老旧石拱桥加固结构损伤检测方法
Damage Detection Method for Reinforced Structure of Old Stone Arch Bridge
为了解决老旧石拱桥因水流冲击导致的砂浆脱离和开裂下沉等安全隐患,延长其使用寿命,提出基于几何形态重建的老旧石拱桥加固结构损伤多波段红外检测方法。结合图像预处理技术剔除干扰因素,并构建高维度像素矩阵,采用边缘检测与细化技术,还原损伤区域的几何形态。通过高斯分布模型对重构后的损伤区域进行深入剖析,揭示损伤的内部结构特征,得到的多波段红外检测结果与真实损伤完全一致,最高的丢失率结果为0.071。本文提出的检测方法可为老旧石拱桥的加固维护提供技术支持。
In order to address safety hazards such as mortar detachment, cracking, and sinking caused by water flow impact on old stone arch bridges, and to extend their service life, a multi band infrared detection method for structural damage of reinforced old stone arch bridges based on geometric shape reconstruction is proposed. By combining image preprocessing techniques to eliminate interference factors and constructing a high-dimensional pixel matrix, edge detection and refinement techniques are used to restore the geometric shape of the damaged area. By using Gaussian distribution model to conduct in-depth analysis of the reconstructed damaged area, the internal structural characteristics of the damage are revealed. The obtain a multi band infrared detection result that is completely consistent with the actual damage, with the highest loss rate result being 0.071. The detection method proposed in this article can provide technical support for the reinforcement and maintenance of old stone arch bridges.
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云南交通职业技术学院科学研究重点基金项目(2023KJ002)
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