节省成本的范围和通过更好的轨道系统设计和寿命改善的环境绩效是很大的：网络铁路目前的支出为35亿英镑。关于基础设施维护和更新，并将在2014年9月投资380亿英镑。未来的轨道（T2F）将发现科学知识，并开发分析工具，以设计长寿，低噪声铁路轨道系统，这些轨道系统可以经济，需要安装，需要最小的维护和最小的维护和优化环境绩效。它将在三个关键领域提供逐步改进：1。轨道寿命：轨道维护的现金和碳条件为昂贵，并干扰了操作。 T2F将探索新的低维护轨道表格。它将对轨道刚度和设置之间的关系有一种理解，这将通过理解和消除或减轻确定和开发设计的原因来延长镇流器的寿命，这些设计将在确定启动后继续持续很长时间；并有助于镇流器的重复使用而不是降低或处置。2。旋转（点）和过渡：火车改变方向，跨越轨道或其他基础设施，几何形状，支撑，车轮轮廓和车辆动力学存在复杂的相互作用。这还不够充分理解，并且经常昂贵，需要破坏性维护。 T2F将汇总地面支撑，开关或过渡区几何形状的关键领域，以及用于对穿越和过渡区行为，寿命和维护需求的可靠评估的车辆动力学。3.Noiseand Evillation：Noise and Evibration：对铁路的振动和噪声的宽容和噪音的使用量减少，但传统上被认为是设计中的二级。 T2F将通过建模和全尺度测试来发展和证明，低噪声，低振动轨道与降低的整个生命成本和低维护相一致。在各个方面，T2F将解决数百万个复杂载荷周期的影响，在现代环境中，在现代环境中遇到了噪音，振动和不分开的行为和不分散的行为，并不是在现代环境中遇到的效果，而不分开的行为和分散的行为，并且是分散的行为，并且是分散的行为。这项研究将基于合理的基本原理和可靠的行为观察，以评估轨道系统的性能，包括过渡和交叉，噪声和振动，从而导致综合工具的开发。这些将纳入现有的行业分析模型中，以提高绩效并减少铁路轨道系统的维护需求，以支持DFT铁路技术策略2040基础设施愿景适合21世纪。

项目成果

Advances in Transportation Geotechnics IV - Proceedings of the 4th International Conference on Transportation Geotechnics Volume 2

交通岩土工程进展 IV - 第四届交通岩土工程国际会议论文集第 2 卷

• DOI: 10.1007/978-3-030-77234-5_78
• 发表时间: 2022
• 作者: Woodward P

A review and evaluation of ballast settlement models using results from the Southampton Railway Testing Facility (SRTF)

• DOI: 10.1016/j.proeng.2016.06.089
• 发表时间: 2016
• 期刊: Procedia Engineering
• 作者: T. Abadi;L. Pen;A. Zervos;W. Powrie

Scaling relationships for strip fibre-reinforced aggregates

• DOI: 10.1139/cgj-2016-0346
• 发表时间: 2017-05-01
• 期刊: CANADIAN GEOTECHNICAL JOURNAL
• 影响因子: 3.6
• 作者: Ajayi, Olufemi;Le Pen, Louis;Powrie, William
• 通讯作者: Powrie, William

Benefits from the remote monitoring of railway assets

铁路资产远程监控的好处

• DOI: 10.1680/jtran.16.00155
• 发表时间: 2019
• 期刊: Proceedings of the Institution of Civil Engineers - Transport
• 作者: Armstrong J

Improving the performance of railway tracks through ballast interventions

• DOI: 10.1177/0954409716671545
• 发表时间: 2018-02
• 期刊: Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit
• 作者: T. Abadi;L. Pen;A. Zervos;W. Powrie