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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

37卷

期数:

2020年04期

页码:

23-31

栏目:

出版日期:

2020-07-30

文章信息/Info

Title:

Experiment on Seismic Performance of CFRP Reinforced Concrete Column with MRD

文章编号:

1673-2049(2020)04-0023-09

作者:

赵 军¹,王培培¹,冯益博¹,张香成²,阮晓辉²

(1. 郑州大学 土木工程学院,河南 郑州 450001; 2. 郑州大学 力学与安全工程学院,河南 郑州 450001)

Author(s):

ZHAO Jun¹, WANG Pei-pei¹, FENG Yi-bo¹, ZHANG Xiang-cheng², RUAN Xiao-hui²

(1. School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, Henan, China; 2. School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, Henan, China)

关键词:

CFRP筋;  混凝土柱;  磁流变阻尼器;  电流;  抗震性能;  自复位

Keywords:

CFRP bar;  concrete column;  MRD;  current;  seismic performance;  self-centering

分类号:

TU398

DOI:

10.19815/j.jace.2019.10019

文献标志码:

A

摘要:

为探讨磁流变阻尼器(MRD)对碳纤维增强复合材料(CFRP)筋混凝土柱抗震性能的影响,完成了1个普通钢筋混凝土柱和2个外置MRD的CFRP筋混凝土柱的水平低周反复荷载试验,其中MRD的电流分别为150 mA和80 mA,研究了不同电流的MRD对CFRP筋混凝土柱的破坏形态、滞回曲线、骨架曲线、刚度退化、耗能能力、残余变形等的影响以及其与普通钢筋混凝土柱的性能区别。结果表明:与钢筋混凝土柱相比,设置MRD的CFRP筋混凝土柱裂缝较为分散且发展高度较高,极限变形增大,滞回曲线更加饱满,承载力更高,耗能能力明显提升,能量耗散系数可提高104.9%,而且在合理的使用方式下残余位移大幅度减小,最多可减小76.66%,拥有较好的自复位能力; 同时MRD的电流大小对CFRP筋混凝土柱抗震性能影响较大; 相较于配置80 mA的MRD混凝土柱,配置150 mA的MRD混凝土柱的承载能力和耗能能力更高,能量耗散系数可以提高28.61%,且在加载过程刚度始终较大; 不同电流下的MRD混凝土柱破坏模式相同,且在该使用方式下的MRD对残余变形的影响也较小。

Abstract:

In order to study the effect of magnetorheological damper(MRD)on seismic performance of concrete columns reinforced with carbon fiber reinforced plastics(CFRP), a low-cycle and reverse horizontal loading test was completed for one ordinary reinforced concrete column and two CFRP reinforced concrete columns with MRD, the currents of MRD were 150 mA and 80 mA, respectively. The influence of MRD with different currents for the CFRP reinforced concrete columns on the failure modes, hysteretic curves, skeleton curves, stiffness degradation, energy dissipation capacity, residual deformation and the performance differences between reinforced concrete column and CFRP reinforced concrete column with MRD were studied. The results show that compared with reinforced concrete column, CFRP reinforced concrete columns with MRD have relatively dispersed cracks and a higher development height, the ultimate deformation increases, the hysteretic curve is fuller, the bearing capacity is higher and the energy dissipation capacity is significantly improved, the energy dissipation coefficient is increased by 104.9%, moreover the residual displacement is greatly reduced in the reasonable way, up to 76.66% reduction, satisfactory self-centering capacity is shown. Simultaneously, the current of MRD has a great influence on the performance of CFRP reinforced concrete columns. Compared with the concrete column equipped with the MRD of 80 mA, the 150 mA MRD concrete column has higher bearing capacity and energy dissipation capacity, the energy dissipation coefficient is increased by 28.61% and its stiffness is always greater during loading, the initial stiffness is greater. The failure mode of concrete columns with MRD under different currents is the same, and the influence of MRD on the residual deformation is less in this way.

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相似文献/References:

[1]高婧,陈宝春.波形钢板钢管混凝土柱的极限承载力[J].建筑科学与工程学报,2008,25(04):47.
　GAO Jing,CHEN Bao-chun.Ultimate Load Carrying Capacity of Concrete-filled Steel Tubular Column with Corrugated Steel Webs[J].Journal of Architecture and Civil Engineering,2008,25(04):47.
[2]赵 军,沈富强,司晨哲,等.CFRP筋/钢筋混凝土剪力墙抗震性能试验[J].建筑科学与工程学报,2018,35(05):46.
　ZHAO Jun,SHEN Fu-qiang,SI Chen-zhe,et al.Experiment on Seismic Performance of Shear Wall Reinforced with CFRP Bars and Steel Bars[J].Journal of Architecture and Civil Engineering,2018,35(04):46.
[3]单 波,佟广权,刘其元.CFRP筋与海水海砂混凝土黏结性能试验[J].建筑科学与工程学报,2020,37(05):113.[doi:10.19815/j.jace.2019.12100]
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备注/Memo

备注/Memo:

收稿日期:2019-10-15
基金项目:国家重点研发计划项目(2016YFE0125600); 教育部创新团队发展计划项目(IRT_16R67)
作者简介:赵 军(1971-),男,河南漯河人,教授,博士研究生导师,工学博士,E-mail:zhaoj@zzu.edu.cn。
通信作者:王培培(1994-),女,河南安阳人,工学硕士研究生,E-mail:2457994707@qq.com。

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更新日期/Last Update: 2020-07-29