HOLLOW CORE SLAB STRUCTURE USING AIR BALLON AND CONSTRUCTION METHOD THEREOF

摘要

PURPOSE: A void slab using a balloon fixed on a truss girder of a reinforced truss type deck plate and a construction method thereof are provided to easily install a void slab on a truss girder of a reinforced truss type deck plate by minimizing the number of components in a construction field. CONSTITUTION: A void slab using a balloon fixed on a truss girder of a reinforced truss type deck plate comprises a deck plate(D), a horizontal bar, a pair of vertical bars, a plurality of balloons, and a slab concrete. A plurality of truss girders is formed in plural rows on the upper part of a plate(D20) so that the deck plate is composed. The horizontal bar is installed by dividing into an upper horizontal bar and lower horizontal bar between the truss girders of the plural rows. One end of the vertical bar is joined to the upper part of the deck plate and middle and end parts are respectively joined to the upper and lower horizontal bars. The balloon is inserted into a balloon installing space formed by the upper and lower horizontal bars and two vertical bars. The upper part of the balloon is installed underneath the upper part of the truss girder. An injection hole(B1) is formed in one end of the balloon so that air or foaming molding materials are injected into inside the balloon.