节点刚度对铝合金板式节点网壳稳定性能的影响  

Influence of Joint Stiffness on Stability of Latticed Shells with Aluminum Alloy Gusset Joints

作　　者：熊哲[1] 郭小农[1] 罗永峰[1] 徐晗 

机构地区：[1]同济大学建筑工程系,上海200092 [2]中天建设集团浙江钢构有限公司,杭州310008

出　　处：《天津大学学报（自然科学与工程技术版）》2015年第B07期39-45,共7页Journal of Tianjin University：Science and Technology

基　　金：国家自然科学基金资助项目(50908168);国家自然科学基金面上项目(51478335)

摘　　要：本文提出了考虑铝合金板式节点半刚性的杆件单元力学模型,建立了考虑铝合金板式节点试验弯矩-转角曲线关系的网壳结构数值模型,并通过数值算例进行验证.数值计算结果表明,铝合金板式节点半刚性特性显著降低了网壳结构的承载力.进一步的参数分析表明,结构跨度对网壳稳定承载力的影响最大,荷载分布模式和支撑条件对网壳稳定承载力的影响较小.Based on the semi-rigid behavior of aluminum alloy gusset joint, the corresponding mechanical model of member element is developed. With the experimental bending moment-rotation curve of joint being taken into consid- eration, numerical models of latticed shells are established, and they are verified by numerical examples. It is ob- served that the semi-rigid behavior of aluminum alloy gusset joints reduce the bearing-capacity of latticed shells sig- nificantly. Parametric studies further indicate that span is a major influence factor, and load distribution and support are minor factors.

关 键 词：铝合金板式节点 节点刚度 杆件单元 有限元模型 网壳 承载力 

分 类 号：TU395[建筑科学—结构工程]