[1]王新玲,范建伟,王华..碳纤维布加固混凝土框架在竖向荷载下的试验研究[J].郑州大学学报(工学版),2006,27(04):14-17.[doi:10.3969/j.issn.1671-6833.2006.04.004]
　WANG Xinling,FAN Jianwei,Wang Hua.Experimental study of carbon fiber cloth reinforced concrete frame under vertical load [J].Journal of Zhengzhou University (Engineering Science),2006,27(04):14-17.[doi:10.3969/j.issn.1671-6833.2006.04.004]
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碳纤维布加固混凝土框架在竖向荷载下的试验研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
27卷
期数:
2006年04期
页码:
14-17
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Experimental study of carbon fiber cloth reinforced concrete frame under vertical load

作者:
王新玲; 范建伟; 王华.
郑州大学土木工程学院,河南,郑州,450001, 郑州大学土木工程学院,河南,郑州,450001, 郑州大学土木工程学院,河南,郑州,450001
Author(s):
WANG Xinling; FAN Jianwei; Wang Hua
关键词:
碳纤维布;  框架结构;  加固;  裂缝;  承载力
Keywords:
DOI:
10.3969/j.issn.1671-6833.2006.04.004
文献标志码:
A
摘要:
为研究碳纤维布加固方式对框架结构性能的影响,按1∶3缩尺模型设计了用碳纤维布加固损伤钢筋混凝土框架结构的试验试件,进行了竖向荷载作用下的试验研究分析.试验结果表明,对损伤混凝土结构较大裂缝进行灌胶密闭和粘贴间距较小的U型箍能够有效抑制裂缝开展;梁底粘贴碳纤维布在粘结锚固满足的情况下,不仅能够有效延缓钢筋的屈服,而且可以大幅度提高梁的极限抗弯承载力.由于碳纤维布的约束作用,加固后梁的截面抗弯刚度有所提高.碳纤维布加固后的梁的拉力由钢筋和碳纤维布共同承担,钢筋屈服后碳纤维布的作用明显增大,承担其主要拉力,为防止碳纤维布突然拉断,需考虑其有效利用率问题.
Abstract:
In order to study the influence of carbon fiber cloth reinforcement on the performance of frame structure, the test specimen of reinforced concrete frame structure reinforced with carbon fiber cloth was designed according to the 1∶3 scale model, and the experimental research analysis under vertical load was carried out. The test results show that the U-hoop with large cracks damaged concrete structure and small pasting spacing can effectively inhibit the crack development. Pasting carbon fiber cloth at the bottom of the beam can not only effectively delay the yield of the steel bar but also greatly improve the ultimate bending bearing capacity of the beam under the condition that the bonding anchorage is satisfied. Due to the restraining effect of carbon fiber cloth, the sectional bending stiffness of the reinforced rear beam is improved. The tensile force of the beam after the reinforcement of the carbon fiber cloth is borne by the steel bar and the carbon fiber cloth, the role of the carbon fiber cloth after the yield of the steel bar is significantly increased, and the main tensile force is borne by bearing, in order to prevent the carbon fiber cloth from suddenly pulling off, it is necessary to consider its effective utilization rate.

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更新日期/Last Update: 1900-01-01