原文传递
Shear capacity of dry-cast extruded precast, prestressed concrete hollow-core slabs
| 题名： | Shear capacity of dry-cast extruded precast, prestressed concrete hollow-core slabs |
| 正文语种： | 英文 |
| 作者： | Karl A. Truderung, Amr El-Ragaby, Mohamed Mady, and Ehab El-Salakawy |
| 关键词： | Bearing length; hollow-core slab; prestressing level; shear capacity; transfer length |
| 摘要： | Precast, prestressed concrete hollow-core slabs offer an economical solution where large spans dictate the design. There are currently multiple code methodologies for shear design; however, only the European standard EN 1168 addresses web-shear design specifically for prestressed hollow-core slabs. This paper presents the experimental results of eight 305 mm (12 in.) deep precast, prestressed concrete hollow-core slabs tested until failure to evaluate their shear capacity against the shear predictions in the Canadian standard CSA A23.3- 14, ACI 318-14, and EN 1168. The results showed that EN 1168 was the most accurate predictor of the web-shear capacity of the precast, prestressed concrete hollow-core slabs for the range of tested variables, including the amount of prestressing and different support bearing lengths, with an average experimental-to-predicted capacity of 0.96. The test results and comparisons emphasized the need to introduce a specific equation for evaluating the elastic web-shear capacity of precast, prestressed concrete hollow-core members into the upcoming edition of CSA A23.3. |
| 出版年： | 2019 |
| 期刊名称： | PCI-Prestressed Concrete Institute Journal |
| 期： | 4 |
| 页码： | 71-83 |
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