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Selection of measurement sets in static structural identification of bridges using observability trees
dc.contributor.author | Lozano Galant, José Antonio |
dc.contributor.author | Nogal Macho, María |
dc.contributor.author | Turmo Coderque, José |
dc.contributor.author | Castillo Ron, Enrique |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria de la Construcció |
dc.date.accessioned | 2015-09-03T13:15:36Z |
dc.date.created | 2015-05 |
dc.date.issued | 2015-05 |
dc.identifier.citation | Lozano-Galant, J.A., Nogal, M., Turmo, J., Castillo, E. Selection of measurement sets in static structural identification of bridges using observability trees. "Computers and concrete", Maig 2015, núm. 5, p. 771-794. |
dc.identifier.issn | 1598-8198 |
dc.identifier.uri | http://hdl.handle.net/2117/76604 |
dc.description.abstract | This paper proposes an innovative method for selection of measurement sets in static parameter identification of concrete or steel bridges. This method is proved as a systematic tool to address the first steps of Structural System Identification procedures by observability techniques: the selection of adequate measurement sets. The observability trees show graphically how the unknown estimates are successively calculated throughout the recursive process of the observability analysis. The observability trees can be proved as an intuitive and powerful tool for measurement selection in beam bridges that can also be applied in complex structures, such as cable-stayed bridges. Nevertheless, in these structures, the strong link among structural parameters advises to assume a set of simplifications to increase the tree intuitiveness. In addition, a set of guidelines are provided to facilitate the representation of the observability trees in this kind of structures. These guidelines are applied in bridges of growing complexity to explain how the characteristics of the geometry of the structure (e.g. deck inclination, type of pylon-deck connection, or the existence of stay cables) affect the observability trees. The importance of the observability trees is justified by a statistical analysis of measurement sets randomly selected. This study shows that, in the analyzed structure, the probability of selecting an adequate measurement set with a minimum number of measurements at random is practically negligible. Furthermore, even bigger measurement sets might not provide adequate SSI of the unknown parameters. Finally, to show the potential of the observability trees, a large-scale concrete cable-stayed bridge is also analyzed. The comparison with the number of measurements required in the literature shows again the advantages of using the proposed method. |
dc.format.extent | 24 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Tipologies estructurals |
dc.subject.lcsh | Bridges--Testing |
dc.subject.other | bridge |
dc.subject.other | structural system identification |
dc.subject.other | observability trees |
dc.subject.other | damage detection |
dc.subject.other | measurement set |
dc.subject.other | CABLE-STAYED BRIDGES |
dc.subject.other | DAMAGE IDENTIFICATION |
dc.subject.other | SYSTEM-IDENTIFICATION |
dc.subject.other | PARAMETER-ESTIMATION |
dc.subject.other | SENSOR |
dc.subject.other | MODEL |
dc.subject.other | SIMULATION |
dc.title | Selection of measurement sets in static structural identification of bridges using observability trees |
dc.type | Article |
dc.subject.lemac | Ponts -- Proves |
dc.contributor.group | Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció |
dc.identifier.doi | 10.12989/cac.2015.15.5.771 |
dc.relation.publisherversion | http://www.techno-press.org/download.php?journal=cac&volume=15&num=5&ordernum=4 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 16844933 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Lozano-Galant, J.A.; Nogal, M.; Turmo, J.; Castillo, E. |
local.citation.publicationName | Computers and concrete |
local.citation.volume | 15 |
local.citation.number | 5 |
local.citation.startingPage | 771 |
local.citation.endingPage | 794 |
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