摘要
为研究门式刚架端板斜放连接节点的连接性能,对6个不同构造端板连接模型,在恒定竖向荷载和循环水平荷载作用下的抗侧移刚度和承载能力等性能进行了非线性有限元分析,研究其端板厚度、螺栓布置以及螺栓直径等参数对节点连接的承载能力和刚度的影响。结果表明,在循环荷载作用下,滞回曲线呈平行四边形,构件梁端的极限承载弯矩是设计弯矩值的1.68-1.74倍,构件梁端先于柱端进入塑性。门式刚架结构的刚度退化较慢,结构具有足够的安全系数。
In order to study the connection properties of tilted end-plate in portal frame,the nonlinear finite element analyses of six different models are carried out under the constant vertical load and cyclic lateral load.The main factors influencing the connection＇s loading capacity and stiffness are analyzed,such as the end plate thickness,bolt diameter,the arrangement of bolts,and so on.The results show that this portal frame has enough safety factor,and based on the analysis results,some suggestions in portal frame design are put forward.
出处
《水利与建筑工程学报》
2010年第3期34-37,共4页
Journal of Water Resources and Architectural Engineering
基金
科技部科研院所技术开发研究专项资金项目(NCSTE-2007-JKZX-258)
关键词
门式刚架
端板连接
滞回性能
循环荷载
portal frame
end plate connection
hysteretic behavior
cyclic load
