反复变动轴力作用下钢柱的数值分析模型  

A Numerical Analysis Model for Steel Columns Subjected to Cyclic Varying Axial Loads

作　　者：陈以一[1] 沈祖炎[1] 大井谦一[1] 高梨晃一 

机构地区：[1]同济大学结构工程学院,东京大学生产技术研究所

出　　处：《同济大学学报（自然科学版）》1994年第4期499-504,共6页Journal of Tongji University:Natural Science

摘　　要：当承受水平地震荷载时，高层框架结构的低层柱子通常受到困倾覆力矩而引起的反复变动轴力．文中提出一弹塑性数值分析模型以考虑变动轴力对柱子抗育强度的影响，并提出单轴移动骨架式恢复为模式来表现钢柱的恢复力特性．通过荷载试验结果对这一数值分析模型进行了检验．The columns located at the lower stories of a tall frame structure are usually subjected to cyclic varying axial forces dub to overturning when the frame resists horizontal loads caused by earthquake ground motions. A numerical analysis model is proposed in this paper to describe the behavior of such kind of columns. The influence of the varying axial force on the fie-cural resistance of the column is considered. A uniaxial hysteresis rule called 'shift skeleton model' is proposed, too, and the hysteresis behaviors of the column can be simulated well by the model. Compared with the loading test results, the validity of this model is checked.

关 键 词：高层建筑 钢柱 变动轴力 数值分析型 弹性分析 

分 类 号：TU973.25[建筑科学—结构工程]