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Modelling behaviour of bridge pylon for test load using subspace method

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2015
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Authors
Milovanović, Branko
Marošan, Stevan
Pejić, Marko
Pejović, Milutin
Article (Published version)
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Abstract
This paper presents the procedure of structure behaviour analysis and modelling applying the subspace method, which has been used in system identification but not in geodetic practice. This method enables the state space dynamic model parameters to be estimated. The equation error model has been used to form the dynamic system model. In addition, two pylons of the same bridge have been demonstrated to behave differently due to the position of the Sun. The entire system identification procedure has been demonstrated in modelling behaviour of the "Sloboda" bridge over the Danube pylon in direction of Novi Sad. The measurements were compiled during the bridge test load conducted in September 2005. The input signals subject to the analysis are the long-periodic signals: namely, the force in pylon cables and temperature. The output signals are pylon top displacements. The civil engineering experts' requirements called for identification of all displacements exceeding 10 mm. The pylon top po...sition was determined by static GPS along with the 25- minute measurements per epoch.

Keywords:
dynamic systems identification / subspace method / state space / pylon
Source:
Geodetski vestnik, 2015, 59, 1, 116-134
Publisher:
  • Zvava Geodetov Slovenije
Projects:
  • Ministry of Education, Science and Technological Development of the Republic of Serbia

DOI: 10.15292/geodetski-vestnik.2015.01.116-134

ISSN: 0351-0271

WoS: 000353343300007

Scopus: 2-s2.0-84925946048
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URI
http://grafar.grf.bg.ac.rs/handle/123456789/707
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  • Radovi istraživača / Researcher's publications
  • Катедра за геодезију и геоинформатику
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