- A MODEL FOR STRESS-STRAIN RELATION OF PRESTRESSING STEELS UNDER CYCLIC LOAD
- PC コウザイ ノ クリカエシ オウリョク ヒズミ カンケイ モデル
Stress-strain relations of prestressing steels under cyclic loading is essential information to predict load-deformation relations of prestressed concrete flexural members. In this paper, the cyclic stress-strain models for PC steels using Menegotto-Pinto expression with variable of strain are proposed based on experimental results of induction heating quenched and tempered PC bars of φ 36mm. The models estimate satisfactorily hysteretic curve of PC strand, stretched and low temperature annealed (blueing) PC bars and induction heating quenched and tempered PC bars of different strength and size under various type of cyclic loading, such as gradual increase strain cyclic loadings, random cyclic loadings etc..
日本建築学会構造系論文集 66 (550), 7-14, 2001