Experimental Study on the Dynamic Performance of Long -Span Steel Arch Bridge in Passenger Dedicated Line

By the experiment on dynamic performance of long-span steel arch bridge, the natural frequency and dynamic responses of the 140m steel box-section tied arch bridge over the Ting Si River Bridge in the Wuhan-Guangzhou Passenger Dedicated Line are tested. the tested results of the bridge dynamic responses show that the bridge structure can meet the security requirements when CRH2 EMU runs on it in the speed of 250 to 350km/h.the lateral and vertical stiffness are larger, the vertical and lateral natural frequencies and the other dynamic performances of the bridge can meet the requirements of the relevant norms, When the CRH2 EMU runs across the steel box-section arch bridge in different speeds.