| 摘要 |
PURPOSE:To shorten the period of construction work by a method in which a recessed coupling portion is provided on the inner walls of an underground structure, a bottom board is horizontally set on the inside lower part of the walls, couplers are protruded toward the bottom board side and coupled with the coupling portion, and a hardening agent is placed on the lower part. CONSTITUTION:An angular or cylindrical underground wall 1 is constructed on the ground's surface and settled into the ground while excavating the ground. Recessed coupling portions 2 are provided in mutually facing manner on the lower part of the wall 1. A PC concrete bottom board 3 is placed horizontally on the inside lower part of the wall 1, and a turnable coupler 4 is housed in a housing 5 provided on the side of the bottom board 3 and connected with the coupling portions 2 by bolts 6 of H-shaped steel. Concrete mixed with a miscible liquid capable of hardening the concrete even in water is placed on the lower part of the wall 1. The scale of the processings can thus be made smaller and the hardening agent 8 can be quickly cured. |
