WORK CONSTRUCTION FOR CAST-IN-PLACE REINFORCED CONCRETE PILE CAPABLE OF EASILY REMOVING SHRINKAGE ALLOWANCE FOR CONCRETE

摘要

PROBLEM TO BE SOLVED: To provide a work construction for cast-in-place reinforced concrete pile which can be easily used for one's own convenience such as easy removal of shrinkage allowance for concrete.;SOLUTION: A circular ring-shaped cutoff plate 3 formed at the center of a through hole 4 is fixed to the upper inner periphery of a steel bar cage 0 formed cylindrically by combining together many straight line-shaped main bars and ring-shaped hoops 2, by this cutoff plate, a cylindrical cover 21 formed by a foamed synthetic resin sheet is covered by the cutoff plate, a large diameter cylinder 10 and a small diameter cylinder 11 made of thick paper are concentrically arranged on the cutoff plate, a lid plate 14 for closing a gap is covered to the upper end of a large diameter cylinder and a small diameter cylinder, further, a foamed synthetic resin plate 20 is interposed between the outer peripheral surface of the large diameter cylinder and the main bar of a steel bar cage, a tremie pipe 31 is inserted to the small diameter cylinder and concrete is placed.;COPYRIGHT: (C)2003,JPO