JP2991115B

PROBLEM TO BE SOLVED: To facilitate the execution of works in a short period by piling up a plurality of form cages in an arched shape while being mutually connected, filling the insides of the form cages and the outsides of the form cages with soil cement and constituting a reinforced soil ring and filling the periphery of the reinforced soil ring with general soil and sand. SOLUTION: A plurality of form cages 1 are heaped up in an arched shape while being mutually coupled, and the inner mold of both side wall sections of a reinforced soil ring 3A is manufactured. Form cages 2 are stretched among the mutual both side wall sections of the reinforced soil ring 3A. The insides and outsides of the form cages 1 and the form cages 2 are filled with soil cement 3, thus constructing the reinforced soil ring 3A. The periphery of the reinforced soil ring 3A is filled with general soil and sand 4, and a road is built on the general soil and sand 4. Accordingly, since each and outsides of the form cages are only filled with soil cement and rolling is not required particularly, the execution of works can be carried out extremely simply in a short period.