申 林1   卢小松2    顾 强1

   （1 西安建筑科技大学建工系 710055； 2 中国西北电力设计院 西安 710030）

[提要]  对网架螺栓球节点中的锥头强度进行了弹塑性有限元分析，得出其应力分布、塑性区分布及极限承载力。并对锥头的结构特征进行分析，提出了设计建议。
[关键词]  网架 锥头 弹塑性

The finite element method program is used to analyze the elastic-plastic strength of cones in one domestic construction. The stress distribution, the development process of plastic zones with the raising of external force and the bearing capacity of the cones are calculated. At last, the structural characteristics of cones are analyzed and some suggestions are posed.
Keywords:  space truss; cone; elastic-plastic behaviour