在混凝土中使用智能手机配备的手持GPR和高压曲线配套与天线距离考虑的毫米精度深度估计
Shunsuke Iwai1, Tsukasa Mizutani1
1Institute of Industrial Science, The University of Tokyo, 4-6-1, Koamaba, Meguro-ku, Tokyo, 153-8506, Japan.
Heliyon
|October 14, 2024
概括
这项研究引入了一种用于地面透雷达 (GPR) 的新算法,用于使用单一设备测量杆深度和覆盖厚度. 该方法提高了准确性,并超越了现有技术的局限性.
科学领域:
- 地质物理学 地质物理学
- 土木工程 土木工程是指土木工程.
- 非破坏性测试 不破坏性测试
背景情况:
- 精确测量杆盖厚度和深度对于结构设施管理至关重要.
- 目前的方法通常需要独立的设备,如地面透雷达 (GPR) 和电磁感应 (EMI),增加复杂性.
- 现有的技术在深度测量和准确性方面存在局限性.
研究的目的:
- 从单个GPR测量中开发一种新的算法来确定钢筋深度和相对允许度.
- 通过整合深度估计和覆盖厚度确定来克服现有方法的局限性.
- 为了达到日本非破坏性检查协会 (JSNDI) 设定的性能标准.
主要方法:
- 利用过度曲线 适合GPR反射图像用于深度和允许度估计.
- 开发了一种算法,用于自动检测超模的中线.
- 实现了超波拉分离 (左侧和右侧),通过排除顶点来提高安装精度.
- 包含了一个理论模型,用于计算天线间距离.
主要成果:
- 算法成功地从GPR数据中确定了钢筋深度和相对允许度.
- 实现了满足JSNDI覆盖厚度测量要求的性能.
- 经过证明的准确性超过了EMI方法的100毫米深度限制.
- 这种方法即使在更深的钢筋上也被证明是有效的.
结论:
- 开发的算法允许使用单个GPR设备进行准确的铁杆深度和覆盖厚度评估.
- 这种综合方法简化了地下调查,提高了结构维护的效率.
- 该算法的超出100毫米的测量能力比传统的EMI方法具有显著的优势.
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