Print Email Facebook Twitter GPS for structural health monitoring: A case study on the Basarab overpass cable-stayed bridge Title GPS for structural health monitoring: A case study on the Basarab overpass cable-stayed bridge Author Lepadatu, L. Tiberius, C.C.J.M. Faculty Civil Engineering and Geosciences Department Geoscience & Remote Sensing Date 2014-04-08 Abstract The Basarab cable-stayed bridge is a newly built structure in Bucharest, Romania, which was inaugurated in June 2011. Before the oficial opening, in order to assure its qualification for trafic, it had to pass several loading tests with convoys of trucks and trams. For this, besides a priori evaluation using the Finite Element Method (FEM), levelling and acceleration measurements were made to identify vertical displacements, as well as vibration frequencies of the bridge. The three-day loading trial of the bridge represented a good opportunity for setting-up a GPS campaign for structural monitoring of the Basarab bridge. Taking advantage of the redundancy obtained via simultaneous multi-sensor measurements, it was possible to compare and validate the GPS estimated displacements with both FEM and levelling. Moreover, the dynamic behaviour of the bridge during a dynamic loading test was evaluated using a 20 Hz GPS observation rate and validated afterwards with vibration frequency estimates from acceleration time series. Along with simulations (FEM) and laboratory tests, the in situ monitoring of a structure has a particular importance in establishing the safety of a newly-built structure. Furthermore, in some cases permanent monitoring is needed for safety and economic reasons, especially for strategic structures such as dams and bridges. GPS technology can satisfy this request due to its real-time processing capability and thus it can be looked upon as a new and promising tool for dynamic evaluation of engineering structures. In this contribution we have also assessed the performance of GPS with regard to accuracy and false alarm probability demands for the continuous monitoring of the Basarab cable-stayed bridge. Subject GPScable-stayed bridge monitoringdetection probabilityharmonic analysis To reference this document use: http://resolver.tudelft.nl/uuid:c0673009-5a4c-497f-b545-4ac1eb997dfc DOI https://doi.org/10.1515/jag-2013-0020 Publisher De Gruyter Embargo date 2015-04-08 ISSN 1862-9016 Source http://www.degruyter.com/view/j/jag.2014.8.issue-1/jag-2013-0020/jag-2013-0020.xml Source Journal of Applied Geodesy, 8 (1), 2014 Part of collection Institutional Repository Document type journal article Rights (c) 2014 The Author(s)De Gruyter Files PDF 303634.pdf 4.83 MB Close viewer /islandora/object/uuid:c0673009-5a4c-497f-b545-4ac1eb997dfc/datastream/OBJ/view