The shear strength, shear distortion, failure mode, and energy absorption performance of irregular circular and box-shaped tubular column panel zones (PZs) were investigated using experimental and analytical methods on the seven steel frame structures. The main parameters include the beam height ratio of left and right beams, the column cross-section, and the configuration of external diaphragm. The key variable, beam height ratio, can affect the PZ shear strength and energy absorption, but has little influence on the initial stiffness of the PZ; the PZ, PZ1, and PZ2, absorb energy together in the initial loading stages, as the load increases, most of the energy begins to be absorbed only by PZ1 which has the same height as the smaller beam, therefore, the design considering only PZ1 is incomplete; excessive PZ shear deformation can cause cracking of the weld root which adversely affects the structure; the configuration of external diaphragm should avoid stress concentration which can cause cracking of the base metal. The chosen analysis methods are capable of simulating the shear strength and failure modes of the PZ obtained in experimental results with acceptable accuracy.

利用实验和分析方法对七个钢框架结构进行了研究，研究了不规则圆形和箱形管状柱面板区域（PZs）的剪切强度，剪切变形，破坏模式和能量吸收性能。主要参数包括左右光束的光束高度比，立柱横截面以及外部光阑的配置。关键变量梁高比可以影响PZ的剪切强度和能量吸收，但对PZ的初始刚度影响不大。PZ，PZ1和PZ2在初始加载阶段一起吸收能量，随着负载的增加，大部分能量开始仅被与较小光束高度相同的PZ1吸收，因此，设计中仅考虑PZ1不完整；PZ剪切变形过大会导致焊缝根部开裂，从而对结构产生不利影响；外膜片的配置应避免应力集中，因为应力集中会导致母材开裂。选择的分析方法能够以可接受的精度模拟在实验结果中获得的PZ的剪切强度和破坏模式。