王文杰, 邵永波, 夏辉. 环口板加固T型方钢管节点在轴压作用下极限承载力研究[J]. 工程力学, 2012, 29(6): 138-145. DOI: 10.6052/j.issn.1000-4750.2010.09.0635
引用本文: 王文杰, 邵永波, 夏辉. 环口板加固T型方钢管节点在轴压作用下极限承载力研究[J]. 工程力学, 2012, 29(6): 138-145. DOI: 10.6052/j.issn.1000-4750.2010.09.0635
WANG Wen-jie, SHAO Yong-bo, XIA Hui. RESEARCH ON THE STATIC STRENGTH OF SQUARE TUBULAR T-JOINTS REINFORCED WITH COLLAR PLATE UNDER AXIAL COMPRESSION[J]. Engineering Mechanics, 2012, 29(6): 138-145. DOI: 10.6052/j.issn.1000-4750.2010.09.0635
Citation: WANG Wen-jie, SHAO Yong-bo, XIA Hui. RESEARCH ON THE STATIC STRENGTH OF SQUARE TUBULAR T-JOINTS REINFORCED WITH COLLAR PLATE UNDER AXIAL COMPRESSION[J]. Engineering Mechanics, 2012, 29(6): 138-145. DOI: 10.6052/j.issn.1000-4750.2010.09.0635

环口板加固T型方钢管节点在轴压作用下极限承载力研究

RESEARCH ON THE STATIC STRENGTH OF SQUARE TUBULAR T-JOINTS REINFORCED WITH COLLAR PLATE UNDER AXIAL COMPRESSION

  • 摘要: 从理论分析、试验测试及有限元模拟三个方面对环口板加固T型方钢管节点的极限承载力进行了初步的研究工作。首先基于塑性铰线模型推导出了环口板加固T型方钢管节的极限承载力计算公式。然后对2 个环口板加固T型方钢管节点试件及2 个对应的未加固节点试件进行了在轴压作用下的承载力试验测试,结果表明环口板可以明显提高管节点的极限承载力。通过有限元法对试验试件进行了数值模拟,其结果与试验结果吻合较好,因而使用有限元法对9 个不同节点尺寸的加固模型及对应的9 个未加固节点模型进行了模拟,结果发现加固后节点的承载力均大于未加固节点的承载力。环口板加固T型方钢管节点的极限承载力计算公式在环口板有足够刚度,节点破坏模式为由局部屈曲导致形成塑性铰线破坏时可以获得较为精确的结果。

     

    Abstract: The fundamental research work on the square tubular T-joints reinforced with collar plate is carried out incluing theoretical analysis, experimental tests and finite element simulation. Firstly, the equation for predicting the static strength of a collar plate reinforced square tubular T-joint under axial compression loading is deduced based on the yield line model. Thereafter, two collar plate reinforced square tubular T-joints and two corresponding unreinforced T-joints are analyzed through experimental tests and finite element simulation. It is found that the collar plate can improve the bearing capacity of the T-joints significantly. Additionally, a total of 18 square tubular T-joints are analyzed by using the finite element method. The results show that the static strength of collar plate reinforced T-joints, compared with the corresponding unreinforced T-joints, has a significant improvement, and the equation for predicting the static strength of a collar plate reinforced square tubular T-joint is reasonably accurate when the collar plate has enough stiffness and the failure mode is mainly local buckling.

     

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