[1]孔琴,刘立新..碳纤维布加固钢筋混凝土梁受弯性能的试验研究[J].郑州大学学报(工学版),2004,25(04):24-28.[doi:10.3969/j.issn.1671-6833.2004.04.007]
　KONG Qin,Liu Lixin.Experimental study on bending performance of reinforced concrete beams reinforced with carbon fiber cloth[J].Journal of Zhengzhou University (Engineering Science),2004,25(04):24-28.[doi:10.3969/j.issn.1671-6833.2004.04.007]

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碳纤维布加固钢筋混凝土梁受弯性能的试验研究()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

25卷

期数:

2004年04期

页码:

24-28

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Experimental study on bending performance of reinforced concrete beams reinforced with carbon fiber cloth

作者:

孔琴; 刘立新.

郑州大学土木工程学院,河南,郑州,450002, 郑州大学土木工程学院,河南,郑州,450002

Author(s):

KONG Qin; Liu Lixin

关键词:

碳纤维布;  受弯梁;  加固;  承载力;  刚度;  延性;  裂缝

Keywords:

carbon fiber cloth;  bending beams;  reinforcement;  bearing capacity;  stiffness;  ductility;  Cracks

DOI:

10.3969/j.issn.1671-6833.2004.04.007

文献标志码:

A

摘要:

为研究碳纤维加固方式对梁性能的影响,通过对比未加固的钢筋混凝土梁,设计了开裂与未开裂两种不同状态的钢筋混凝土梁采用碳纤维布加固后的受弯试验.在初始状态钢筋未屈服的情况下,无论加固前梁是否开梁,梁的主要破坏特征均为碳纤维布在跨中断裂;在保证粘贴良好的情况下,两种加固梁的屈服荷载、极限荷载均得到相同程度的提高;梁底粘贴碳纤维布可以有效限制裂缝的发展和延伸,因而加固后的梁的延性及刚度均得到改善;钢筋屈服后,荷载主要由碳纤维布承担,但其强度只能发挥60%左右.

Abstract:

In order to study the influence of carbon fiber reinforcement on beam performance, by comparing the unreinforced concrete beams, the bending test of reinforced concrete beams in two different states of cracked and uncracked reinforced concrete beams reinforced with carbon fiber cloth was designed. In the case of the initial state of the steel bar is not yielded, regardless of whether the reinforced front beam is open or not, the main failure feature of the beam is that the carbon fiber cloth is broken in the span; Under the condition of ensuring good adhesion, the yield load and ultimate load of the two reinforcement beams are increased to the same extent. Pasting carbon fiber cloth on the bottom of the beam can effectively limit the development and extension of cracks, so the ductility and stiffness of the reinforced beam are improved. After the steel bar yields, the load is mainly borne by carbon fiber cloth, but its strength can only exert about 60%.

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