[1]黄镜渟,高 鹏,马翠玲,等.BFRP布加固钢筋混凝土圆柱的抗震性能研究[J].西安建筑科技大学学报(自然科学版),2022,54(02):291-297.[doi:10.15986/j.1006-7930.2022.02.017]
　HUANG Jingting,GAO Peng,MA Cuilin,et al.Research on seismic performance of BFRP-confined reinforced circular concrete columns[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2022,54(02):291-297.[doi:10.15986/j.1006-7930.2022.02.017]
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BFRP布加固钢筋混凝土圆柱的抗震性能研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
54
期数:
2022年02期
页码:
291-297
栏目:
出版日期:
2022-04-28

文章信息/Info

Title:
Research on seismic performance of BFRP-confined reinforced circular concrete columns
文章编号:
1006-7930(2022)02-0291-07
作者:
黄镜渟1; 3; 高 鹏2; 3; 马翠玲1; 周 安2
(1.合肥学院 城市建设与交通学院,安徽 合肥 230601; 2.合肥工业大学 土木与水利工程学院,安徽 合肥 230009; 3.中国地震局工程力学研究所地震工程与工程振动重点实验室, 黑龙江 哈尔滨 065000)
Author(s):
HUANG Jingting1; 3;  GAO Peng2; 3;  MA Cuilin1;  ZHOU An2
(1.School of Urban Construction and Transportation, Hefei University, Hefei 230601, China; 2.School of Civil Engineering, Hefei University of Technology, Hefei 230009, China; 3.Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Haerbin 065000, China)
关键词:
玄武岩纤维;  加固;  钢筋混凝土柱;  低周反复荷载;  变形能力;  有限元分析
Keywords:
basalt fiber;  retrofitting;  reinforced concrete columns;  low cyclic loading;  deformation capacity;  finite element analysis
分类号:
TU375.3
DOI:
10.15986/j.1006-7930.2022.02.017
文献标志码:
A
摘要:
基于4根玄武岩纤维布(Basalt Fiber Reinforced Plastic, BFRP)约束钢筋混凝土圆柱和2根未加固柱的低周反复侧向加载试验,研究了试件的受力性能和机理,对比分析了剪跨比、轴压比和加固方式对柱变形性能的影响.利用ABAQUS软件对试件进行非线性有限元分析,且验证了模型的有效性.在此基础上,以BFRP包裹层数、纵筋配筋率和箍筋配箍率为变化参数,重点研究了各参数对加固柱抗震变形能力的影响.结果表明:随着剪跨比的减小及轴压比的增大,加固柱延性性能明显降低,且BFRP对低剪跨比加固柱变形能力的提高效果最好; 等BFRP加固量下全包较条带加固柱抗震性能略优; 加固柱的变形能力随着包裹层数得提高而增强,但层数超过4层后,BFRP对柱的加固效果不再明显; 当加固柱的纵筋配筋率增至3.2%时,其延性性能变化趋势由上升转为下降; 而增加箍筋配箍率则可显著改善加固柱的极限位移.
Abstract:
The low cyclic lateral loading tests were conducted on four basalt fiber reinforced plastic(BFRP)confined circular columns and two unconfined columns. The mechanical behavior and mechanism of specimens were investigated, and the influences on the deformation performance were analyzed by the parameters of shear span ratio, axial compression ratio and confining method. Nonlinear finite element analysis of the specimens was carried out by ABAQUS software, and the feasibility of models was verified. Then, the influences of BFRP layer, longitudinal reinforcement ratio and stirrup ratio on the seismic deformation capacity of columns were studied. Results show that with the reduction of shear span ratio and increment of axial compression ratio, the ductility of confined columns drops significantly, and the BFRP has the best effect on improving the deformation capacity of the columns reinforced with low shear-span ratio. With the same amount of BFRP, the seismic behavior of all wrapped columns is slightly better than that of partial wrapped columns. Moreover, the column deformation capacity is improved with the increase of BFRP layer, but the BFRP confinement is not obvious with more than four layers. When the longitudinal reinforcement ratio of columns reaches 3.2%, the ductility trend changes from rise to drop, while increasing the stirrup ratio can significantly improve the ultimate displacement of reinforced columns.

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相似文献/References:

[1]刘 华,胡文乐,何朋立,等.玄武岩纤维灰土力学特性及扩宽路堤边坡稳定性分析[J].西安建筑科技大学学报(自然科学版),2021,53(01):53.[doi:10.15986/j.1006-7930.2021.01.008]
　LIU Hua,HU Wenle,HE Pengli,et al.Mechanical properties of basalt fiber ash soil and stability analysis of widened embankment slope[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2021,53(02):53.[doi:10.15986/j.1006-7930.2021.01.008]

备注/Memo

备注/Memo:
收稿日期:2021-04-01修改稿日期:2021-04-21
基金项目:国家自然科学基金资助项目(51208166); 中国地震局地震工程与工程振动重点实验室重点专项(2020EEEVL0417); 合肥学院人才科研基金(21-22RC38); 安徽省高校优秀青年人才基金项目(GXYQ2020068)
第一作者:黄镜渟(1988—),女,讲师,博士,主要研究方向为纤维复合材料加固混凝土结构.E-mail:huangjt@hfuu.edu.cn
更新日期/Last Update: 2022-04-28