Strategies and tools for the monitoring of concrete bridges

Abstract

The paper presents a review of testing methods, a proposal for classifying the strategies, and tools applied in the monitoring of concrete bridges, the required consistent taxonomy of defects, and also the degradation mechanisms that are typical for such structures. Two main strategies of bridge monitoring are distinguished and described: inspection‐based monitoring and device‐based monitoring. The basic functional components of both types of monitoring systems are also presented. Monitoring methods, including nondestructive and semi‐destructive techniques, as well as various types of sensors based on physical, chemical, and biological technologies, are discussed and classified. The general rules of the implementation and operation of bridge monitoring systems are presented while taking into account the results of international research projects and contemporary practical experience. The considered issues are related to the fib Model Code 2020 (MC2020), which focuses on the evaluation of structural performance and which is assisted by monitoring and testing.

DFOS measurements for strain analysis of anchorage zone in 57‐year‐old posttensioned precast girder using static and high‐frequency approach

“…These decisions have significant economic, social and financial consequences and to be made optimally 3,4 they should be based on comprehensive and reliable data. This is why structural health monitoring systems 5 are becoming more and more appreciated in geotechnics and civil engineering applications 6 . Many safety‐critical structures are equipped with automatic devices for continuous monitoring of changes in selected physical quantities (e.g., strain, displacement, vibration, temperature, etc.)…”

Non-Destructive Testing of the Longest Span Soil-Steel Bridge in Europe—Field Measurements and FEM Calculations

“…Because of that, great attention is focused on understanding of the structures response, enabling appropriate failure prevention, determination of real properties of the built-in material, identification and detection of damage, and failure mechanisms or monitoring of structure health (SHM). A lot of review papers have been written that gather knowledge about non-destructive testing of different structures, see for example [1][2][3][4][5][6]. In this article, we deal with non-destructive testing issues related to: detailed, automated, high-accuracy geodetic measurements, especially using terrestrial laser scanning (TLS); determination of structural response of a bridge; structural identification (St-Id) processes; and structural health monitoring (SHM).…”

Analysis of steel corrosion‐induced surface damage evolution of magnesium oxychloride cement concrete through gray‐level co‐occurrence matrices

“…23,24 Therefore, it is urgent to realize the dangers and early warning signs of concrete buildings and to apply intelligent maintenance in advance to avoid human casualties and the collapse of concrete buildings. [25][26][27][28] The internal damage information of concrete specimens can be obtained by non-destructive testing, such as X-ray computed topography technology. [29][30][31][32][33][34] However, due to the size problem of existing buildings, it is difficult to achieve X-ray computed topography (CT) for internal damage detection.…”

“…The later maintenance and repair of concrete buildings are very important to extend their service time role 23,24 . Therefore, it is urgent to realize the dangers and early warning signs of concrete buildings and to apply intelligent maintenance in advance to avoid human casualties and the collapse of concrete buildings 25–28 …”