REINFORCING STRUCTURE OF FOUNDATION IN EXISTING UNDERWATER STRUCTURE AND ITS REINFORCING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a reinforcing structure of a foundation in an existing underwater structure capable of simply suppressing buoyancy acting on a cofferdam box body, and its reinforcing method.;SOLUTION: The reinforcing structure 1 of the foundation in the existing underwater structure is seated on the bottom so as to surround the foundation 2 of the underwater structure, and a bottom plate 3 of the cofferdam box body adhered to the side of the foundation is fixed by a micro-pile 4 driven to the bottom ground 7 from a driving hole 11 at the upper surface, an additional concrete placing section 5 placed over the upper part of the bottom plate and the upper part of the foundation is formed in a dry space 32 formed by discharging water inside of the temporary cofferdam box body 29, and the body 8 of the cofferdam box body is separated to make the bottom plate 3 as a left-in-place-material.;COPYRIGHT: (C)2007,JPO&INPIT