Anti-seismic structure for bottom of pier and implementation method

The anti-seismic structure comprises a pile group foundation and a bearing platform built at the top end of a pile group in a casting mode, a pier base is arranged on the bottom face of the pier, the shape of the cross section of the pier base is the same as the shape of the cross section of the pier, and the length and the width of the cross section of the pier base are larger than the corresponding length and the corresponding width of the cross section of the pier. The distance between the outer side edge of the bridge pier base and the corresponding side wall of the bridge pier is 100-120 cm, the bridge pier is placed on the bearing platform in a floating mode through the bridge pier base, and a bearing platform limiting device is arranged between the bridge pier base and the bearing platform. The bearing platform limiting device comprises a limiting clamping column device or a groove limiting device. The bridge pier has the function of reducing horizontal and vertical destructive power of an earthquake,