通过地面透雷达检测到的道路裂的属性特征研究
Shili Guo1, Mingyu Yu1, Zhiwei Xu2
1Institute of Environmental and Biological Engineering, Henan University of Engineering, Zhengzhou 451191, China.
Sensors (Basel, Switzerland)
|February 13, 2025
概括
地面透雷达 (GPR) 早期信号 (ETS) 可以精确地检测道路裂属性. 该方法量化了裂宽度,类型和方向,以有效修复路面.
科学领域:
- 铺路工程工程的铺路工程.
- 地质物理方法 地质物理方法
- 非破坏性测试是指非破坏性测试.
背景情况:
- 道路裂是影响结构完整性的路面困境的一个普遍形式.
- 精确地描述裂属性 (类型,位置,宽度,方向) 对于有效的维护和维修策略至关重要.
- 目前用于裂纹检测和表征的方法可能缺乏精度,阻碍了有针对性的干预.
研究的目的:
- 调查地面透雷达 (GPR) 信号幅度和裂纹特征之间的关系.
- 开发一种方法,使用GPR早期信号 (ETS) 和反射波来准确检测裂顶部和底部的位置,宽度和类型.
- 为定量裂纹评估和分类提供理论基础.
主要方法:
- 结合数值模拟与现场数据分析.
- 分析了GPR早期信号 (ETS) 幅度的变化,与裂顶部和宽度相关.
- 研究了裂底变化对雷达反射波幅的影响.
主要成果:
- 在ETS振幅变化百分比中明显的"∨"形的下降表明了裂顶部.
- 裂宽度与ETS振幅变化百分比之间的正相关性允许量化宽度估计.
- 反射波的低幅变化百分比的明显的"&;"形下降标识了裂底部,反射裂的幅度比疲劳裂高3倍.
结论:
- GPR ETS和反射波为裂顶部和底部检测提供了可靠的指标.
- 该方法可以对裂宽度进行定量估计,并区分裂类型 (反射与疲劳).
- 裂的方向可以通过连接关键振幅变化顶点来确定,指导精确,最少侵入性的道路维修,并延长路面的使用寿命.
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