Multi-pier-column pier connecting mechanism for rapid installation

The invention discloses a multi-pier-column pier connecting mechanism for rapid installation. The mechanism comprises a connecting device, the connecting device comprises a lower panel fixedly connected with a main rib of a connecting bearing platform, an upper panel, a welding seam and a stiffening rib; the top surface of the lower panel is provided with a lower butt joint gap area and a lower grouting seam; the upper panel is fixed to a main rib of a pier column, an upper butt joint gap area and an upper grouting seam are arranged on the bottom face of the upper panel, and the upper panel corresponds to the lower grouting seam and communicates with the lower grouting seam; the welding seam is connected with the upper panel and the lower panel; and the stiffening rib is of an outer wrapped concrete structure and is arranged on the outer side of the pier column and the connecting bearing platform. According to the method, matched vertical ribs and embedded connecting steel bar holes are arranged on the periph