期刊
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
卷 34, 期 10, 页码 782-794出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0731684415580330
关键词
Cross-sectional aspect ratio; the number of basalt fiber-reinforced polymer layers; short columns; axial compression behavior
资金
- Program for Liaoning Excellent Talents in University [LR2012020]
- National Natural Science Foundation of China [11302093]
In order to study the axial compression behavior of rectangular concrete short columns that have been strengthened with basalt fiber-reinforced polymer sheets, the axial compression test were conducted on 15 groups specimens. The parameters are the cross aspect ratio and the number of basalt fiber-reinforced polymer layers. As the aspect ratio increases, the confined effect of basalt fiber-reinforced polymer decreases. The strength of one ply of basalt fiber-reinforced polymer decreases as the aspect ratio increases, the range is not very obvious, but the two ply of basalt fiber-reinforced polymer has the obvious decreasing tendency. With the increase in aspect ratio, the square and rectangular section columns of basalt fiber-reinforced polymer confined have a certain size effect. When the aspect ratio is 1.0, the values of f(cc)/f(c0) by one ply of basalt fiber-reinforced polymer and two ply of basalt fiber-reinforced polymer are 1.14 and 1.50, respectively. And when the ratio is 2.0, the values of f(cc)/f(c0) are 1.06 and 1.16. The confined effect is best when the aspect ratio is 1.0, while there is no significant effect with the ratio of 2.0. Results of the theoretical analysis compared with the experimental results show good agreement.
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