Aimed to investigate the seismic and isolated performance of one pure continuous girder bridge across ocean,the seismic and isolated experimental model with the scale of 1∶10 was designed and made by simplifying continuous girder bridge as single pier model,and the shaking table test of seismic single pier model and isolated single pier model with lead rubber bearing (LRB) were carried out.Then the acceleration response,shear force of LRB,shear force at the top of pier and hysteretic performance of LRB were studied under inputting earthquake of 120,600,1 200 and 2 400 years return period respectively, and the state of seismic and isolated pier under different earthquake could be judged according to the experimental result of low-period recycle test. Experimental results showed that the acceleration response of superstructure of isolated bridge is reduced to 54% and 55% of seismic bridge under earthquake of 120 and 600 years return period respectively.With the increase of structural response,the displacement of isolated layer will become larger and the ability of energy dissipation of LRB will become stronger.The whole pier of isolated bridge is in the elastic state and the seismic response of pier is less the cracking load under earthquake of 2 400 years return period. However, the pier of seismic bridge had been reaches to cracking load of pier under earthquake of 600 years return period.
