| 摘要 |
PURPOSE: A reinforcing method for a negative moment area of a bridge is provided to reduce the deflection and crack of a bridge and to extend the life of a bridge by preventing corrosion of an abutment and a bridge seat. CONSTITUTION: The reinforcing method for a negative moment area of a bridge comprises the steps of: chipping the upper part of a slab where a floor slab is connected to have the appointed depth; installing many anchor grooves(6) to the chipped slab; removing dust on the surface of the slab provided with the anchor grooves(6) by an air compressor; installing an anchor bolt(7) to the anchor groove(6), then fixing by injecting epoxy; arranging reinforcing bars and fasteners(10) by hanging an anchor bolt(7) in the moving direction of vehicles; arranging reinforcing bars(9) in the intersecting direction of the reinforcing bars and the fasteners(10); removing dust on the slab surface by an air compressor; applying adhesives on the surface of the chipped slab(20) to adhere new, old concrete; placing concrete by leaving a space(19) to apply heat to the fastener(10); heating up the fastener(10) exposed to both sides of the dried concrete by electricity; fastening the expanded fastener(10), then anchoring to the concrete; cooling and shrinking the fastener(10) by isolating electricity; and placing polymer concrete or epoxy concrete to the space(19).
|
