装配式钢结构梁柱内套筒组合螺栓连接节点力学性能研究

发布时间：2018-09-18 13:04

【摘要】：为深入研究装配式梁柱内套筒组合螺栓连接节点力学性能,采用理论分析方法推导了组合螺栓连接节点的初始转动刚度计算公式,对7个节点试件建立了ANSYS有限元模型进行单向静力加载数值模拟分析.研究了内套筒厚度、端板厚度、加强肋板、制作误差等对节点力学性能的影响.研究结果表明,节点刚度随内套筒厚度增加而增大,增加内套筒厚度是提高节点刚度的有效手段,但内套筒厚度过大不够经济,建议实际工程中,内套筒厚度大于柱壁厚度2,mm;内套筒与柱壁安装间隙过大会显著降低节点刚度,应尽可能减小制作误差,将内套筒与柱壁安装总间隙控制在4,mm之内;端板厚度对节点初始转动刚度影响不明显;节点初始转动刚度理论计算公式与有限元数值计算结果取得了较好的一致性.本文研究内容可为装配式钢结构梁柱连接节点的理论分析和工程应用提供参考.
[Abstract]:In order to deeply study the mechanical properties of assembled Liang Zhu inner sleeve composite bolt connection joint, the formula of initial rotational stiffness of composite bolt connection joint is derived by theoretical analysis method. The ANSYS finite element model was established for seven nodal specimens and the unidirectional static loading numerical simulation analysis was carried out. The effects of inner sleeve thickness, end plate thickness, stiffened ribbed plate and fabrication error on the mechanical properties of joints are studied. The results show that the stiffness of the joints increases with the thickness of the inner sleeve. Increasing the thickness of the inner sleeve is an effective means to improve the stiffness of the joints, but the thickness of the inner sleeve is not economical enough. The thickness of the inner sleeve is more than 2 mm of the column wall, the joint stiffness is significantly reduced when the installation gap between the inner sleeve and the column wall is too large, the manufacturing error should be reduced as far as possible, and the total gap between the inner sleeve and the column wall should be controlled within 4mm. The effect of the thickness of the end plate on the initial rotational stiffness of the joint is not obvious, and the theoretical formula of the initial rotational stiffness of the node is in good agreement with the numerical results of the finite element method. This paper can provide a reference for the theoretical analysis and engineering application of Liang Zhu connection of fabricated steel structure.
【作者单位】：青岛理工大学土木工程学院;
【基金】：国家自然科学基金资助项目(51508290) 青岛市建设科技计划资助项目(JK2014-8)
【分类号】：TU391

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