Seismic Design for Long Multi-Span Rigid Frame Continuous-Girder Bridge

In this article,a(48+4×80+48)m rigid frame continuous-girder bridge in a high seismic intensity region is taken as an example,and the whole process of seismic design of the long multi-span rigid frame continuous-girder bridge based on the current railway engineering seismic standard is introduced.Further,seismic responses of the conventional seismic design and the seismic isolation design with hyperboloid spherical seismic isolation bearings are respectively analyzed and compared,and every kind of design is respectively under the low-level earthquake,design earthquake and the high-level earthquake.Moreover,seismic checking-calculations are accordingly conducted according to the current seismic design standard.