CORE MATERIAL STRUCTURE OF BAR-SHAPED REINFORCING BODY AND CONSTRUCTION METHOD OF BAR-SHAPED REINFORCING BODY USING THIS CORE MATERIAL STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a core material structure and a construction method of a bar-shaped reinforcing body, capable of providing the excellent anchor effect as a core material of the bar-shaped reinforcing body, and excellently constructing soil cement of a predetermined diameter by agitating and mixing excavation earth and a solidification material by the core material structure, while being disposable by being left as it is as the core material of the bar-shaped reinforcing body by the core material structure of a relatively simple structure, in the bar-shaped reinforcing body of a cut surface and a slope face.;SOLUTION: A bit 3 is arranged on the tip of a hollow rod 2. A blade part 4 for expanding a blade at an inclination θ (30° to 60°) toward the rod tip is fixed, and is arranging in a position for striking fluid jetted from an jetting port 5 on the blade part 4 on a rod outer peripheral surface of the bit 3. The rod is rotatably advanced for boring by jetting a solidification material liquid from the jetting port 5, and expanding excavation by a drilled hole by the bit and the fluid and mixing of excavation sediment and the solidification material liquid, are simultaneously performed. The excavation sediment and the solidification material liquid are further agitated and mixed by the blade part, and after forming a bar-shaped ground improving body up to a desired position, the core material structure is left as it is in the ground improving body, and the bar-shaped reinforcing body is constructed.;COPYRIGHT: (C)2006,JPO&NCIPI