CALCULATION OF THE FLEXURAL CAPACITY OF R．C BEAMS STRENGTHENED WITH PRESTRESSED CFRP UNDER SUSTAINING LOAD AND ANALYSIS OF THE INFLUENTIAL FACTORS

Xiong Xueyu; Fan Xinhai

doi:10.13204/j.gyjz201004026

Volume 40 Issue 4

Dec. 2014

Turn off MathJax

Article Contents

Article Navigation > INDUSTRIAL CONSTRUCTION > 2010 > 40(4): 121-125

Xiong Xueyu, Fan Xinhai. CALCULATION OF THE FLEXURAL CAPACITY OF R．C BEAMS STRENGTHENED WITH PRESTRESSED CFRP UNDER SUSTAINING LOAD AND ANALYSIS OF THE INFLUENTIAL FACTORS[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(4): 121-125. doi: 10.13204/j.gyjz201004026

Citation:

Xiong Xueyu, Fan Xinhai. CALCULATION OF THE FLEXURAL CAPACITY OF R．C BEAMS STRENGTHENED WITH PRESTRESSED CFRP UNDER SUSTAINING LOAD AND ANALYSIS OF THE INFLUENTIAL FACTORS[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(4): 121-125. doi: 10.13204/j.gyjz201004026

Citation:

Xiong Xueyu, Fan Xinhai. CALCULATION OF THE FLEXURAL CAPACITY OF R．C BEAMS STRENGTHENED WITH PRESTRESSED CFRP UNDER SUSTAINING LOAD AND ANALYSIS OF THE INFLUENTIAL FACTORS[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(4): 121-125. doi: 10.13204/j.gyjz201004026

PDF( 0 KB)

CALCULATION OF THE FLEXURAL CAPACITY OF R．C BEAMS STRENGTHENED WITH PRESTRESSED CFRP UNDER SUSTAINING LOAD AND ANALYSIS OF THE INFLUENTIAL FACTORS

doi: 10.13204/j.gyjz201004026

Xiong Xueyu^1,2,
Fan Xinhai¹

1.
1. Department of Building Engineering,Tongji University,Shanghai 200092,China;
2.
2. Key Laboratory of Advanced Civil Engineering Materials(Tongji University),Ministry of Education,Shanghai 200092,China

Received Date: 2009-06-26
Publish Date: 2010-04-20

Abstract

Abstract

The concrete members strengthened with prestressed CFRP is an effective method. Through the theoretical analysis and summary of flexural failure of reinforce concrete beams strengthened with prestressed CFRP under sustaining load,the simplified calculation formulas of load carrying capacity are presented?and the influence of the sustaining loads and pre-stressed levels on ultimate load-carrying capacity are analyzed. The theoretical analysis results indicated that when the concrete in the compression zone is crushed,ultimate load-carrying capacity is decreasing with sustaining loads increasing,whereas ultimate load-carrying capacity is increasing with prestressed levels increasing and has extreme value. When CFRP sheet is ruptured,the change of ultimate?load-carrying capacity was completely contrary to that of the crushe concrete in compression zone. The effect of sustaining loads on ultimate load-carrying capacity isn't obvious and can be ignored. Finally control value on tensile strain of the CFRP is also given based on the ductility failure of the strengthened members.
- prestressed CFRP sheet,
- strengthen,
- reinforce concrete beams,
- flexural capacity,
- sustaining load

FullText(HTML)

References(14)

References

EI-Hacha R,Wight R G,Green M F. Innovative System for Prestressing FRP Sheets[J]. ACI Structural Journal,2003,100(3) :305-313.

[2] Triantafillou T C,Deskovic N,Deuring M. Strengthening of Concrete Structures with Prestressed Fiber Reinforced Plastic Sheets[J]. ACI Structural Journal,1992,89(3) ,235-244.

[3] Garden H N,Hollaway L C. The Flexural Rehabilitation of Reinforced Concrete Beams by the Use of Prestressed Advanced Composite Plates[J]. Composites Science and Technology,1998(58) :1259-1275.

[4] 张建伟,杜修力,邓宗才,等. 预应力芳纶纤维布加固混凝土梁的受弯性能研究[J]. 建筑结构学报,2006,27(5) :101-109.

[5] 杨勇新,李庆伟,岳清瑞. 预应力碳纤维布加固混凝土梁预应力损失试验研究[J]. 工业建筑,2006,36(4) :5-8.

[6] 尚守平,彭晖. 预应力碳纤维布材加固混凝土受弯构件的抗弯性能研究[J]. 建筑结构学报,2003,24 (5) :24-30.

[7] 飞渭,江世永,彭飞飞. 预应力碳纤维布加固混凝土受弯构件正截面承载力分析[J]. 四川建筑科学研究,2003(3) :42-45.

[8] 彭飞飞,江世永,飞渭. 预应力CFRP 布加固混凝土梁不卸载时的抗弯承载力[J]. 四川建筑科学研究,2003,29(3) :60-63.

[9] 叶列平,庄江波,沙吾列提拜开依,等. 预应力碳纤维布加固钢筋混凝土T 形梁的试验研究[J]. 工业建筑,2004,34 (3) :94-101.

[10] 丁大钧,蒋永生,蓝宗建. 钢筋混凝土构件抗裂度、裂缝和刚度[M]. 南京:南京工学院出版社,1986.

[11] GB 500102002 混凝土结构设计规范[S].

[12] GB 503672006 混凝土结构加固设计规范) [S].

[13] ACI 440. 2R22002 Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures [S].

[14] Niu Hedong,Wu Zhishen. Finite Element Analysis on Anchorage Treatment in Concrete Structures Flexural Strengthened with Prestressed FRP Laminates. Proceedings of the International Symposium on Latest Achievement of Technology and Research on Retrofiting Concrete Structures[J]. Japan Concrete Institute,2003(7):69-76.

Relative Articles

Supplements(0)

Cited By

Proportional views