拆装式箱型房屋整体抗弯刚度研究

发布时间：2018-04-30 20:30

本文选题：拆装式箱型房屋 + 荷载-位移曲线　；参考：《钢结构》2016年12期

【摘要】：通过对拆装式箱型房屋进行底框结构竖向分级加载试验,分析了拆装式箱型房屋整体抗弯刚度和立柱与顶底框连接处的半刚性性能。试验表明:箱型房屋整体抗弯刚度较弱,螺栓受力性能对立柱与顶底框连接处的半刚性性能影响较大。建立立柱与顶底框连接处的力学模型,给出连接处初始转动刚度的计算方法,建立考虑半刚性的有限元模型,并与试验结果进行对比分析,结果表明:在线弹性阶段,有限元模型的荷载-位移曲线和试验结果吻合较好,证明建立力学模型的可靠性,同时基于有限元分析,考虑了不同连接刚度对结构整体抗弯刚度的影响。
[Abstract]:Through the vertical graded loading test on the bottom frame structure of the disassembly box house, the overall bending stiffness of the disassembly box house and the semi-rigid performance of the connection between the column and the top and bottom frame are analyzed. The experimental results show that the overall bending stiffness of box building is weak and the mechanical properties of bolts have a great influence on the semi-rigid performance of the connection between the column and the top and bottom frame. The mechanical model of the connection between the column and the top and bottom frame is established, the calculation method of the initial rotational stiffness of the connection is given, the finite element model considering the semi-rigidity is established, and the results are compared with the experimental results. The results show that: in the online elastic stage, The load-displacement curve of the finite element model is in good agreement with the experimental results, which proves the reliability of the mechanical model. Based on the finite element analysis, the influence of different connection stiffness on the overall flexural stiffness of the structure is considered.
【作者单位】：郑州大学土木工程学院;河南天丰节能板材科技股份有限公司;
【基金】：河南省高等学校重点科研项目(16A560010) 河南天丰节能板材科技股份有限公司项目
【分类号】：TU392.5

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