The paper presents an investigation on the accuracy of a sophisticated system identification technique in providing the modal parameters of wind-excited suspension bridges, using pseudoexperimental data. The aim is to quantify the bias produced by colored wind excitations, measurement noise and wind-structure interaction effects on the modal parameter estimates. In addition, as the accurate estimation of structural damping ratios is a priority for safety evaluations and structural health monitoring of long-span bridges, a particular attention is posed on the feasibility of the considered system identification technique for separating structural from aerodynamic damping.

Identification of wind-excited suspension bridges for SHM: a feasibility study

UBERTINI, Filippo;MATERAZZI, Annibale Luigi
2010

Abstract

The paper presents an investigation on the accuracy of a sophisticated system identification technique in providing the modal parameters of wind-excited suspension bridges, using pseudoexperimental data. The aim is to quantify the bias produced by colored wind excitations, measurement noise and wind-structure interaction effects on the modal parameter estimates. In addition, as the accurate estimation of structural damping ratios is a priority for safety evaluations and structural health monitoring of long-span bridges, a particular attention is posed on the feasibility of the considered system identification technique for separating structural from aerodynamic damping.
2010
9783857481222
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11391/144464
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