CONSTRUCTION METHOD FOR DEEP FOUNDATION PILE

摘要

PROBLEM TO BE SOLVED: To integrate a deep foundation pile and the ground and to allow shearing resistance to be considered by cylindrically arranging liner plates each bored with multiple holes on a plate-like section and provided with multiple dowel bars on the surface and back of the plate-like section, evacuating the ground while applying earth retention, and placing concrete to form the deep foundation pile. ;SOLUTION: Mesh bars are arranged into a curved plate shape, and flanges are provided on and beneath the mesh bars to form a liner plate 1. When a hard rock 15 is excavated after sediment 13 and a soft rock, a liner plate on the uppermost stage 1a is suspended, the uppermost liner plates 1a are connected downward in sequence as excavation progresses, and the liner plates 1 are connected at the portion of a hard rock 15 where the peeling off of a small quantity of rock is merely needed to be prevented and the earth pressure is not required to be considered. The concrete placed in the liner plates 1 after the completion of excavation flows out to the outside from the mesh bars and flows between the hard rock 15 and the liner plates 1, and a deep foundation pile and the hard rock 15 are integrated, thereby the shearing resistance on the side face of the deep foundation pile can be considered.;COPYRIGHT: (C)1999,JPO