铁路桥梁状况监测使用车辆距离来检测冲击
Claire McGeown1, David Hester2, Eugene J OBrien1
1School of Civil Engineering, University College Dublin, D04 V1W8 Dublin, Ireland.
Sensors (Basel, Switzerland)
|March 13, 2024
概括
通过分析车辆的距离,可以检测到桥梁扫地. 这项研究表明,车辆旋转信号的变化,特别是斜率的变化,可靠地表明桥梁中存在基础扫.
科学领域:
- 土木工程 土木工程是指土木工程.
- 结构健康监测 结构健康监测
- 地质技术工程 地质技术工程
背景情况:
- 基础扫描对整合性和安全性构成重大风险.
- 目前用于扫检测的方法可能昂贵且耗时.
- 开发新的非侵入性监测技术对于主动维护至关重要.
研究的目的:
- 引入和验证用于桥梁基础检查的新状态监测概念.
- 调查使用车辆斜率作为扫引发的桥梁刚度变化的指标.
- 通过数值建模和实验室实验来证明这种方法的可行性.
主要方法:
- 采用二维车辆-桥梁交互 (VBI) 建模,通过减少码头硬度来模拟扫除.
- 分析了一种具有不同质量和速度的三车列车模型,以分析在配置轨道上的距离响应.
- 一个规模化的实验室实验涉及一辆拖拉机拖车穿过一座四跨桥,可调节码头支刚度以模拟扫地条件.
主要成果:
- 数字模拟表明,车辆距离分析可以清楚地识别scour的存在.
- 实验室实验始终显示,健康的和扫过的桥梁状态之间的车辆距离有明显的分歧.
- 该研究证实,车辆坡度是基础扫除效应的敏感指标.
结论:
- 车辆距离分析提供了一种有希望的,非侵入性的方法来监测桥梁扫地状态.
- 这项技术可以集成到现有交通中,以提供连续的,实时的桥梁健康状况评估.
- 进一步的研究可以探索现实世界的实施和各种车型,以获得更广泛的适用性.
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