The invention provides an
engineering method of a prefabricated and spliced well-sinking type parking garage and the parking garage. The
engineering method comprises the following construction steps that 1, a plurality of blade foot blocks are spliced to form a blade foot layer; 2,
reinforced concrete is cast into the inner cavity of the blade foot layer at a time, then soil is excavated from the ground defined by the blade foot layer to make the blade foot layer sink in plate; 3, standard blocks are hoisted to be spliced with the top of an installed shaft, and the adjacent standard blocks are spliced in sequence to form an upper layer of the shaft; 4,
reinforced concrete is cast into the inner cavity of a standard layer at a time, soil excavation continues till the shaft in the layer sinks in place; 5, the steps 3 and 4 are repeated to install other
layers of the shaft till the shaft sinks to reach preset depth layer by layer; 6, concrete is cast on the bottom surface of the shaft in a layered mode to achieve bottom sealing; 7, a garage parking frame body structure is installed, and the top is sealed. The method adopts
prefabrication, site splicing and inner cavity concrete
casting, the purposes of shortening a construction period, reducing construction interference and reducing
pollution are achieved, the advantages of the mechanical properties of a well-sinking structure are fully utilized, and a timbering process and costs during underground excavation are decreased.