Application of ARMAV for modal identification of the EmersonBridge

摘要

Modal identification is performed on measured data from the well known cable-stayed bridge (Bill Emerson Memorial Bridge). The ARMAV technique is employed to analyze the recorded ambient vibration data from sixteen of the eighty-four channels of acceleration from the bridge. To validate the results, the modal identification results obtained through ARMAV are compared to the modal parameters from an existing (without updating methods) finite element model of the bridge built based on the drawings. Five vertical vibrational modes below 1 Hz are identified and validated through comparison with the model.