STRESS RIBBON BRIDGES CARBON FIBER PLATE AND FRP DECK, AND CONSTRUCTION METHOD THEREOF

摘要

A stress ribbon bridge using a vertical fiberboard and a precast composite fiber reinforced plastic deck is provided to construct a bridge economically and to extend the span length of a bridge by reducing the dead weight of a bridge deck and the horizontal tensile force required for bridge construction. A stress ribbon bridge(1) using a vertical fiberboard and a precast composite fiber reinforced plastic deck includes abutments(10) installed on two ends of the bridge, plural precast composite fiber reinforced plastic decks(20) placed and assembled between the abutments, two or more strap type vertical suspension fiberboards(30) installed between the abutments in the longitudinal direction of the bridge to support the bottom of the precast composite fiber reinforced plastic decks, and a prestress fiberboard(40) placed through the precast composite fiber reinforced plastic deck in the longitudinal direction of the bridge and tensed/anchored to apply tensile force on the precast composite fiber reinforced plastic deck. In addition, a curved projection is formed on a part where the precast composite fiber reinforced plastic deck and the suspension fiberboard are in contact to prevent the sudden change in curvature, thereby to prevent local stress concentration, and a low friction material such as Teflon is placed on a part where the precast composite fiber reinforced plastic deck and the suspension fiberboard are in contact or coated on the projection to minimize frictional stress between the precast composite fiber reinforced plastic deck and the suspension fiberboard.