Shear capacity of dry cast extruded precast, prestressed concrete hollow core slabs

被引：0
|
作者：
Truderung, Karl A. [1 ,2 ,3 ]
El-Ragaby, Amr [4 ]
Mady, Mohamed [5 ,6 ]
El-Salakawy, Ehab [7 ]
机构：
[1] Tower Engn Grp, Winnipeg, MB, Canada
[2] Canadian Precast Prestressed Concrete Inst Tech C, Edmonton, AB, Canada
[3] CSA A23 3 Tech Comm Reinforced Concrete Design, Edmonton, AB, Canada
[4] Univ Wisconsin Platteville, Dept Civil & Environm Engn, Platteville, WI USA
[5] Cairo Univ, Dept Struct Engn, Cairo, Egypt
[6] Publ Works City Winnipeg, Engn Div, Winnipeg, MB, Canada
[7] Univ Manitoba, Dept Civil Engn, Winnipeg, MB, Canada
来源：
PCI JOURNAL | 2019年 / 64卷 / 04期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Bearing length; hollow-core slab; prestressing level; shear capacity; transfer length; STRENGTH;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Precast, prestressed concrete hollow-core slabs offer an economical solution where large spans dictate the design. There are currently multiple code methodologies fair 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.
引用
收藏
页码：71 / 83
页数：13
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