Construction method for post-pouring settlement belt with simply supported fully-enclosed plate retainer structure

The invention discloses a construction method for a post-pouring settlement belt with a simply supported fully-enclosed plate retainer structure. The construction method is characterized in that wedge beams are arranged beside a main building and a skirt building, and the simply supported fully-enclosed plate retainer structure is arranged between the wedge beams of a main building structure plate and a skirt building structure plate after two side ring beams are poured. The whole post-pouring settlement belt is free of lack of hole and floor slab, so that water stop of a ground floor slab is effectively realized, construction of an underground structure is not affected by water leakage of the ground floor slab, and a high-altitude falling dangerous source of construction of an upper structure is eliminated.