| 摘要 |
A construction method of a composite slab bridge using a composite truss girder is provided to prevent various accidents of workers and damage to transit vehicles under a bridge by connecting lower chords of a composite truss girder and forming a closed working space with the lower part of a bridge and to reduce the cost and period of construction by connecting upper chords of an intermediate support using high-strength bolts and continuing composite truss girders structurally by concrete partition walls. A construction method of a composite slab bridge using a composite truss girder(41) comprises the steps of placing a composite truss girder on an abutment or a pier using a crane(42), constructing a floor slab and a concrete partition wall on the remaining part except an intermediate support and constructing a floor slab and a concrete partition wall on the intermediate support, and connecting both upper chords on the intermediate support by attaching gusset plates on the upper and lower parts of the upper chord and tightening with high-strength bolts. Hereon the composite truss girder is formed by manufacturing a concrete lower chord(43) in the two-bowl shape, arranging two-row web members on the concrete lower chord perpendicularly and attaching an upper chord on each web member. |
