This paper provides an overview of the existing health monitoring and assessment methods for masonry arch bridges. In addition, a novel “integrated” holistic non-destructive approach for structural monitoring of bridges using ground-based non-destructive testing (NDT) and the satellite remote sensing techniques is presented. The first part of the paper reports a review of masonry arch bridges and the main issues in terms of structural behaviour and functionality as well as the main assessment methods to identify structural integrity-related issues. A new surveying methodology is proposed based on the integration of multi-source, multi-scale and multi-temporal information collected using the Ground Penetrating Radar (GPR – 200, 600 and 2000 MHz central-frequency antennas) and the Interferometric Synthetic Aperture Radar (InSAR – C-band SAR sensors) techniques. A case study (the “Old Bridge” at Aylesford, Kent, UK – a 13^th century bridge) is presented demonstrating the effectiveness of the proposed method in the assessment of masonry arch bridges. GPR has proven essential at providing structural detailing in terms of subsurface geometry of the superstructure as well as the exact positioning of the structural ties. InSAR has identified measures of structural displacements caused by the seasonal variation of the water level in the river and the river bed soil expansions. The above process forms the basis for the “integrated” holistic structural health monitoring approach proposed by this paper.

本文概述了砌体拱桥的现有健康监测和评估方法。此外，提出了一种新颖的“综合”整体无损方法，用于使用地面无损检测（NDT）和卫星遥感技术进行桥梁结构监测。本文的第一部分报告了对砌体拱桥的审查以及在结构行为和功能方面的主要问题，以及用于识别与结构完整性相关的问题的主要评估方法。提出了一种新的测量方法，该方法是基于使用探地雷达（GPR – 200，200）收集的多源，多尺度和多时间信息的集成。600和2000 MHz中心频率天线）和干涉合成孔径雷达（InSAR – C波段SAR传感器）技术。案例研究（英国肯特郡艾尔斯福德的“旧桥” – 13^个世纪的桥梁），提出证明在砖石拱桥的评估了该方法的有效性。事实证明，GPR对于提供上层建筑的地下几何结构以及结构连接的精确位置方面的结构细节至关重要。InSAR已经确定了由河中水位的季节性变化和河床土壤扩张引起的结构位移的措施。以上过程构成了本文提出的“综合”整体结构健康监测方法的基础。