• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environments >Life Cycle Cost Evaluation of Noise and Vibration Control Methods at Urban Railway Turnouts
【24h】

Life Cycle Cost Evaluation of Noise and Vibration Control Methods at Urban Railway Turnouts

机译：城市铁路道岔噪声与振动控制方法的生命周期成本评估

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A focus of the railway industry over the past decades has been to research, find and develop methods to mitigate noise and vibration resulting from wheel/rail contact along track infrastructure. This resulted in a wide range of abatement measures that are available for today’s engineers. The suitability of each method must be analysed through budget and timeframe limitations, which includes building, maintenance and inspection costs and time allocation, while also aiming at delivering other benefits, such as environmental impact and durability of infrastructure. There are several situations that need noise and vibration mitigation methods, but each design allocates different priorities on a case-by-case basis. Traditionally, the disturbance caused by railways to the community are generated by wheel/rail contact sound radiation that is expressed in different ways, depending on the movement of the rolling stock and track alignment, such as rolling noise, impact noise and curve noise. More specifically, in special trackworks such as turnouts (or called “switches and crossings”), there are two types of noise that can often be observed: impact noise and screeching noise. With respect to the screeching (or flanging), its mitigation methods are usually associated with curve lubrications. In contrast, the impact noise emerges from the sound made by the rolling stock moving through joints and discontinuities (i.e., gaps), resulting in various noise abatement features to minimise such noise impact. Life cycle analysis is therefore vital for cost efficiency benchmarking of the mitigation methods. The evaluation is based on available data from open literature and the total costs were estimated from valid industry reports to maintain coherency. A 50-year period for a life cycle analysis is chosen for this study. As for the general parameters, an area with a high density of people is considered to estimate the values for a community with very strict limits for noise and vibration.
机译：在过去的几十年中，铁路行业的重点是研究，发现和开发减轻沿轨道基础设施的轮轨接触所产生的噪声和振动的方法。这导致了当今工程师可以采用的各种减排措施。必须通过预算和时间表限制来分析每种方法的适用性，其中包括建筑，维护和检查成本以及时间分配，同时还旨在带来其他好处，例如对环境的影响和基础设施的耐用性。有几种情况需要使用噪声和振动缓解方法，但是每种设计都会根据具体情况分配不同的优先级。传统上，铁路对社区的干扰是由轮/轨接触声辐射产生的，轮辐接触声辐射以不同的方式表示，具体取决于机车车辆的运动和轨道对齐方式，例如滚动噪声，冲击噪声和弯道噪声。更具体地说，在特殊的轨道工程中，例如道岔（或称为“交叉路口”），通常可以观察到两种类型的噪声：撞击噪声和尖叫声。关于尖叫声（或翻边），其缓解方法通常与曲线润滑相关。相反，冲击噪声是从机车车辆通过接头和不连续部分（即间隙）发出的声音中产生的，从而产生了各种噪声消除特征，以最大程度地减小这种噪声影响。因此，生命周期分析对于缓解方法的成本效率基准测试至关重要。评估基于公开文献中的可用数据，总成本是根据有效的行业报告估算得出的，以保持一致性。本研究选择生命周期分析的50年期限。至于一般参数，考虑到人口密度高的区域，以估计对噪声和振动有严格限制的社区的价值。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号