STRUCTURE AND CONSTRUCTION METHOD OF PREFABRICATE TUNNE BELL MOUTH

摘要

The present invention relates to a method for constructing a fabricated tunnel bell mouth and, more specifically, to a method for constructing a fabricated tunnel bell mouth capable of simply constructing a bell mouth by moving a concrete cell to a construction site and assembling the concrete cell one by one, wherein a concrete cell is formed by separating, into a size to be transported from a factory measured by a three-dimensional measurement, the bell mouth which is installed from an entrance that a vehicle or a train enters toward an expanded space on the exit. The method for constructing a bell mouth of the present invention includes: a step of forming a concrete cell (20) by separating, into several parts to fit in a site, a bell mouth (10) which is constructed in an entrance and an exit in order to remarkably decrease pressure wave by dispersing wind pressure generated when a vehicle or a train rapidly passes through a tunnel; a step of constructing a expansion mortar on an upper surface of a lower concrete cell constructed by moving the concrete cell to a tunnel site; a step of stacking and coupling concrete cells by inserting a protrusion of the upper concrete cell into the upper insertion groove of the lower concrete cell; a step of constructing the bell mouth to be integrated with lining concrete constructed on a rear side of a connection part formed on a rear surface of the concrete cell; and a step of constructing silicone in a V groove formed in an edge part in upper and lower parts of the front of the stacked concrete cell.