Construction method of raft foundation reinforcing cage for containment vessel of nuclear power plant

The invention relates to a construction method of a raft foundation reinforcing cage for a containment vessel of a nuclear power plant. The method comprises the following steps of: 1, binding steel bars outside a construction field to form a reinforcing cage module; 2, hoisting and transporting the reinforcing cage module to a containment vessel foundation pit in the construction field; and 3, finely adjusting the position of the reinforcing cage module in the containment vessel foundation pit, fixing the reinforcing cage module and binding steel bars outside the construction field to form a next reinforcing cage module for hoisting into the containment vessel foundation pit and laminating and fixing on the reinforcing cage module. The method has the advantages that: a single reinforcing cage module is bound outside the construction field, and the reinforcing cage module is hoisted, so that the aims of shortening the construction period and increasing the working efficiency can be fulfilled.