FORMWORK COMPRISING MULTIPLE CYLINDRICAL MATERIALS, BASE CONCRETE, AND CONSTRUCTION METHOD OF PILE FOUNDATION

摘要

PROBLEM TO BE SOLVED: To provide a formwork comprising a plurality of cylindrical materials, with which base concrete in a planar shape close to a rectangle can be constructed.;SOLUTION: A part of respective peripheral walls 11 of two cylindrical materials 10 is notched in the range of a center angle θ=60° to 120°, and in the state of joining openings 12 formed by the notch with each other, the peripheral walls 11 of the cylindrical materials 11 are connected to each other by connection ribs 13 provided on both side edges of the openings 12, and the connection ribs 13 that are positioned at both side edges of the openings 12 and face each other are connected by a tension bar 20 crossing the openings 12.;COPYRIGHT: (C)2014,JPO&INPIT