Shear strength of steel-fiber-reinforced deep hollow-core slabs

被引：0
|
作者：
Simasathien, Sanputt [1 ]
Chao, Shih-Ho [1 ]
机构：
[1] Univ Texas Arlington, Dept Civil Engn, Arlington, TX 76019 USA
来源：
PCI JOURNAL | 2015年
关键词：
Hollow-core; shear strength; steel-fiber-reinforced concrete; CONCRETE; UNITS;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
ACI 318-14 permits no shear reinforcement in prestressed concrete hollow-core units less than 12.5 in. (320 mm) deep. However, due to the difficulty of placing shear reinforcement in hollow-core slabs, the only effective practice is to increase the depth of the section when shear demand exceeds calculated capacity. One promising method of protecting concrete members from brittle shear failure is the use of steel-fiber-reinforced concrete. An investigation of 18 in. (460 mm) deep steel-fiber-reinforced hollow-core slabs showed that ultimate shear strengths were approximately twice those predicted by ACI 318-14. Steel-fiber-reinforced concrete is more efficient in hollow-core slabs than in typical beams due to a preferential fiber orientation in thin webs that enhance fiber bridging efficiency.
引用
收藏
页码：85 / 101
页数：17
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