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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05期

页码:

142-150

栏目:

出版日期:

2020-09-30

文章信息/Info

Title:

Shear Behavior of Multi-ribbed Composite Shear Walls with RPC Filled Steel Tubular Columns

文章编号:

1673-2049(2020)05-0142-09

作者:

朱 倩,蒋永杰,岳旭鹏,赵均海

长安大学 建筑工程学院,陕西 西安 710061

Author(s):

ZHU Qian, JIANG Yong-jie, YUE Xu-peng, ZHAO Jun-hai

School of Civil Engineering, Chang’an University, Xi’an 710061, Shaanxi, China

关键词:

统一强度理论;  钢管RPC柱;  密肋复合墙体;  抗剪承载力;  数值模拟

Keywords:

unified strength theory;  RPC filled steel tubular column;  multi-ribbed composite shear wall;  shear capacity;  numerical simulation

分类号:

TU398.2

DOI:

10.19815/j.jace.2020.05015

文献标志码:

A

摘要:

为研究新型钢管活性粉末混凝土(RPC)边框密肋复合剪力墙的抗剪性能,基于统一强度理论和斜压杆计算模型,考虑材料的中间主应力、拉压异性效应以及边框架与等效弹性板之间剪应力等因素的影响,建立了此类组合墙体的抗剪承载力计算公式。利用ABAQUS有限元软件,对不同混凝土强度、轴压比、钢管屈服强度的钢管RPC边框密肋复合剪力墙进行水平单调加载,将抗剪承载力数值模拟结果与理论计算结果进行对比分析。结果表明:抗剪承载力计算值与有限元值吻合较好,验证了理论计算方法的准确性与有限元模型的可靠性; 随着密肋复合墙板肋格RPC强度等级的提高,剪力墙抗剪承载力显著提高; 随着轴压比的增加,抗剪承载力先增加后下降,且延性性能下降; 提高边框柱钢管屈服强度,剪力墙承载力略有增加,效果并不显著,但可以改善构件延性性能; 提出的抗剪承载力计算公式为该新型复合剪力墙的发展提供了理论基础。

Abstract:

In order to study the shear behavior of a new type of multi-ribbed composite shear walls with reactive powder concrete(RPC)filled steel tubular columns, the shear bearing capacity formulas for such composite walls were established based on both the unified strength theory and the calculation model of oblique compression strut. The intermediate principal stress, tensile-compressive strength difference and shear strength between the fringe frame and equivalent elastic plate were taken into account. Moreover, ABAQUS software was used to conduct horizontal monotonic loading on the composite shear walls with consideration of different RPC strengths, axial compression ratios and steel tubular yield strengths. The numerical simulation results and theoretical calculation results of shear capacity were compared and analyzed. The results show that the numerical simulation results are in better agreement with the theoretical calculated values, which verifies the accuracy of the theoretical method and the reliability of finite element model. Meanwhile, the shear capacity significantly improves with the increase of rib RPC strength. By increasing the axial compression ratio, the shear capacity increases first and then decreases, and ductility performance becomes worse. The shear capacity slightly enhances with increasing the yield strength of frame-column steel tube, however it can improve the ductility of the composite wall. The proposed shear bearing capacity formulas provide a theoretical foundation for the development of this new composite wall.

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备注/Memo

备注/Memo:

收稿日期:2020-05-14
基金项目:国家自然科学基金项目(51878056); 陕西省科技计划-社会发展领域项目(2019SF-256);
陕西省自然科学基础研究计划项目(2018JQ5023); 长安大学大学生创新创业训练项目(S202010710122);
中央高校基本科研业务费专项资金项目(300102289105,300102280203)
作者简介:朱 倩(1987-),女,山东菏泽人,讲师,工学博士,E-mail:zhuqianchd@126.com。

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更新日期/Last Update: 2020-10-15