Seismic Performance Analysis on Long Continuous Rigid Frame Bridge with High Piers

Taking a long prestressed concrete continuous rigid frame bridge with high piers in the southwest mountainous area as an example, a finite element analysis model was established by using Midas civil, and the free vibration features of the bridge were analyzed. The seismic performance of the bridge under the action of E1 and E2 earthquakes is analyzed by nonlinear time-procedure analysis.