The application of Pushover method on complex bridge seismic design

摘要

Elasto-plastic seismic response analysis of complex bridge requires large computation, thus in practical engineering design this method can be simplified according to finite energy principle, finite displacement principle and Pushover method or other approximation algorithms. Finite energy principle and finite displacement principle are applied to piers with simple damage mode, and the two principles differ in structure's natural mode of vibration. Pushover applied to complex structures which can't be analyzed as single pier. Pushover gives maximum seismic response by static nonlinear analysis, and current Japanese specification adopts Pushover for complex bridge seismic design such as continuous rigid bridges.