Estimation of nonlinearities from pseudodynamic and dynamic responses of bridge structures using the Delay Vector Variance method


Autoria(s): Jaksic, Vesna; Mandic, Danilo P; Karoumi, Raid; Basu, Bidroha; Pakrashi, Vikram
Data(s)

2016

Resumo

Analysis of the variability in the responses of large structural systems and quantification of their linearity or nonlinearity as a potential non-invasive means of structural system assessment from output-only condition remains a challenging problem. In this study, the Delay Vector Variance (DVV) method is used for full scale testing of both pseudo-dynamic and dynamic responses of two bridges, in order to study the degree of nonlinearity of their measured response signals. The DVV detects the presence of determinism and nonlinearity in a time series and is based upon the examination of local predictability of a signal. The pseudo-dynamic data is obtained from a concrete bridge during repair while the dynamic data is obtained from a steel railway bridge traversed by a train. We show that DVV is promising as a marker in establishing the degree to which a change in the signal nonlinearity reflects the change in the real behaviour of a structure. It is also useful in establishing the sensitivity of instruments or sensors deployed to monitor such changes. (C) 2015 Elsevier B.V. All rights reserved.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/52901/1/Phy-A_441_100_2016.pdf

Jaksic, Vesna and Mandic, Danilo P and Karoumi, Raid and Basu, Bidroha and Pakrashi, Vikram (2016) Estimation of nonlinearities from pseudodynamic and dynamic responses of bridge structures using the Delay Vector Variance method. In: PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 441 . pp. 100-120.

Publicador

ELSEVIER SCIENCE BV

Relação

http://dx.doi.org/10.1016/j.physa.2015.08.026

http://eprints.iisc.ernet.in/52901/

Palavras-Chave #Civil Engineering
Tipo

Journal Article

PeerReviewed