A caisson block construction method, the method comprising:
- manufacturing a plurality of bottom caisson blocks having a plurality of first unit compartments disposed consecutively in a horizontal direction, each of the first unit compartments being classified into a first unit compartment for rubble and having an open upper part and a closed lower part and a first unit compartment for concrete, wherein an upper part of the first unit compartment for concrete is open;
- manufacturing a plurality of upper caisson blocks having a plurality of second unit compartments, each of the second unit compartments being disposed consecutively in the horizontal direction and having open upper and open lower parts;
- forming a bottom caisson block structure by installing the plurality of bottom caisson blocks side by side in the horizontal direction;
- installing the plurality of upper caisson blocks above the installed bottom caisson blocks, by installing the upper caisson blocks such that each of the upper caisson blocks is horizontally offset from the bottom caisson block or the upper caisson block which is installed below the upper caisson block to be installed, and each of the second unit compartments of the upper caisson block is disposed directly above the first unit compartment of the bottom caisson block or the second unit compartment of the upper caisson block which is installed below the upper caisson block to be installed;
- filling with rubble the second unit compartment of the upper caisson block positioned above the first unit compartment for rubble and exposed upward, so that the rubble fills vertically from the first unit compartment for rubble to the second unit compartment of the upper caisson block exposed upward, after the upper caisson blocks are installed;
- inserting a vertical reinforcing bar module after the upper caisson blocks are installed, by inserting the vertical reinforcing bar module being which is formed vertically and covered by a waterproof membrane on lower and side parts thereof into the upper part of the second unit compartment of the upper caisson block, which is positioned above the first unit compartment for concrete and exposed upward, so that the vertical reinforcing bar module is positioned inside the first unit compartment for concrete and at least one second unit compartment disposed consecutively;
- and
- forming a vertical concrete column for joining by casting concrete into the upper part of the second unit compartment in which the vertical reinforcing bar module is inserted, so that the vertical concrete column for joining is formed consecutively along the first unit compartment for concrete and at least one second unit compartment disposed consecutively.