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Extended End Plate Long Bolted Joint Using Cold Formed Steel Hollow and Concrete Filled Column
International Journal of Steel Structures ( IF 1.1 ) Pub Date : 2021-02-04 , DOI: 10.1007/s13296-021-00460-7
M. SenthilPandian , M. Helen Santhi , Baskar Gopalan

The objective of this study is to investigate the moment-rotation behaviour of the extended end plate long bolted moment connection using numerical, experimental and component method approaches. Totally thirty six models of the cold formed steel beam-column (hollow and concrete filled column) connection with different arrangement of long bolts are modeled and analysed using the finite element software ANSYS APDL. The cross-sectional dimension of the column and beam section is 50 mm × 100 mm × 2 mm. The length of column and beam section is 900 mm and 700 mm, respectively. The end plate size is 100 mm × 150 mm × 2.5 mm/4.0 mm and 6 mm diameter long bolts are used to connect the members in the joint. It is observed that the increase in the number of bolts increases the initial rotational stiffness and design moment capacity of the connections significantly. Substantial enhancement in the initial rotational stiffness and design moment capacity of the connection is achieved by using concrete fill in the column. From the experimental validation, it is noticed that the finite element models satisfactorily predict the actual behaviour of the extended end plate bolted moment connections. Also the initial rotational stiffness of the connections is determined based on the component method as specified in Euro Code 3(BS EN 1993-1-1 2005, BS EN 1993-1-8 2005) and the results indicate that the predictions based on the proposed analytical model agree well with the simulation model.



中文翻译:

冷弯型钢空心柱和混凝土填充柱加长端板长螺栓连接

这项研究的目的是使用数值,实验和分量方法研究延长端板长螺栓力矩连接的力矩-旋转行为。使用有限元软件ANSYS APDL对总共36种具有不同长螺栓布置的冷弯钢梁-柱(空心和混凝土填充柱)连接模型进行了建模和分析。立柱和横梁截面的横截面尺寸为50 mm×100 mm×2 mm。立柱和横梁的长度分别为900 mm和700 mm。端板尺寸为100 mm×150 mm×2.5 mm / 4.0 mm,并使用直径6 mm的长螺栓连接接头中的构件。可以看出,螺栓数量的增加显着增加了连接的初始旋转刚度和设计力矩能力。通过在柱中填充混凝土,可以大大提高连接的初始旋转刚度和设计力矩。通过实验验证,注意到有限元模型可以令人满意地预测延伸端板螺栓力矩连接的实际性能。此外,还根据欧洲法规3(BS EN 1993-1-1 2005,BS EN 1993-1-8 2005)中指定的构件方法确定了连接件的初始旋转刚度,结果表明,基于提出的解析模型与仿真模型吻合良好。通过在柱中填充混凝土,可以大大提高连接的初始旋转刚度和设计力矩。通过实验验证,注意到有限元模型可以令人满意地预测延伸端板螺栓力矩连接的实际性能。此外,还根据欧洲规范3(BS EN 1993-1-1 2005,BS EN 1993-1-8 2005)中规定的构件方法确定了连接件的初始旋转刚度,结果表明,基于提出的解析模型与仿真模型吻合良好。通过在柱中填充混凝土,可以大大提高连接的初始旋转刚度和设计力矩。通过实验验证,注意到有限元模型可以令人满意地预测延伸端板螺栓力矩连接的实际性能。此外,还根据欧洲法规3(BS EN 1993-1-1 2005,BS EN 1993-1-8 2005)中指定的构件方法确定了连接件的初始旋转刚度,结果表明,基于提出的解析模型与仿真模型吻合良好。注意,有限元模型可以令人满意地预测延伸端板螺栓力矩连接的实际性能。此外,还根据欧洲法规3(BS EN 1993-1-1 2005,BS EN 1993-1-8 2005)中指定的构件方法确定了连接件的初始旋转刚度,结果表明,基于提出的解析模型与仿真模型吻合良好。注意,有限元模型可以令人满意地预测延伸端板螺栓力矩连接的实际性能。此外,还根据欧洲规范3(BS EN 1993-1-1 2005,BS EN 1993-1-8 2005)中规定的构件方法确定了连接件的初始旋转刚度,结果表明,基于提出的解析模型与仿真模型吻合良好。

更新日期:2021-02-04
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