Bridge Testing With Ground-Based Interferometric Radar: Experimental Results
- SO.IN.G Strutture e Ambiente S.r.l., Via delle Corallaie 24/4, Livorno (Italy)
The research of innovative non-contact techniques aimed at the vibration measurement of civil engineering structures (also for damage detection and structural health monitoring) is continuously directed to the optimization of measures and methods. Ground-Based Radar Interferometry (GBRI) represents the more recent technique available for static and dynamic control of structures and ground movements.Dynamic testing of bridges and buildings in operational conditions are currently performed: (a) to assess the conformity of the structure to the project design at the end of construction; (b) to identify the modal parameters (i.e. natural frequencies, mode shapes and damping ratios) and to check the variation of any modal parameters over the years; (c) to evaluate the amplitude of the structural response to special load conditions (i.e. strong winds, earthquakes, heavy railway or roadway loads). If such tests are carried out by using a non-contact technique (like GBRI), the classical issues of contact sensors (like accelerometers) are easily overtaken.This paper presents and discusses the results of various tests carried out on full-scale bridges by using a Stepped Frequency-Continuous Wave radar system.
- OSTI ID:
- 21366742
- Journal Information:
- AIP Conference Proceedings, Vol. 1253, Issue 1; Conference: 9. international conference on vibrational measurements by laser and non-contact techniques and short course, Ancona (Italy), 22-25 Jun 2010; Other Information: DOI: 10.1063/1.3455459; (c) 2010 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ACCELEROMETERS
BRIDGES
CIVIL ENGINEERING
EARTHQUAKES
FREQUENCY MEASUREMENT
GROUND MOTION
INTERFEROMETRY
MONITORING
OPTIMIZATION
RADAR
RAILWAYS
SENSORS
TESTING
ENGINEERING
MEASURING INSTRUMENTS
MECHANICAL STRUCTURES
MOTION
RANGE FINDERS
SEISMIC EVENTS