[1]杨 坤,林 琦,史庆轩.高强箍筋约束高强混凝土柱弯曲破坏骨架曲线[J].西安建筑科技大学学报(自然科学版),2020,52(06):813-820.[doi:10.15986/j.1006-7930.2020.06.006 ]
　YANG Kun,LIN Qi,SHI Qingxuan.Flexural failure skeleton curve of high strength concrete columns confined by high strength stirrups[J].J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition),2020,52(06):813-820.[doi:10.15986/j.1006-7930.2020.06.006 ]
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高强箍筋约束高强混凝土柱弯曲破坏骨架曲线()
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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:
52
期数:
2020年06期
页码:
813-820
栏目:
出版日期:
2020-12-20

文章信息/Info

Title:
Flexural failure skeleton curve of high strength concrete columns confined by high strength stirrups
文章编号:
1006-7930(2020)06-0813-08
作者:
杨 坤1; 林 琦1; 史庆轩2
(1.长安大学 建筑工程学院,陕西 西安 710064; 2.西安建筑科技大学 土木工程学院,陕西 西安 710055)
Author(s):
YANG Kun1;  LIN Qi1;  SHI Qingxuan2
(1.School of Civil Engineering, Chang'an University, Xi'an 710064, China; 2.School of Civil Engineering, Xi'an Univ. of Arch. & Tech., Xi'an 710055, China)
关键词:
高强箍筋;  高强混凝土;  约束混凝土;  骨架曲线;  弯曲破坏
Keywords:
high-strength stirrups;  high-strength concrete(HSC);  confined concrete;  skeleton curve;  flexural failure
分类号:
TU 352.11; TU 37
DOI:
10.15986/j.1006-7930.2020.06.006
文献标志码:
A
摘要:
为研究高强箍筋约束高强混凝土(HSC)柱弯曲破坏的荷载-位移全曲线,对10根HSC柱的低周反复加载试验结果进行研究,分析了轴压比、箍筋间距以及配箍率对其骨架曲线的影响,给出了HSC柱4个特征点——开裂点、屈服点、峰值点和极限点所对应荷载及位移的计算方法,建立了高强箍筋约束高强混凝土柱四折线荷载-位移骨架曲线简化模型.对比表明,本文提出的骨架曲线模型可以较好表达该类型柱弯曲破坏各特征点的趋势,其计算结果与试验结果拟合较好.
Abstract:
To study the load-displacement curve of high-strength concrete(HSC)columns confined by high-strength stirrups in flexural failure, low cyclic reversed loading tests were carried out on ten HSC columns with different design parameters. The effects of axial compression ratio, stirrup spacing, and stirrup ratio on skeleton curves of HSC columns were analyzed. Based on the test data analysis, the skeleton curve model for predicting the cracking, yielding, maxing and failure loads, as well as corresponding displacements, of HSC columns failed in flexure mode were developed. Then the four-linear skeleton curve model of HSC columns with flexure failure was established according to the four feature points. According to the comparison results, it's shown that the skeleton curve model proposed in this paper can better express the characteristic points of this type of column, and the calculated results fit well with the test results.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2020-04-13 修改稿日期:2020-11-09
基金项目:国家自然科学基金资助项目(51708035); 中央高校基本科研业务费专项资金资助项目(300102289202)
第一作者:杨 坤(1982-),女,博士,副教授,主要从事混凝土结构及抗震研究.E-mail:yangkun8224@126.com 通信作者:林 琦(1995-),男,硕士研究生,主要从事约束混凝土及抗震设计.E-mail:932992702@qq.com

更新日期/Last Update: 2020-12-20