基于3D GPR和有限元模型测量裂形态的高速公路路面结构状况的评估
Zhonglu Cao1,2, Dianguang Cao2, Haolei Chang3
1Tianjin Port Engineering Institute Co., Ltd., of CCCC First Harbor Engineering Co., Ltd., Tianjin 300222, China.
Materials (Basel, Switzerland)
|July 30, 2025
概括
本研究引入了使用3D地面透雷达 (GPR) 和有限元素建模 (FEM) 来检测和评估内部路面结构裂的新框架. 该方法准确地识别了裂的严重程度,有助于路面维护规划.
科学领域:
- 铺路工程工程 铺路工程
- 地质物理学 地质物理学
- 计算力学 计算力学 计算力学
背景情况:
- 青路面的内部结构裂是表面方法无法检测到的关键困扰.
- 当前的评估技术往往忽略了这些内部裂,阻碍了准确的评估和维护.
- 有效地管理青路面需要了解和量化内部结构损坏.
研究的目的:
- 开发和验证一个新的框架来评估青路面内部结构裂的严重性.
- 整合三维地面穿透雷达 (3D GPR) 与有限元模型 (FEM) 进行裂纹评估.
- 提出新的指数来量化裂深度和表面反射,以分类损坏程度.
主要方法:
- 使用3D GPR来确定四层青路面内部结构裂的尺寸和深度.
- 采用3D FEM模拟来分析结构裂对路面承载能力和偏移的影响.
- 开发了路面结构裂纹指数 (PSCI) 和结构裂纹反射比率 (SCRR) 来分类裂纹严重程度.
主要成果:
- 结构裂对水平屈曲的影响取决于距离,在20厘米区域内具有显著的影响.
- 拟议的PSCI和SCRR指数有效地将裂严重程度分为没有,低或高.
- 在一条132公里长的高速公路上进行的实地实验表明,与核心数据相比,准确率为94.4%.
- 在PSCI和路面曲折之间发现了强烈的相关性 (R2 = 0.92),支持基于绩效的维护.
- 结构裂和表面裂之间存在显著的相关性 (65.8%).
结论:
- 组合的3D GPR和FEM框架为评估青路面内部结构裂纹严重性的准确方法提供了准确的方法.
- 开发的PSCI和SCRR指数为基于绩效的路面管理提供了可靠的指标.
- 这些发现支持主动维护策略,将内部裂评估与路面性能和表面状况联系起来.
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