| 摘要 |
A multi-span continuous bridge using a prestressed concrete girder and the construction method thereof are provided to balance the moment between the central part of a span and a continuous support and to reduce the girder height using structural efficiency for extending the cross section of a continuous support, thereby to reduce the amount of materials used such as concrete reinforcing bars, etc. and to improve economical efficiency, and to make a superstructure lightweight and to promote the size reduction of a substructure. A multi-span continuous bridge using a prestressed concrete(PSC) girder is formed by continuing a plurality prestressed concrete girders with a plurality of spans, wherein the PSC girder is composed of a single-sided board(12) having an end located in a continuous support to have the larger width than the width of a web, a through hole is formed in the single-sided board to penetrate when the ends of the adjacent PSC girders face with each other in the bridge axis direction, a cross beam is installed between the PSC girders in the perpendicular direction to the bridge axis in the middle of the span and the continuous support while the PSC girder is placed between the support, the ends of the adjacent PSC girders are connected to each other by inserting a steel bar to the through hole formed on the ends of the adjacent PSC girders and anchoring at the continuous support, and an end cross beam is installed to the outer end of the PSC girders adjoining each other in the perpendicular direction to the bridge axis, and concrete is placed to make the end cross beam buried, thereby to form a bridge deck. |
