Dynamic Characteristics and Vibration Response of Light-rail Continuous Rigid Frame Bridge with Flexible Thin-walled High Piers

Taking the light rail overpas of Guangzhou Metro Line No.14 as the research background, through the pulsation test and metro operation test analysis, the results show that the measured fundamental frequency of the bridge is 2.197Hz, which is greater than the theoretical value(1.794Hz）, and the stiffness of the bridge reaches the requirements; the dynamic response of the flexible thin-walled side pier is not sensitive to the train speed, and maximum force state of flexible thin-walled side pier is not at the time of train braking and meeting status.