Study on design formula of shear capacity of RC beams reinforced by CFRP grid with PCM shotcrete method

被引：33
作者：
Guo, Rui [1 ,2 ]
Pan, Yi [1 ,3 ]
Cai, Lianheng [1 ]
Hino, Shinichi [2 ]
机构：
[1] Southwest Jiaotong Univ, Sch Civil Engn, Dept Bldg Engn, Chengdu 610031, Sichuan, Peoples R China
[2] Kyushu Univ, Dept Civil Engn, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan
[3] Southwest Jiaotong Univ, Minist Educ, Key Lab High Speed Railway Engn, Chengdu 610031, Sichuan, Peoples R China
来源：
ENGINEERING STRUCTURES | 2018年 / 166卷
基金：
中国国家自然科学基金;
关键词：
CFRP gird; PCM shotcrete; Shear strengthening; Evaluation method; Finite element analysis; COMPRESSIVE BEHAVIOR; FRP; CONCRETE; COMPOSITE; TRM;
D O I：
10.1016/j.engstruct.2018.03.095
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The objective of this study was to evaluate the shear capacity of reinforced concrete (RC) beams by using carbon fiber-reinforced-polymer (CFRP) grid with polymer-cement-mortar (PCM) shotcrete. A new evaluation method of shear capacity based on the concept of effective strain of CFRP grid was proposed by RC beam tests, which were carried out with the reinforced arrangement of CFRP grid as parameters. In order to make this new evaluation method more applicable, we conducted a 3-dimensional finite-element (FE) analysis by incorporating factors such as the influences from shear span ratio of RC beams. Our results suggested that the proposed evaluation method by considering both vertical and horizontal grid was highly effective, and that the share ratios of shear capacity between vertical and horizontal grid presented a nonlinear relationship according to the shear span of RC beams.
引用
收藏
页码：427 / 440
页数：14
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