DAM CORRIDOR CONSTRUCTION METHOD, CORRIDOR CELL OF DAM CORRIDOR, AND FORMWORK USED FOR MANUFACTURING CORRIDOR CELL

摘要

PROBLEM TO BE SOLVED: To provide a technique for further improving concrete charging property into a bottom face lower part of a corridor cell.;SOLUTION: A dam corridor construction method comprises: a cradle installation process for installing a cradle on which a precast corridor cell which is a corridor cell of the dam corridor and has multiple holes formed on its bottom face, is laid on a levee body concrete of a prior lift; a corridor cell installation process for laying the corridor cell on the cradle; and a concrete placement process for embedding the corridor cell by placing concrete in a cavity at the bottom face lower part of the corridor cell laid on the cradle, the periphery of the bottom face lower part of the corridor cell and the periphery of the corridor cell. In the concrete placement process, the concrete is placed in the cavity in the bottom face lower part of the corridor cell while checking a charging state from the multiple holes.;SELECTED DRAWING: Figure 7;COPYRIGHT: (C)2017,JPO&INPIT