Seismic and isolation design schemes comparison for a multi-span continuous RC girder bridge

The shortage of original seismic design and the isolation design are discussed.According to mechanical behavior and the operating feature of each seismic construction,six feasible seismic designs are proposed from the theory of seismic design and isolation design.The design schemes are compared with each other based on the FEM computational model results which are conducted by time history analysis under the background of approaching bridge from a sea-crossing project.The results of seismic response analysis show that the design scheme can provide better seismic effect by using properly seismic construction,but the working principle and applicable scope are different.