异形柱非线性空间杆单元刚度矩阵的推导  

Deduction of nonlinear bar-unit stiffness matrix on special-shaped columns

作　　者：张作鹏[1] 卢耀明[2] 刘迪清[2] 

机构地区：[1]广州市市政工程设计研究院,广东广州510060 [2]广深铁路股份有限公司深土公司,广东深圳518020

出　　处：《山西建筑》2006年第13期52-55,共4页Shanxi Architecture

摘　　要：基于一种合理的异形柱截面N—M—φ关系力学模型,用空间杆单元作为基本单元,利用实际刚度法推导出异形柱非线性的单元刚度矩阵,所得到的非线性单元刚度矩阵可应用于钢筋混凝土异形柱的非线性有限元全过程分析。Based on the reasonable relation of sectional N-M-φ of special shaped columns, using the basic space bar-unit, the nonlinear unit stiffness matrix is deduced by the method of factual stiffness. The stiffness matrix contain the effect on the physical nonlinearity and geometric nonlinearity. The result in the paper was also used in the analysis of the nonlinear finite element whole process for the RC special shaped columns.

关 键 词：异形柱 抗弯刚度 非线性 有限元 

分 类 号：TU318[建筑科学—结构工程]