PILE HEAD PROTECTING DEVICE AND PILE HEAD PROTECTOR IN PILE INSTALLATION BY INNER EXCAVATION

摘要

PROBLEM TO BE SOLVED: To protect a pile head of a hollow pile.;SOLUTION: This pile head protecting device in pile installation by inner excavation attains the purpose by fixing an annular plate with hanging members protrusively provided at an outer peripheral part at equal spaces, to an end plate of the hollow pile, and connecting an insert-fitting cylinder insert-fitted to a soil discharge hopper comprising a cylinder and a ring plate, onto the annular plate.;COPYRIGHT: (C)2001,JPO