节点板域厚度对钢框架静动力反应的影响

水平荷载作用下，节点板域的剪切变形降低钢框架结构的侧向刚度，使结构的水平位移及层间位移增大。对各种节点板域厚度的钢框架进行了水平静动力分析，结果显示，适当增加节点板域的厚度可有效地减少其不利影响。在强烈地震作用下节点板域较早地屈服，使结构层间位移过大增加，可能引起结构失效，工程中应高度重视。

The analysis of the thickness of joint panels effect on steel frame behavior under static or dynamic loading

When the steel frame is subject to horizontal loads,the shear deforomation occurs in joint panels and the horizontal stiffness gets lower,and the lateral deformation as well as angular displacement of the story will become larger. This paper analyzes the behavior of steel frames with different thickness of joint panel under the static or dynamic loading. The calculating results indicate that the lateral deformation and angular displacement of the story can be reduced by increasing the thickness of joint panels and we should pay attention to that when a veolent earthquake occurs and that most joint panels of the frame have been in the elastic - plastic states and the angular displacement of the story will become even larger,which may make the steel frame failure.