在大型压力箱测试试验箱中,投票率睡眠者的行为
Gernot Grohs1, Paul Pircher2, Martin Quirchmair3
1Institute of Railway Infrastructure Design, Graz University of Technology, Graz, Austria. grohs@tugraz.at.
Scientific reports
|May 14, 2025
概括
卧底 (USP) 通过减少不对称的负载和压磨损来提高铁路的耐用性. 它们促进了均的卧床定位和压力分布,增强了轨道几何和安全.
科学领域:
- 土木工程 土木工程是指土木工程.
- 铁路工程 铁路工程是指铁路工程.
- 地质技术工程 地质技术工程
背景情况:
- 由于卧床长度的变化,铁路转经历了不对称的负载,导致压载物磨损和沉积.
- 由于这些负载诱导的不连续性,维护轨道几何和安全是具有挑战性的.
- 了解从卧床转移到压载物的负载转移对于提高铁路耐用性至关重要.
研究的目的:
- 为了调查投票睡眠者的定居行为和压力分布.
- 评估卧底枕头 (USP) 在减轻负面影响方面的有效性.
- 为了比较带有和没有USP的负载转移特性.
主要方法:
- 大规模的实验室压载箱测试与循环负载.
- 在混凝土床上施加垂直循环负荷 (5-160 kN) 和恒定负荷 (10 kN).
- 使用了激光移位传感器和压力映射传感器 (Getzner传感器休眠技术).
- 对每个测试配置进行了超过400万次负载周期.
主要成果:
- 没有USP的睡眠者表现出渐变和不对称的结算模式.
- USP导致了更加统一和渐进的解决,压力峰值减少.
- 卧床变形和卧床下空隙形成显著减少了USP.
- 最初更大的振荡幅度与elasto-plastic USP稳定了随着时间的推移.
结论:
- 卧铺下提高铁路轨道性能,通过促进统一的负载分配和减少结算.
- USP减轻卧式变形和压载物降解,有助于改进轨道几何和安全.
- 该研究表明,USP在铁路基础设施维护和寿命方面具有显著的好处.
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