碳纤维增强复合材料加固再生混凝土复合受扭柱抗震性能试验研究

谢强; 邵永健; 朱开济

doi:10.3724/j.gyjzG23042605

碳纤维增强复合材料加固再生混凝土复合受扭柱抗震性能试验研究

doi: 10.3724/j.gyjzG23042605

苏州科技大学土木工程学院, 江苏苏州 215011

基金项目:

江苏省研究生实践创新计划项目(SJCX21_1421)。

详细信息

作者简介:
谢强,硕士,主要从事混凝土结构及工程结构检测与加固方面的研究。

通讯作者:
邵永健,教授,主要从事混凝土结构及工程结构检测与加固方面的研究,syjsz@163.com。

计量
- 文章访问数: 58
- HTML全文浏览量: 11
- PDF下载量: 3
- 被引次数: 0
出版历程
- 收稿日期: 2023-04-26
- 网络出版日期: 2024-06-24

Experimental Research on Seismic Performance of CFRP Reinforced Recycled Aggregate Concrete Composite Torsional Columns

School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China

摘要

摘要: 为探究碳纤维增强复合材料(CFRP)加固再生混凝土复合受扭柱的抗震性能,设计了2根CFRP加固再生混凝土柱试件和1根未采用CFRP加固的再生混凝土柱试件,并进行了复合受扭下的拟静力试验,分析了应变、裂缝发展规律及破坏形态。结果表明:2根CFRP加固试件发生扭型破坏,1根未加固试件发生弯扭型破坏;CFRP加固柱试件具有更好的抗震性能,峰值扭矩和延性系数分别提升了44.68%、71.41%,强度衰减、刚度退化、耗能及累积损伤等性能都得到明显提升;纵筋配筋率对试件的抗震性能影响不大,峰值扭矩提升了5.45%,刚度退化及累积损伤等性能得到改善。
- 碳纤维增强复合材料加固 /
- 再生混凝土柱 /
- 试验研究 /
- 纵筋配筋率 /
- 复合受扭 /
- 抗震性能
Abstract: In order to study the seismic performance of CFRP reinforced recycled aggregate concrete composite torsional columns, two specimens reinforced by CFRP and one specimen not reinforced by CFRP were designed and carried out pseudo-static tests under composite torsional conditions, and the strain, crack development law and failure mode were analyzed. The results showed that two CFRP reinforced specimens had undegone torsional failure, and one unreinforced specimen had undergone bending and torsional failure.CFRP reinforced column specimens had better seismic performance, the peak torque and ductility coefficient increased by 44.68% and 71.41%, respectively, and the strength attenuation, stiffness degradation, energy dissipation and cumulative damage were significantly improved.The ratio of longitudinal reinforcement has little effect on the seismic performance of the specimen, the peak torque is increased by 5.45%, and the stiffness degradation and cumulative damage were improved.
- CFRP reinforcement /
- recycled aggregate concrete column /
- experimental research /
- ratio of longitudinal reinforcement /
- combined torsion /
- seismic performance

HTML全文

参考文献(15)

[1]	卢亦焱,史健勇,赵国藩.碳纤维布和角钢复合加固轴心受压混凝土柱的试验研究[J].建筑结构学报,2003(5):18-23.
[2]	王震宇,马财龙,乔鑫,等.CFRP加固RC梁-板-柱框架中节点抗震性能试验研究[J].建筑结构学报,2016,37(5):226-232.
[3]	徐玉野,王振,林碧兰.CFRP加固锈蚀钢筋混凝土短柱的抗震性能[J].土木与环境工程学报(中英文),2019,41(3):67-76.
[4]	宋文,冯鹏,黄福胜,等.纤维增强复合材料增强和修复加固大尺寸钢筋混凝土柱抗震性能研究[J].工业建筑,2019,49(9):130-138.
[5]	DIRIKGIL T. Corrigendum to experimental investigation of the contributions of CFRP and externally collar strengthening to the seismic performance of RC columns with different cross-sections[J]. Structures, 2020, 24(4):266-281.
[6]	MURAD Y, AL-BODOUR W. Seismic retrofitting of severely damaged RC connections made with recycled concrete using CFRP sheets[J]. Frontiers of Structural and Civil Engineering, 2020,14:554-568.
[7]	ELCI H. Seismic strengthening of improperly repaired reinforced concrete columns using CFRP confinement[J]. Structures, 2020, 28(12):266-275.
[8]	肖建庄,马旭伟,刘琼,等.全再生混凝土概念的衍化与研究进展[J].建筑科学与工程学报,2021,38(2):1-15.
[9]	尹海鹏,曹万林,张亚齐,等.不同再生骨料取代率再生混凝土柱抗震试验研究[J].世界地震工程,2010,26(1):57-63.
[10]	白国良,刘超,赵洪金,等.再生混凝土框架柱抗震性能试验研究[J].地震工程与工程振动,2011,31(1):61-66.
[11]	邵永健.混凝土结构设计原理[M].北京:北京大学出版社,2010.
[12]	邵永健,曹晓罗,孙宝强.一种构件复合受扭实验装置及方法:ZL201310027848.9[P].2014-10-15.
[13]	刘祖强.型钢混凝土异形柱框架抗震性能及设计方法研究[D].西安:西安建筑科技大学,2012.
[14]	杨游,杨永强,公茂盛,等.建筑结构损伤模型研究综述[C]//第28届全国结构工程学术会议论文集(第Ⅱ册). 南昌:2019:447-455.
[15]	刁波,李淑春,叶英华.反复荷载作用下混凝土异形柱结构累积损伤分析及试验研究[J].建筑结构学报,2008,29(1):57-63.