| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite PC steel material, which has the consumption capacity of the energy of an earthquake, is difficult to break and can be replaced even by a damage and can be used even by a precast construction method and a post-tension construction, its fixture and a prestressed concrete member. SOLUTION: The composite PC steel material has an unbonded PC steel material 10, in which the outer peripheries of the PC steel materials (PC steel stranded wires 11) are covered with a sheath 12, and low-strength steel materials 20 having strength lower than the PC steel materials and being intertwisted on the outer peripheries of the unbonded PC steel materials 10. Such composite PC steel materials are fixed by a male cone 50 gripping the PC steel materials and a female cone 60 holding the low-strength steel materials 20 between the outer periphery of the male cone 50 and the female cone 60. COPYRIGHT: (C)2004,JPO
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