多排组合剪力连接件承载力有限元分析
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作者单位:

[1.中国市政工程华北设计研究总院有限公司, 天津市300074;

作者简介:

张成(1990—), 男, 本科, 工程师, 从事桥梁结构设计工作。

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中图分类号:

TU398 +.9

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Finite Element Analysis on Bearing Capacity of Multi-row Combined Shearing Force Connector
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    摘要:

    为研究多排组合剪力连接件栓钉直径、贯通钢筋直径、开孔孔径、开孔孔数对抗剪承载力和荷载-滑移曲线的影响,使用ABAQUS软件建立组合剪力连接件模型,通过与现有试验对比验证其可行性。在此基础上,建立多排组合剪力连接件模型进行参数分析,结果表明:增加开孔孔数、开孔直径、贯通钢筋直径、栓钉直径均可有效提高组合剪力连接件的抗剪承载力。其中,开孔孔数在4以下时,各孔之间不会互相影响,承载力随孔数线性增加;贯通钢筋直径在16 mm以下时,对组合剪力连接件的承载力影响较小,当直径从16 mm增加至20 mm时,构件承载力有明显提高;栓钉直径与承载能力之间并不是线性增加关系。依据叠加原理,建立了多排组合剪力连接件承载力计算公式,其计算值与数值计算结果吻合良好。

    Abstract:

    In order to study the influences of stud diameter, cut-through rebar diameter, holing aperture and hole number of multi-row combined shearing force connector on the anti-shear bearing capacity and the load-slippage curve, ABAQUS software is used to establish the combined shearing force connector model to compare and validate its feasibility with the existing tests. On this basis, the multi-row combined shearing force connector model is established to carry out the parameter analysis. The result shows that the increment of hole number, holing diameter, cut-through rebar diameter and stud diameter can effectively improve the anti-shear bearing capacity of the combined shearing force connector. In which, if the hole number is below 4, there is no interaction between various holes, and the bearing capacity increases linearly with the number of holes. The diameter of cut-through rebar lower than 16 mm has little influence on the bearing capacity of combined shearing force connector. When its diameter increases from 16 mm to 20 mm, the bearing capacity of component is obviously improved. There is no relationship of linear increment between the stud diameter and bearing capacity. Based on the superposition principle the computational formula of bearing capacity for multi-row combined shearing force connector is established. The calculated values are in good agreement with the numerical calculation results.

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  • 收稿日期:2021-05-25
  • 最后修改日期:2021-07-15
  • 录用日期:2021-07-28
  • 在线发布日期: 2022-03-07
  • 出版日期: 2021-03-15
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