| 種別 | paper |
| 主題 | Cracking and Ultimate Strength of Externally Prestressed Steel-free Concrete Deck Slabs |
| 副題 | |
| 筆頭著者 | Ammar HASSAN（Akita University） |
| 連名者1 | Makoto KAWAKAMI（Akita University） |
| 連名者2 | Kyoji NIITANI（Oriental Construction Co,） |
| 連名者3 | Ayuko MISE（Oriental Construction Co,） |
| 連名者4 | |
| 連名者5 | |
| キーワード | steel-free slab, unbonded prestressing, high-strength concrete, punching shear, cracking |
| 巻 | 23 |
| 号 | 3 |
| 先頭ページ | 511 |
| 末尾ページ | 516 |
| 年度 | 2001 |
| 要旨 | Punching tests on six full scale steel-free slabs transversely prestressed with unbonded external bars are reported in this paper. The slabs were completely devoid of internal steel in order to avoid the corrosion of internal reinforcement and therefore the early deterioration of the concrete. The influence of the prestressing level and the concrete compressive strength on the structural behavior, punching shear capacity and occurrence of cracks in the slabs was investigated. The results observed show that unbonded prestressing and concrete strength increase the ultimate punching load to some extent but have no considerable effect on increasing the crack occurrence load. Prestressing, however, proved efficiency in controlling cracks development, which means a great improvement on the serviceability of the slab. A review of the steel-free deck slab concept and background is given along with the experimental results. |
| PDFファイル名 | 023-01-3086.pdf |