Seismic Response Analysis of Yachi River Super-large Bridge

For a bridge, the loss caused by the earthquake and secondary disaster is huge. Through building the finite element model of Yachi River super-large bridge and the approach bridge, as well as analyzing its vibration characteristics, the earthquake responses of the main bridge is achieved under uniform seismic excitation, on the condition that the pile-soil effect is excluded from consideration. Moreover, this paper investigates whether the contribution of vertical component of seismic waves on seismic response should be taken into consideration. The results indicate that the main bridge possesses strong coupling of lateral, longitudinal and vertical displacement component. And the impact of vertical seismic waves should be considered in the seismic design; moreover the arch springing should be separately analyzed.