[1]薛耀,张龙,曹双寅,等.低龄期下CFRP-钢界面黏结性能试验研究[J].东南大学学报(自然科学版),2015,45(2):360-363.[doi:10.3969/j.issn.1001-0505.2015.02.028]
 Xue Yao,Zhang Long,Cao Shuangyin,et al.Experimental study on bonding behavior of CFRP-to-steel interface under early curing age[J].Journal of Southeast University (Natural Science Edition),2015,45(2):360-363.[doi:10.3969/j.issn.1001-0505.2015.02.028]
点击复制

低龄期下CFRP-钢界面黏结性能试验研究()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第2期
页码:
360-363
栏目:
土木工程
出版日期:
2015-03-20

文章信息/Info

Title:
Experimental study on bonding behavior of CFRP-to-steel interface under early curing age
作者:
薛耀张龙曹双寅于宙
东南大学土木工程学院, 南京 210096
Author(s):
Xue Yao Zhang Long Cao Shuangyin Yu Zhou
School of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
CFRP-钢 养护龄期 黏结性能
Keywords:
CFRP(carbon fiber reinforced polymer)-to-steel curing age bonding behavior
分类号:
TU391
DOI:
10.3969/j.issn.1001-0505.2015.02.028
摘要:
对低龄期下CFRP-钢双剪试件进行了轴向拉伸试验,研究了不同养护时间下CFRP-钢黏结界面峰值滑移量、黏结刚度、有效传力长度及极限承载力的变化规律.试验结果表明:CFRP-钢界面峰值滑移量随养护时间的增加而减小;养护1 d时界面具有比较稳定的承载力和维持自身稳定的刚度;养护3 d内强度和刚度迅速增加,有效传力长度迅速减小,5~7 d内各参数趋于稳定,由此认为合理养护时间应不少于3 d.基于此,推算出CFRP-钢界面的养护时间建议值及不同低龄期下CFRP-钢黏结承载力计算公式,为CFRP在钢结构中的加固设计提供依据.
Abstract:
The axial tensile tests of carbon fiber reinforced polymer(CFRP)-to-steel double shear specimen under early curing age were carried out. The variation laws of the peak slip value, the bonding rigidity, the effective force transmission length and the ultimate bearing capacity of the bonding interface of CFRP-to-steel under early curing age were ivestigated.The experimental results show that the peak slip values of the bonding interface of CFRP-to-steel decrease with the curing time passing by, and the interface has a stable bearing capacity and rigidity for self-stability with the curing age of 1 d. The strength and rigidity increase rapidly and the length of the effective force transmission decreases rapidly in 3 d. Meanwhile, these parameters tend to be stable in 5 to 7 d. Therefore, the reasonable curing age should be no less than 3 d. Based on these results, the recommended value of the curing age of CFRP-to-steel interface and the formulae of the bonding bearing capacity of CFRP-to-steel under different curing ages are put forward, providing a basis for strengthening design of CFRP in steel structures.

参考文献/References:

[1] Yu T, Fernando D, Teng J G, et al. Experimental study on CFRP-to-steel bonded interfaces[J]. Composites Part B: Engineering, 2012, 43(5): 2279-2289.
[2] Zhao X L, Zhang L. State-of-the-art review on FRP strengthened steel structures[J]. Engineering Structures, 2007, 29(8): 1808-1823.
[3] Teng J G, Yu T, Fernando D. Strengthening of steel structures with fiber-reinforced polymer composites[J]. Journal of Constructional Steel Research, 2012, 78: 131-143.
[4] 刘素丽.碳纤维布与钢板的黏结机理研究[D].武汉:武汉大学土木建筑工程学院,2004.
[5] 彭福明.纤维增强复合材料加固修复金属结构界面性能研究[D].西安:西安建筑科技大学土木工程学院,2005.
[6] 马阳春.端锚碳纤维布-型钢黏结界面受力性能研究[D].长沙:中南大学土木工程学院,2013.
[7] Xia S H, Teng J G. Behaviour of FRP-to-steel bonded joints [C]//Proceedings of the International Symposium on Bond Behaviour of FRP in Structures. Hongkong, China, 2005: 411-418.
[8] 中华人民共和国质量监督检验检疫总局,中国国家标准化管理委员会.GB/T 21526—2008结构胶黏剂:粘接前金属和塑料表面处理导则[S].北京:中国标准出版社,2008.

相似文献/References:

[1]宋鲁光,孙伟,高建明.养护龄期对混凝土氯离子扩散系数时间依赖性的影响[J].东南大学学报(自然科学版),2015,45(6):1151.[doi:10.3969/j.issn.1001-0505.2015.06.023]
 Song Luguang,Sun Wei,Gao Jianming.Influence of curing age on time dependence of chloride diffusion coefficient of concrete[J].Journal of Southeast University (Natural Science Edition),2015,45(2):1151.[doi:10.3969/j.issn.1001-0505.2015.06.023]

备注/Memo

备注/Memo:
收稿日期: 2014-07-22.
作者简介: 薛耀(1990—),男,硕士生;曹双寅(联系人),男,博士,教授,博士生导师,101000873@seu.edu.cn.
基金项目: 国家重点基础研究发展计划(973计划)资助项目(2012CB026200).
引用本文: 薛耀,张龙,曹双寅,等.低龄期下CFRP-钢界面黏结性能试验研究[J].东南大学学报:自然科学版,2015,45(2):360-363. [doi:10.3969/j.issn.1001-0505.2015.02.028]
更新日期/Last Update: 2015-03-20