Identification of Wind-Excited Suspension Bridges for SHM: a Feasibility Study

摘要

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