A method to improve the ductility of near surface mounted carbon fiber reinforced polymers strengthened reinforced concrete beam

被引：0

作者：

Yu, Jiangtao ^{[1
,2
]}

Zhan, Kaili ^{[1
]}

Chen, Jing ^{[3
]}

机构：

[1] Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai

[2] Shanghai Key Laboratory of Engineering Structure Safety, Shanghai

[3] ARTS Group Co., Ltd., Suzhou

来源：

Tongji Daxue Xuebao/Journal of Tongji University | 2016年 / 44卷 / 11期

关键词：

Carbon fiber reinforced polymers; Ductility; Near surface mounted; Strengthening; Test;

D O I：

10.11908/j.issn.0253-374x.2016.11.004

中图分类号：

学科分类号：

摘要：

A novel method was proposed to enhance the ductility of the near surface mounted (NSM) carbon fiber reinforced polymers (CFRP) strengthening system. The principle of the proposed method is to enable stable and controlled slip of CFRP reinforcements in ultimate state, so as to significantly improve the bending ductility and simultaneously fully use the tensile strength of CFRP without rupture. The related design algorithm was introduced, and the bond-slip tests on NSM-CFRP system and the bending tests on NSM-CFRP strengthened reinforced concrete (RC) beams were conducted to verify the effectiveness of the proposed method and the accuracy of the design algorithm. © 2016, Editorial Department of Journal of Tongji University. All right reserved.

引用

页码：1667 / 1673and1694

共 25 条

[1]

Thomsen H., Spacone E., Limkatanyu S., Et al., Failure mode analyses of reinforced concrete beams strengthened in flexure with externally bonded fiber-reinforced polymers, Journal of Composites for Construction, 8, 2, (2004)

[2]

Bonacci J.F., Maalej M., Behavioral trends of RC beams strengthened with externally bonded FRP, Journal of Composites for Construction, 5, 2, (2001)

[3]

Fanning P.J., Kelly O., Ultimate response of RC beams strengthened with CFRP plates, Journal of Composites for Construction, 5, 2, (2001)

[4]

Mayo R., Nanni A., Watkins S., Et al., Strengthening of Bridge G-270 with Externally Bonded CFRP Sheets, (2000)

[5]

Sebastian W.M., Significance of midspan debonding failure in FRP-plated concrete beams, Journal of Structural Engineering, 127, 7, (2001)

[6]

Seim W., Horman M., Karbhari V., Et al., External FRP post strengthening of scaled concrete slabs, Journal of Composites for Construction, 5, 2, (2001)

[7]

Tumialan G., Serra P., Nanni A., Et al., Concrete cover delamination in RC beams strengthened with CFRP sheets, Proceedings of 4th International Symposium on Fiber Reinforced Polymer Reinforcement for Concrete Structures, pp. 725-736, (1999)

[8]

Zarnic R., Gostic S., Bosiljkov V., Et al., Improvement of bending load-bearing capacity by externally bonded plates, Proceedings of Creating with Concrete, pp. 433-442, (1999)

[9]

Arduini M., Tommaso A.D., Nanni A., Brittle failure in FRP plate and sheet bonded beams, ACI Structural Journal, 94, 4, (1997)

[10]

Smith S.T., Teng J.G., CFRP-strengthened RC beams. I: review of debonding strength models, Engineering Structures, 24, 4, (2002)

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