Reinforcement performance improvement methods and reinforcement performance enhancement structure of the slab

摘要

PROBLEM TO BE SOLVED: To provide a strengthening performance improvement method and a strengthening performance improvement structure for a floor slab capable of improving shear capacity so as not to cause a shear fracture before the occurence of flexural fracture, so that a flexural reinforcement effect is exhibited and a flexural strength can be improved.;SOLUTION: A floor slab 1 is provided with a floor slab body 10, a thickening portion 20 provided below the floor slab body 10, and a reinforcement material 30. The plurality of reinforcement materials 30 are nearly vertically provided from the lower end surface of the thickening portion 20 to immediately below a floor slab upper reinforcement 13. Each of the reinforcement materials 30 is provided in a hole 16 formed in the floor slab body 10 and the thickening portion 20 and the circumference thereof is covered with a quick-curing filler 17. Because the quick-curing filler 17 is in close contact with the circumference of the reinforcement material 30, the reinforcement material 30 is firmly fixed to the floor slab body 10 and the thickening portion 20.;COPYRIGHT: (C)2012,JPO&INPIT