Field Vibration Test of a Long-Span Cable-Stayed Bridge by Large Exciters

Experimental and analytical studies on dynamic characteristics of a large span cable-stayed bridge

“…The successes of forced vibration tests are limited for relatively small structures. In the case of large and flexible bridges like cable-stayed or suspension bridges, it often requires heavy equipment and involves important resources to provide a controlled excitation at sufficiently high levels [11], which becomes difficult and costly. Forced vibration tests are directly related with the standard techniques of modal parameter estimation that were previously developed in mechanical and aerospace engineering.…”

An experimental study on active tendon control of cable‐stayed bridges

“…Stable steady-state responses with and without control were obtained by applying a perturbation technique to equations (14) to ( 16).69 '…”

“…The sag-induced force S,ii(t) and stiffness variation Rlu(t)y, ( t ) were neglected and the active tendon force P,u(t) was replaced by 2<;mgwgg. Stable steady-state responses with and without control were obtained by applying a perturbation technique to equations (14) to ( 16).69 '…”

Fast Bayesian approach for modal identification using free vibration data, Part I – Most probable value

“…Economy is a significant advantage, although the signal-to-noise (s/n) ratio and hence the identification possibility/quality cannot be directly controlled. In a forced vibration test, artificial known excitation is applied to the structure [7][8][9][10]. The vibration level and hence the s/n ratio can be directly controlled and enhanced significantly.…”