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

卷:

40卷

期数:

2023年04期

页码:

97-106

栏目:

建筑结构

出版日期:

2023-07-10

文章信息/Info

Title:

Comparative study on shear capacity calculation method for shear walls with CFST columns

文章编号:

1673-2049(2023)04-0097-10

作者:

朱 倩,贾新宇,刘金烨,泥朝阳,赵均海

(长安大学 建筑工程学院,陕西 西安 710061)

Author(s):

ZHU Qian, JIA Xinyu, LIU Jinye, NI Zhaoyang, ZHAO Junhai

(School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China)

关键词:

剪力墙;  钢管混凝土边框柱;  受剪承载力;  软化拉压杆模型;  统一强度理论

Keywords:

shear wall;  CFST column;  shear capacity;  softened strut-and-tie model;  unified strength theory

分类号:

TU398.2

DOI:

10.19815/j.jace.2022.04045

文献标志码:

A

摘要:

为研究不同力学模型在钢管混凝土边框剪力墙受剪承载力计算中的适用性,总结了国内外学者推导的经验公式和理论模型,建立了基于软化拉压杆模型、统一强度理论和国内外相关规范的承载力计算方法,对比分析了理论力学模型和多国规范在预测此类组合墙受剪承载力上的表现,探讨了轴压比、高宽比、宽厚比和材料性能等对计算结果误差的影响; 最后结合已有试验数据,验证了各模型的计算精度和适用性。结果表明:由于未考虑构件各部分所分担的剪力,多数规范模型理论计算结果普遍低于试验值,而统一强度理论与软化拉压杆模型计算结果相对准确; 软化拉压杆模型计算方法能充分考虑墙体各部分对承载力的贡献,计算偏差基本控制在20%以内; 在各项参数变动的前提下,软化拉压杆模型更能准确预测钢管混凝土边框剪力墙的受剪承载力,计算值与试验值吻合良好,能合理反映钢管混凝土边框剪力墙的受剪机理,为其承载力计算方法的优化设计提供理论依据。

Abstract:

In order to study the applicability of different mechanical models in calculating the shear capacity of shear walls with concrete-filled steel tubular(CFST)columns, the empirical formulas and theoretical models deduced by domestic and foreign scholars were summarized. Various calculation methods were established based on the softened strut-and-tie model, unified strength theory and building codes at home and abroad. Then the performance of theoretical models and relevant building codes in predicting the shear capacity of such composite walls were compared and analyzed. Parametric studies were carried out to investigate the effects of axial compression ratio, aspect ratio, width thickness ratio and material properties on the calculation results. Finally, the accuracy and applicability of various mechanical models were validated by comparing with experimental data. The results show that the design methods of most standard models are generally lower than the experimental values, while the unified strength theory and the softened strut-and-tie model are relatively accurate. Meanwhile, the proposed formulas with softened strut-and-tie model not only can fully consider the contribution of each wall component, but also the calculation error is basically controlled within 20%. Moreover, under the premise of changing individual parameter, the calculated values by the softened strut-and-tie model are in good agreement with the test data. The analysis results can reasonably describe the shear mechanism and provide a theoretical basis for the optimum design of shear walls with CFST columns.

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相似文献/References:

[1]马恺泽,郭 辉,韩晓飞,等.对抗震规范中基于性能设计方法的研究[J].建筑科学与工程学报,2013,30(03):56.
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　FAN Zhong,LIU Chang,WU Hui.Research on Seismic Behavior of Multi-coupling Beams in Shear Wall Structure[J].Journal of Architecture and Civil Engineering,2014,31(04):125.
[3]黄 靓,王启明,陈 伟,等.低轴压比下自保温无砂浆配筋砌体剪力墙抗震性能[J].建筑科学与工程学报,2018,35(01):51.
　HUANG Liang,WANG Qi-ming,CHEN Wei,et al.Low Axial Compression Ratio on Seismic Behavior of Self-insulation Mortarless Reinforced Masonry Shear Walls[J].Journal of Architecture and Civil Engineering,2018,35(04):51.
[4]赵 军,沈富强,司晨哲,等.CFRP筋/钢筋混凝土剪力墙抗震性能试验[J].建筑科学与工程学报,2018,35(05):46.
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[5]雷 拓,刘 宜,李 坤,等.剪力墙结构置换加固应力重分布[J].建筑科学与工程学报,2020,37(05):132.[doi:10.19815/j.jace.2020.05026]
　LEI Tuo,LIU Yi,LI Kun,et al.Stress Redistribution of Shear Wall Structure with Replacement Reinforcement[J].Journal of Architecture and Civil Engineering,2020,37(04):132.[doi:10.19815/j.jace.2020.05026]

备注/Memo

备注/Memo:

收稿日期:2022-04-14
基金项目:国家自然科学基金项目(51878056); 陕西省自然科学基础研究计划项目(2021JM-170,2021JM-165,2021JM-177); 长安大学国际教育专业建设项目(300108211034,300108211044,20211824)
作者简介:朱 倩(1987-),女,工学博士,副教授,硕士生导师,E-mail:zhuqianchd@126.com。

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更新日期/Last Update: 2023-07-01