|本期目录/Table of Contents|

[1]林 峰,黎艳翔,董 羽.CFRP加固钢筋混凝土直剪承载力试验[J].建筑科学与工程学报,2015,32(06):43-49.
 LIN Feng,LI Yan-xiang,DONG Yu.Experiment on Shear Transfer Capacity of Reinforced Concrete Strengthened with CFRP[J].Journal of Architecture and Civil Engineering,2015,32(06):43-49.
点击复制

CFRP加固钢筋混凝土直剪承载力试验(PDF)
分享到:

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

卷:
32卷
期数:
2015年06期
页码:
43-49
栏目:
出版日期:
2015-11-30

文章信息/Info

Title:
Experiment on Shear Transfer Capacity of Reinforced Concrete Strengthened with CFRP
作者:
林 峰黎艳翔董 羽
同济大学建筑工程系
Author(s):
LIN Feng LI Yan-xiang DONG Yu
Department of Structural Engineering, Tongji University
关键词:
碳纤维增强复合材料钢筋混凝土直剪加固极限承载力分量模型
Keywords:
CFRP reinforced concrete shear transfer strengthening ultimate bearing capacity component model
分类号:
-
DOI:
-
文献标志码:
A
摘要:
设计15个外贴碳纤维增强复合材料(CFRP)的Z型试件进行直剪加载试验,试验参数包括直剪面钢筋配筋率(0.46%~1.2%)和CFRP加固率(0%~0.3%)。依据试验结果提出加固后钢筋混凝土直剪承载力预测表达式,并基于分量模型分析其加固机理。研究结果表明:直剪承载力随CFRP加固率增大而提高,提高幅度为6%~50%;相同CFRP加固率时,直剪承载力提高幅度随配筋率的增加而降低,承载力提高源于CFRP提供了附加的侧向夹紧力;当外贴CFRP和内埋直剪钢筋提供相等的侧向夹紧力时,两者对直剪承载力的贡献作用相近;所提出的承载力预测表达式具有较好的适用性。
Abstract:
Total fifteen typical Z-type specimens strengthened with external carbon fiber reinforced polymer (CFRP) strips were tested to investigate their shear transfer capacities. Test parameters included reinforcing steel bar ratios(0.46%-1.2%) and CFRP reinforcement ratios (0%-0.3%). Expressions were proposed to predict the shear transfer capacities of CFRP strengthened concrete. The reinforcement mechanism of shear transfer was analyzed based on component model. The study results show that the shear transfer capacities improve in a range of 6%-50%with the increasing of CFRP reinforcement ratios. Moreover, for a given CFRP reinforcement ratio, the percentage of improvement decreases with the increasing of reinforcing steel bar ratios. The capacity improvement is believed due to the clapping force from CFRP.An approximate strengthening effect is realized when the external CFRP and the internal reinforcements provide identical clapping force in lateral direction. The proposed expressions to predict the shear transfer capacities have good applicability.

参考文献/References:

相似文献/References:

[1]吴方伯,李 钧,邓利斌,等.大尺寸钢筋混凝土密肋薄腹梁抗剪性能试验[J].建筑科学与工程学报,2014,31(04):1.
 WU Fang-bo,LI Jun,DENG Li-bin,et al.Experiment on Shear Behavior of Largesize Reinforced Concrete Multiribbed Thin Web Beams[J].Journal of Architecture and Civil Engineering,2014,31(06):1.
[2]鲍文博,付亮华,陆海燕,等.钢混框剪高层结构地震能量分布及耗散研究[J].建筑科学与工程学报,2015,32(03):38.
 BAO Wen-bo,FU Liang-hua,LU Hai-yan,et al.Research on Seismic Energy Distribution and Dissipation of Reinforced Concrete Framewall Highrise Structure[J].Journal of Architecture and Civil Engineering,2015,32(06):38.
[3]延永东,姚昌建,刘荣桂,等.氯盐环境下开裂混凝土耐久性研究进展[J].建筑科学与工程学报,2015,32(04):21.
 YAN Yong-dong,YAO Chang-jian,LIU Rong-gui,et al.Research Progress on Durability of Cracked Concrete Under Chloride Environment[J].Journal of Architecture and Civil Engineering,2015,32(06):21.
[4]谢建和,黄昆泓,李自坚,等.BFRP和CFRP加固受弯混凝土界面疲劳性能试验[J].建筑科学与工程学报,2015,32(04):53.
 XIE Jian-he,HUANG Kun-hong,LI Zi-jian,et al.Experiment on Fatigue Behaviors of Flexural Concrete Interface Strengthened with BFRP and CFRP[J].Journal of Architecture and Civil Engineering,2015,32(06):53.
[5]赵均海,杜文超,张常光.CFRP-方钢管混凝土轴压短柱承载力分析[J].建筑科学与工程学报,2015,32(06):30.
 ZHAO Jun-hai,DU Wen-chao,ZHANG Chang-guang.Analysis of Load Carrying Capacity of Concrete-filled Square CFRP-steel Tubular Stub Column Under Axial Compression[J].Journal of Architecture and Civil Engineering,2015,32(06):30.
[6]吴波,乔长江.约束混凝土梁的升降温全过程轴力分析[J].建筑科学与工程学报,2010,27(01):12.
 WU Bo,QIAO Chang-jiang.Axial Force Analysis of Restrained Concrete Beams During Heating and Cooling Phases[J].Journal of Architecture and Civil Engineering,2010,27(06):12.
[7]马志林,史庆轩,王伟.钢筋混凝土联肢剪力墙弹塑性分析[J].建筑科学与工程学报,2010,27(01):60.
 MA Zhi-lin,SHI Qing-xuan,WANG Wei.Elasto-plastic Analysis of Reinforced Concrete Coupled Shear Walls[J].Journal of Architecture and Civil Engineering,2010,27(06):60.
[8]常莹莹,贡金鑫.钢筋混凝土受弯构件的延性及弯矩重分布[J].建筑科学与工程学报,2010,27(02):38.
 CHANG Ying-ying,GONG Jin-xin.Ductility and Moment Redistribution of Reinforced Concrete Flexural Members[J].Journal of Architecture and Civil Engineering,2010,27(06):38.
[9]潘元,刘伯权,邢国华,等.基于破坏准则的钢筋混凝土结构抗倒塌研究进展[J].建筑科学与工程学报,2010,27(02):51.
 PAN Yuan,LIU Bo-quan,XING Guo-hua,et al.Research Progress of Seismic Collapse Resistance of Reinforced Concrete Structures Based on Damage Criteria[J].Journal of Architecture and Civil Engineering,2010,27(06):51.
[10]屈文俊,方瑾,周国全.混凝土受弯构件受拉钢筋最小配筋率[J].建筑科学与工程学报,2011,28(01):6.
 QU Wen-jun,FANG Jin,ZHOU Guo-quan.Minimum Reinforcement Ratio of Tensile Reinforcement for Concrete Flexural Members[J].Journal of Architecture and Civil Engineering,2011,28(06):6.

备注/Memo

备注/Memo:
更新日期/Last Update: 2015-11-30