半刚性连接对有侧移刚架稳定性的影响  

THE EFFECT OF SEMI-RIGID JOINTS ON THE STABILITY OF SWAY BUCKLING FRAME

作　　者：杨翼宾[1] 于远征[2] 董启明[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240 [2]中船第九设计研究院工程有限公司,上海200240

出　　处：《低温建筑技术》2010年第5期60-62,共3页Low Temperature Architecture Technology

摘　　要：利用半刚性连接的转角位移方程,使用位移法推导了单层单跨刚架发生有侧移失稳时的稳定承载力公式。数值分析结果表明,当节点刚度相对较小的时候,刚架的稳定承载性能受节点刚度的影响而折减很大:当节点刚度与梁线刚度之比等于5时,刚架的屈曲荷载仅为柱两端节点均为刚接情况下,刚架屈曲荷载的75%～95%。由此可见,在刚架的稳定分析和设计中,应考虑半刚性连接对框架柱的不利影响。文章最后给出了设计建议。Using the displacement method, the subsequent study derived the rigid-end sway frame stabili- ty capacity formula. The numberical analyze shows that when the joint stiffness is relatively small, the sway frame stability capacity could be reduced greatly： When the joint stiffness is 5 times as the beam linear stiffness, the buckling load is 75 % - 95 % compared to the buckling load when the the joints are rigid. Thus, it is concluded that the effect of the semi-rigid connection should be taken into account in the stability analysis and design of the steel frames. Design suggestions were given in the end.

关 键 词：半刚性节点 有侧移刚架 稳定分析 

分 类 号：TU392[建筑科学—结构工程]