Flexural test and calculation on capacity of reinforced concrete short beam strengthened by CFRP sheets

被引：0

作者：

Gao D. ^{[1
,2
]}

Wang T. ^{[1
,3
]}

He Y. ^{[1
]}

机构：

[1] Research Centre of New Style Building Material & Structure, Zhengzhou University, Zhengzhou

[2] College of Civil Engineering, Henan University of Engineering, Zhengzhou

[3] School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou

来源：

Jianzhu Jiegou Xuebao/Journal of Building Structures | 2017年 / 38卷 / 11期

关键词：

Carbon fiber reinforced polymer (CFRP) sheet; Flexural capacity; Reinforced concrete short beam; Static test; Strengthening;

D O I：

10.14006/j.jzjgxb.2017.11.014

中图分类号：

学科分类号：

摘要：

The flexural tests of eleven reinforced concrete beams strengthened by carbon fiber reinforced polymer (CFRP) sheets with different span-depth ratios were conducted to investigate the influences of span-depth ratio, ratio of longitudinal reinforcement and amount of CFRP sheets on ultimate load of reinforced concrete beams. The experimental results show that: the failure modes of reinforced concrete beams strengthened by CFRP sheets are CFRP sheets fracture and concrete crushing; with the decrease of span-depth ratio, the ultimate load of reinforced concrete beams strengthened by CFRP sheets is improved significantly; with the increase of ratio of longitudinal reinforcement and number of CFRP sheets, the ultimate load of reinforced concrete short beams strengthened by CFRP sheets is also improved significantly, respectively. Based on the experimental results of this paper and others, the calculation method on flexural capacity of reinforced concrete beams strengthened by CFRP sheets was proposed, which considers the effects of span-depth ratio and can be used to calculate the flexural capacity of reinforced concrete short beams strengthened by CFRP sheets and reinforced concrete shallow beams strengthened by CFRP sheets. © 2017, Editorial Office of Journal of Building Structures. All right reserved.

引用

页码：122 / 131

页数：9

共 15 条

[1]

Chen X., Guide for the Design and Construction of Fiber Reinforced Plastics in Civil Engineering, pp. 1-4, (2009)

[2]

Cheng H., Shang J., Lu D., Experimental study on the ultimate flexural capacity of reinforced concrete beams with BFRP, Structural Engineers, 32, 1, pp. 139-146, (2016)

[3]

Ding Z., Zhang X., Wu Y., Wang F., Experimental study on bending behavior of RC beams strengthened with CFRP sheets and AFRP sheets, Journal of Building Structures, 36, pp. 270-276, (2015)

[4]

Wang H., Zhang J., Yang X., Experimental study of flexural performance of damaged RC beams strengthened with BFRP sheets, Industrial Construction, 45, 5, pp. 153-156, (2015)

[5]

Bengar H.A., Maghsoudi A.A., Experimental investigations and verification of debonding strain of RHSC continuous beams strengthened in flexure with externally bonded FRPs, Materials and Structures, 43, 6, pp. 815-837, (2010)

[6]

Al-Rousan R.Z., Issa M.A., Flexural behavior of RC beams externally strengthened with CFRP composites exposed to severe environment conditions, KSCE Journal of Civil Engineering, 21, 6, pp. 1-10, (2016)

[7]

Dong J., Wang Q., Zhu Y., Qiu C., Experimental study on RC beams strengthened with externally bonded FRP sheets, Journal of Sichuan University (Engineering Science Edition), 42, 5, pp. 197-203, (2010)

[8]

Ouyang Y., Zhang Y., Li X., The research on shear capacity of RC beams strengthened with BFRP sheets, Industrial Construction, 39, 1, pp. 134-137, (2009)

[9]

Singh S.B., Shear response and design of RC beams strengthened using CFRP laminates, International Journal of Advanced Structural Engineering, 5, 1, (2013)

[10]

Liu H., Liu G., Xing J., Et al., Performance of pre-damaged reinforced concrete short beams strengthened with BFRP sheet on shear based on ABAQUS, Journal of Liaoning University of Technology (Natural Science Edition), 3, pp. 153-156, (2015)

← 1 2 →