Patent ID: 11933011
Assignee: YUJOO CO., LTD.
Field: Civil engineering (Other fields)
Classification: CPC E  Y | IPC E

Claim 0:
1. A construction method for an underwater concrete block structure, the construction method comprising:
a concrete block fabricating step of fabricating a plurality of concrete blocks having a vertical hole extending vertically;
a foundation concrete block structure formation step of forming a foundation concrete block structure by installing the concrete block on the underwater ground after the concrete block fabricating step;
a guide pole installation step of installing a guide pole which comprises a guide pipe having a shape of a pipe extending vertically and an upper insertion guide coupled detachably to an upper part of the guide pipe and having a shape tapered upward, by inserting and installing a lower end part of the guide pole into the vertical hole of the concrete blocks of the foundation concrete block structure after the foundation concrete block structure formation step;
a concrete block stack formation step of forming a concrete block stack by repeating a process of positioning the vertical hole of the concrete block to be installed above the guide pole above the water surface and lowering the concrete block to be installed so that the concrete block to be installed is installed on an upper portion of the foundation concrete block structure in a state in which the guide pole is inserted into the vertical hole of the concrete block to be installed after the guide pole installation step;
an upper insertion guide removal step of removing the upper insertion guide of the guide pole after the concrete block stack formation step;
and a concrete column formation step of forming a concrete column extending vertically in a continuous hole which is a vertically continuous space defined by the vertical holes of the concrete blocks stacked vertically on each other by inserting a concrete column forming set into the guide pipe, wherein the concrete column forming set comprises a metal reinforcing member extending vertically and a waterproof membrane wrapping lower and lateral sides of the metal reinforcing member and fresh concrete poured into the waterproof membrane, removing the guide pipe upward, and curing the fresh concrete while the waterproof membrane is in close contact with the concrete block stack by pressure of the fresh concrete after the upper insertion guide removal step.