Pre-fabricated reinforcement cage structure and method of hoisting and assembling the same

A method of hoisting and assembling a pre-fabricated reinforcement cage structure, the method comprising the following steps:

• (a) providing a pre-fabricated reinforcement cage, the pre-fabricated reinforcement cage comprising:
• a plurality of rebars;
• and
• a plurality of stirrups binding to outer circumferences of and fixed to the plurality of rebars, the plurality of stirrups being spaced apart along a length direction of the rebars so that the plurality of rebars are substantially parallel to each other;
• (b) providing a first rebar-mounting frame comprising:
• a first top plate having a plurality of notches formed along an edge of the first top plate;
• a first bottom plate, wherein a first end portion of each of the plurality of rebars abuts against a first top surface of the first bottom plate;
• and
• a first lateral plate to which each of the first top plate and the bottom plate is connected;
• (c) inserting the first end portion of each of the plurality of rebars into each of corresponding notches of the first rebar-mounting frame, and detachably securing the first end portion of each of the plurality of rebars to the first rebar-mounting frame through a coupler, thereby aligning first end surfaces of the first end portion of the plurality of rebars;
• (d) providing a second rebar-mounting frame and detachably securing the second rebar-mounting frame to a second end portion of each of the plurality of rebars opposite to the first end of the plurality of rebars, the second rebar-mounting frame comprising at least one hook or hoist-ring mounted thereon;
• (e) hoisting the pre-fabricated reinforcement cage structure to above a plurality of to-be-connected rebars;
• (f) removing the first rebar-mounting frame from the pre-fabricated reinforcement cage structure and then adjusting a position of the pre-fabricated reinforcement cage structure so that each of the plurality of rebars of the pre-fabricated reinforcement cage structure is respectively aligned with and contacts a corresponding one of the plurality of the to-be-connected rebars;
• and
• (g) connecting and securing each of the plurality of rebars of the pre-fabricated reinforcement cage structure to a corresponding one of the plurality of the to-be-connected rebars through the coupler coupled to each of the plurality of rebars of the pre-fabricated reinforcement cage structure.