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土木工程
Vol. 4 No. 3 (May 2015)
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CFRP加固混凝土短柱轴压性能研究
Performance Study on Axial Compression of CFRP-Strengthened Concrete Columns
DOI:
10.12677/HJCE.2015.43014
,
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被引量
下载: 2,421
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作者:
刘晓凯
,
王清远
,
王志宇
:四川大学建筑与环境学院,四川 成都
关键词:
碳纤维布
;
加固
;
承载力
;
力学性能
;
CFRP
;
Reinforce
;
Bearing Capacity
;
Mechanical Property
摘要:
通过对6个混凝土柱的静力加载试验,本文研究了碳纤维布加固对不同截面混凝土柱的力学性能的影响,分析了碳纤维布粘贴层数及短柱截面类型对碳纤维布加固效果的具体影响。结果表明:碳纤维布可明显提高混凝土柱的刚度和极限承载力,减小柱的竖向位移,减小柱的横向应变和纵向应变;当碳纤维布粘贴层数为两层时,其影响程度比粘贴一层时更为显著,但其提高程度不与加固面积成正比;碳纤维布加固对混凝土圆柱极限承载力和刚度的提高优于对混凝土方柱的提高。
Abstract:
Through the static load test of six CFRP reinforced concrete columns, the paper studies the CFRP reinforced concrete columns with different cross section of the influence of mechanical properties, and analyzes the specific influence of the carbon fiber cloth paste layer and column’s section type to carbon fiber cloth reinforcement effect. The results show that: Carbon fiber cloth can obviously increase the stiffness and ultimate bearing capacity of concrete columns, reduce the vertical dis-placement of column and reduce the lateral strain and the axial strain of the columns. When the paste layer of carbon fiber cloth is two, the impact is more obvious. But the increase degree is not proportional to the reinforced area; the improvement of carbon fiber cloth reinforcement to con-crete columns’ ultimate bearing capacity and stiffness is superior to the improvement of concrete square column.
文章引用:
刘晓凯, 王清远, 王志宇. CFRP加固混凝土短柱轴压性能研究[J]. 土木工程, 2015, 4(3): 113-118.
http://dx.doi.org/10.12677/HJCE.2015.43014
参考文献
[
1
]
胡长青, 陈尚建(2009)粘钢加固轴心受压钢筋混凝土短柱的试验研究. 武汉理工大学学报, 31, 81-84.
[
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李殿平, 孙小巍, 李整建 (2011) 碳纤维布加固混凝土柱的研究与实践. 江苏建筑, 3, 36-37.
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董江峰, 王清远, 邱慈长, 等 (2010) 外贴碳纤维布加固加固混凝土梁断裂特性的试验研究. 土木工程学报, S2, 76-82.
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Wang, Y.C. and Hsu K. (2009) Design recommendations for the strengthening of reinforced concrete beam with externally bonded composite plates. Composite Structures, 88, 323-332.
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[
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Costa, I.G. and Barros, J.A.O. (2010) Flexural and shear strengthening of RC beams with composite materials—The influence of cutting steel stirrups to install CFRP strips. Cement & Concrete Composites, 32, 544-553.
[
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Rafi, M.M., Nadjai, A., Ali, F. and Talamona, D. (2008) Aspects of behaviour of CFRP reinforced concrete beams in bending. Construction and Building Materials, 22, 277-285.
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袁书成, 梁危, 王清远, 朱艳梅 (2013) 横向应变对复合材料加固木柱极限承载力计算分析. 建筑结构, S1, 806- 810.
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