不同加载形式下K型节点受力分析

CHS K-joints stress analysis under different loading form

现代空间结构的快速发展,造型的复杂化使结构的受力形式越来越复杂.因此对结构中节点的充分研究显得非常必要。节点的静力性能研究已经很充分,为了更好了解K型节点在往复荷载作用下的受力性能,通过有限元比较分析主管和支管分别在往复荷载作用下的受力性能以及破坏特征。最终得出主管和支管受力情况下的极限承载力基本一致,支管受力情况下的延性较好。

It is necessary to make an adequate research on the structure of nodes for the rapid development of modern spatial structure and complicated shape are making the structure more complex. Performance of static nodes is adequate. To better understand the mechanical properties of K-type nodes under reciprocating loads, and the performance of the force under cyclic loads and failure characteristics were analyzed by FEM. The ultimate bearing capacity and the branch under the forces are basically the same, the force ductility manifold case is better.