Theoretical analysis of the mechanical behavior of double-ring joints under pure bending, bending-shear and eccentric loading conditions

Zhang Zhijie; Feng Ruoqiang; Chen Yao

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Theoretical analysis of the mechanical behavior of double-ring joints under pure bending, bending-shear and eccentric loading conditions

机译：纯弯曲，弯曲剪切和偏心装载条件下双环接头力学行为的理论分析

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Taking double-ring joint as research object, the mechanical performances under pure bending, bending-shear and eccentric loading conditions of the joints were studied in this paper. Double-ring joints with different structural parameters were analyzed using finite element analysis and theoretical derivation methods and combined with experimental results. The following conclusions were obtained: 1) under the pure bending condition, the spring model of the double-ring joint was established, and the theoretical calculation formulas of the ultimate bearing capacity and initial rotational stiffness were derived; 2) under the bending-shear condition, the accuracy of finite element analysis models was verified by comparing the numerical with experimental results. The mechanical properties of double-ring joints under the bending-shear condition were similar to those under the pure bending condition; 3) based on the full-section plasticity criterion, the relationship between ultimate bending moment ratio eta(N)(0) and axial force eccentricity delta was derived. With the exponential function for nonlinear fitting, the relationship between initial rotational stiffness ratio xi(N)(0) and axial force eccentricity delta was derived.

机译：采用双环关节作为研究对象，本文研究了关节纯弯曲，弯曲剪切和偏心装载条件下的机械性能。使用有限元分析和理论衍生方法分析具有不同结构参数的双环接头，并结合实验结果。获得以下结论：1）在纯弯曲条件下，建立了双环关节的弹簧模型，衍生出极限承载力和初始旋转刚度的理论计算公式; 2）在弯曲剪切条件下，通过将数值与实验结果进行比较来验证有限元分析模型的准确性。弯曲剪切条件下双环接头的机械性能与纯弯曲条件下的双环接头; 3）基于全节塑性准则，推导出极限弯矩比ETA（n）（0）和轴向力偏心三角阶段的关系。利用用于非线性拟合的指数函数，衍生初始旋转刚度比Xi（n）（0）和轴向力偏心δ之间的关系。

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来源
《Engineering Structures》 |2021年第1期|111854.1-111854.12|共12页
作者
Zhang Zhijie; Feng Ruoqiang; Chen Yao;
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作者单位

Southeast Univ Key Lab Concrete & Prestressed Concrete Struct Minist Educ Nanjing 211189 Jiangsu Peoples R China|Southeast Univ Sch Civil Engn Nanjing 211189 Jiangsu Peoples R China;

Southeast Univ Key Lab Concrete & Prestressed Concrete Struct Minist Educ Nanjing 211189 Jiangsu Peoples R China|Southeast Univ Sch Civil Engn Nanjing 211189 Jiangsu Peoples R China;

Dept Construct & Transportat Chengdu 610065 Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Assembly joints; Semi-rigid performances; Pure bending; Bending-shear; Eccentric force;

机译：装配接头;半刚性表演;纯弯曲;弯曲剪切;偏心力;

Theoretical analysis of the mechanical behavior of double-ring joints under pure bending, bending-shear and eccentric loading conditions

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