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对空间框架的基本单元——空心圆管状节点的行为进行了分析。为了获得最好的设计,从试验和理论上,对构成节点体系的不同元素进行了研究,以精确确定在外部荷载作用下的响应。借助原型试验,采用有限元方法,对不同变量理论分析的结果进行了验证。在三维空间中,对结构以及局部进行了数值分析:对于局部,研究分割开的单元;对于整体,研究“心”型节点的工作性能。由于构成节点的不同单元的接触和非线性行为,使得模拟的最大困难在螺栓节点上。最后,对类似结构计算的简化程序给出了建议,得到了结论。
The basic unit of the space frame, the behavior of hollow circular tubular joints, is analyzed. In order to obtain the best design, different elements that make up the nodal system have been experimentally and theoretically investigated to accurately determine the response under external loads. With the help of prototype test, the finite element method is used to verify the theoretical analysis of different variables. In three-dimensional space, the structure and local numerical analysis: For local, study the division of the unit; For the whole, Due to the contact and non-linear behavior of the different elements that make up the node, the biggest difficulty of the simulation is on the bolt node. Finally, some suggestions are given for the simplification of the calculation of similar structures and the conclusion is reached.