Impact Testing of Reinforced Concrete Beams Shear-Strengthened with Fiber-Reinforced Polymer Wraps

被引：23
|
作者：
Liu, Tao [1 ]
Kang, Thomas H-K [2 ,3 ]
Nghiem, Andrew [2 ]
Xiao, Yan [4 ,5 ]
机构：
[1] Hunan Univ Sci & Technol, Sch Civil Engn, Xiangtan, Peoples R China
[2] Seoul Natl Univ, Struct Engn, Seoul, South Korea
[3] Seoul Natl Univ, Engn Educ Innovat Ctr, Seoul, South Korea
[4] Zhejiang Univ Univ Illinois Urbana Champaign Inst, Energy Environm & Infrastruct Sci, Hangzhou, Peoples R China
[5] Univ Southern Calif, Los Angeles, CA 90007 USA
来源：
ACI STRUCTURAL JOURNAL | 2020年 / 117卷 / 03期
基金：
新加坡国家研究基金会;
关键词：
carbon fiber-reinforced polymer (CFRP); drop-weight test; dynamic response; impact loading; reinforced concrete beam; strengthening; FRP; BEHAVIOR;
D O I：
10.14359/51723497
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The dynamic behavior of reinforced concrete (RC) beams shear-strengthened with externally bonded carbon fiber-rein forced polymer (CFRP) wraps under low-velocity impact loading was experimentally investigated. Twelve simply supported RC beam specimens classified into two groups according to stirrup ratios of 0 and 0.1% were tested using an instrumented drop-weight impact machine. The main variable was the center-to-center spacing of the CFRP wraps, which was retrofit at three levels from light, to critical, and to heavy strengthening. The dynamic responses of all the specimens are monied and discussed in detail. Effects of the CFRP strip spacing and shear span-depth ratio on dynamic response of beam specimens are analyzed.
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页码：297 / 310
页数：14
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