Pushover Analysis Method of Cable sliding Friction Aseismic Bearing Bridges

Abstract:

An adaptive mass proportional pushover(AMPP) analysis method is proposed for pushover analysis of aseismic bridges with cable sliding friction bearing. Compared with modal pushover analysis(MPA) and first mode pushover analysis(Po 1) method, the applicability and effectivity of AMPP method for seismic performance evaluation of aseismic bridges with cable sliding friction bearing are studied. It turns out that pushover analysis method can be applied to evaluate seismic performance responses of aseismic bridges with cable sliding friction bearing. Compared with Po 1 and MPA, AMPP can lead to the attainment of improved predictions of key response parameters. MPA provides a good estimation for internal forces of substructure elements.