| 摘要 |
PROBLEM TO BE SOLVED: To improve safety by fixing a reinforcing sheet having specific tensile strength and a specific reinforcing fiber quantity to the end section of tension material or the covered surface of the end section. SOLUTION: A reinforcing sheet 16 is fixed to the base cover 12 of a prestressed concrete structure 1 and the surface of a lateral girder cover section 14, and the end section of a tension material 7 made of a PC steel product is covered. When the tension material 7 is ruptured, the sheet 16 prevents the tension material 7 from being protruded to the outside and prevents the fragments of the base cover 12, from being scattered. An auxiliary steel sheet is fixed to the prescribed surface as required, and the sheet 116 is fixed on it. Reinforcing fibers are made of glass fibers, carbon fibers, or organic fibers, the tensile strength is set to 100-1000kg/mm<2> , the reinforcing fiber quantity is set to 100-600g/m<2> , the thickness of the auxiliary steel sheet is set to 0.1-10mm for welding and to 1-15mm for fastening by bolts. The rupture of the tension material 7 can be detected from the outside and surely repaired. |
