JPH0510448B

PURPOSE:To improve the precision of the execution of work, by injecting and hardening group between a framework and a slot wall, after substance for the concrete framework formed and hardened in order by cylindrical molding boxes arranged on ground is put in a slot and the whole framework is set. CONSTITUTION:An excavated slot 1 is formed, and on the upper section, a casing 2 is set, and on the periphery, temporary ground concrete 3 is cast. After that, on the upper section of the slot 1, a working trestle 4 is set, and a reinforced concrete framework 6 is made to float on liquid mud 7 in the slot 1, and the bottom section is temporarily fixed to the trestle 4 and reinforcing bars 9 are applied, and molding boxes 10 are erected, and the concrete jointing of successive pours is executed. The framework 6 is sunken to a specified level and is temporarily fixed to the trestle 4, and after that, the same works are repeated, and the framework 6 on the specified level is set in the slot 1, and a space between the framework 6 and a slot wall is back-filled with group 12 up to the upper section to complete the work. As a result, a construction term is shortened, and the cost can be saved.