Monitoring of Large Diameter Sewage Collector Strengthened with Glass-Fiber Reinforced Plastic (GRP) Panels by Means of Distributed Fiber Optic Sensors (DFOS)
Paweł Popielski,
Bartosz Bednarz,
Rafał Sieńko,
Tomasz Howiacki,
Łukasz Bednarski,
Bartosz Zaborski
Affiliations
Paweł Popielski
Faculty of Building Services, Hydro and Environmental Engineering, Warsaw University of Technology, Nowowiejska Street 20, 00-653 Warsaw, Poland
Bartosz Bednarz
Faculty of Building Services, Hydro and Environmental Engineering, Warsaw University of Technology, Nowowiejska Street 20, 00-653 Warsaw, Poland
Rafał Sieńko
Reinforced Concrete Structures Division, Faculty of Civil Engineering, Cracow University of Technology, Warszawska Street 24, 31-155 Cracow, Poland
Tomasz Howiacki
Reinforced Concrete Structures Division, Faculty of Civil Engineering, Cracow University of Technology, Warszawska Street 24, 31-155 Cracow, Poland
Łukasz Bednarski
Mechanics and Vibroacoustics, Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology in Krakow, Mickiewicza Al. 30, 30-059 Krakow, Poland
Bartosz Zaborski
MPWIK SA (Municipal Water Supply and Sewerage Company in Warsaw Joint Stock Company—Bureau of Research and Technology), Starynkiewicza 5 Street, 02-015 Warsaw, Poland
Diagnostics and assessment of the structural performance of collectors and tunnels require multi-criteria as well as comprehensive analyses for improving the safety based on acquired measurement data. This paper presents the basic goals for a structural health monitoring system designed based on distributed fiber optic sensors (DFOS). The issue of selecting appropriate sensors enabling correct strain transfer is discussed hereafter, indicating both limitations of layered cables and advantages of sensors with monolithic cross-section design in terms of reliable measurements. The sensor’s design determines the operation of the entire monitoring system and the usefulness of the acquired data for the engineering interpretation. The measurements and results obtained due to monolithic DFOS sensors are described hereafter on the example of real engineering structure—the Burakowski concrete collector in Warsaw during its strengthening with glass-fiber reinforced plastic (GRP) panels.
