METHOD FOR REMOVING FLOOR SLAB OF COMPOSITE GIRDER BRIDGE AND REINFORCEMENT MEMBER USED FOR THE SAME

摘要

To provide a method for removing a composite girder bridge floor slab and a reinforcing member used for the method by which a concrete of a floor slab haunch part is removed in advance with a water jet while a road is being served and reinforcing is carried out successively, whereby by a working period after closure is drastically reduced.SOLUTION: A method for removing a floor slab of a composite girder bridge according to the present invention includes a step of removing a predetermined section of concrete of a floor slab haunch part from the side of the floor slab haunch part with a water jet while maintaining the upper surface of the floor slab; a step of installing a reinforcing member in a section from which concrete has been removed; a step of removing a floor slab by removing a reinforcing member after stopping passage on the floor slab, and a step of removing a predetermined section of the concrete and a step of installing a reinforcing member are repeated while changing sections, and the concrete of the floor slab haunch part in the section where the floor slab is removed is removed.SELECTED DRAWING: Figure 5