The present invention relates to a connecting bracket assembly for laterally joining a plurality of connecting brackets for assembling buoyancy tubes and scaffolding to build a base of mooring structures such as a breakwater-proof cage or a ship's eyepiece. More specifically, by installing a wedge-type clamp on the connection portion provided by facing the connection bracket in the lateral direction, and the clamp is firmly bound to the connection portion by bolts and nuts, the assembling means of the male and female form on the connection bracket itself Compared to the case provided in the present invention, it is possible to prevent product breakage during assembly, to easily detach and detach the assembly, to reduce the mold cost required for injection molding of the connecting bracket, to use the connecting bracket alone and to connect to the assembly. Provides a compatible assembly that can be used for both, and frame of connecting bracket Mooring structure connecting brackets can be easily and precisely installed and quickly maintained on mooring structures as well as on land by the wedge-type assembly assembled on the floor. To an assembly. To this end, the present invention is a mooring structure by engaging a plurality of connecting brackets 10, 10 'provided with a tube ring 12 for the buoyancy tube 5 in the lower or inside the support frame of the rectangular frame shape laterally ( In the connecting bracket assembly for constructing the base of 1), the connecting bracket assembly is an assembly clamp (19) that is installed by fitting to the connection portion to which the side frames of each of the connecting brackets (10, 10 '). And a fastening bolt 18 and a nut 18a for fastening the assembly clamp 19 integrally with the side frame, and the assembly clamp 19 includes two side frames joined together to form a connection portion. A crosswise cross in which the "c" shaped vertical clamp 20 into which the part is inserted inward and the "c" shaped horizontal