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首页> 外文期刊>International Journal of Sustainable Materials and Structural Systems >Modern methods of railway track safety inspection
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Modern methods of railway track safety inspection

机译：现代铁路轨道安全检查方法

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Railway and transit tracks are designed and constructed as smooth segments of straight lines and circular curves linked by transitional spirals. Dynamic traffic loads, material wear and environmental cycles gradually produce deviations in the track from the original smooth geometry. Such deviations lead to rough ride in the vehicles and furthermore higher dynamic vehicle-track interaction forces which lead to faster deviation growth. To monitor the geometric condition of the track and to guide maintenance and repair, hand tools were used to take consecutive measurements by track walkers. Modern state-of-the-art technology has since replaced the traditional slow and painful measurement practice. Inspections are now done from a moving vehicle at hundreds of km per hour without contacting the track. All track geometry parameters are measured up four times per meter; data are analysed in real time by onboard software to identify the location and magnitudes of deviations which exceeds the acceptable tolerance. Historical measurements are stored in databases which are used to establish degradation trends and to guide the planning of maintenance. With the help of high-speed imaging technology, automated video inspection systems are installed on some vehicles to detect other faults in the track structure. Four types of such modern inspection tools are introduced in the paper presentation. These are: a single-car comprehensive inspection vehicle; a dedicated inspection train; a highway-railway dual usage truck and an unmanned inspection system. Actual operational systems are used as examples to illustrate the design and capabilities of each of these types of inspection tools.
机译：铁路和运输轨道的设计和构造为直线和过渡螺旋连接的圆形曲线的平滑片段。动态交通负荷，材料磨损和环境周期逐渐从原始光滑几何形状中产生轨道的偏差。这种偏差导致车辆中的粗糙骑行，并且还具有更高的动态车辆轨道相互作用力，这导致更快的偏差生长。要监控轨道的几何状态并指导维护和修复，使用手动工具来通过轨道步行者连续测量。现代最先进的技术已经取代了传统的缓慢和痛苦的测量实践。现在从每小时数百km时从移动的车辆开始检查，而不接触轨道。所有轨道几何参数每米测量四次;通过车载软件实时分析数据，以识别超过可接受的容差的偏差位置和大小。历史测量存储在用于建立劣化趋势并指导维护规划的数据库中。借助高速成像技术，自动视频检测系统安装在某些车辆上，以检测轨道结构中的其他故障。纸张介绍中引入了四种类型的这种现代化检查工具。这些是：单车综合检查车辆;专门的检查列车;公路铁路双使用卡车和无人检测系统。实际操作系统用作示例以说明这些类型的检查工具中的每种的设计和能力。

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