Prefabricated swing pier structure system, mounting method and application

The invention provides a prefabricated assembly type swing pier structure system. The prefabricated assembly type swing pier structure system comprises a prefabricated pier column, two sets of first bearing components and two sets of second bearing components. One group of first bearing components is connected between the prefabricated pier column and the pier bearing platform, the other group of first bearing components is connected between the prefabricated pier column and the cover beam, each first bearing component comprises a hoop and a connecting piece, the hoop is hooped at the end part of the prefabricated pier column, and the connecting piece is pressed on the cover beam or the pier bearing platform; the second bearing component comprises a plurality of inhaul cables connected between the hoop and the connecting piece. When an earthquake occurs, the prefabricated pier column swings, plastic damage or destruction of the pier is avoided, at the moment, the inhaul cable deforms to dissipate earthquake e