TRUSS PANEL GIRDER AND PRECAST TRUSS PANEL

PROBLEM TO BE SOLVED: To provide a truss panel girder which is available as a girder member of a bridge, a slab, etc., achieves thinning and lightweight of the girder member while ensuring necessary strength as the girder member, drastically improves construction efficiency, and contributes to shortening of a construction period and cost reduction, and to provide a precast truss panel. SOLUTION: A panel constituting a web 1 of a box girder bridge or the like is formed of the truss-shaped precast truss panel 10 consisting of a frame 11 made of high-strength concrete A in the class of 150 N/mm2, and diagonal members 12. If necessary, the truss member to which a tensile force is applied, is reinforced by prestressing the same according to a pretension system or the like by using a prestressing steel 13. Then the panels 10 thus formed are connected together by mechanical shearing keys 14 or the like, and prestress is introduced to the panels in a bridge axial direction according to a post-tension system to unitarily connect the panels together as a truss panel web 1, followed by constructing an upper floor slab 2 by placing cast-in-place concrete on the truss panel web, to thereby construct the main girder. COPYRIGHT: (C)2006,JPO&NCIPI