摘要
本文在二阶梁柱单元几何非线性分析公式的基础上，推导建立了三阶梁柱单元几何非线性和材料非线性有限单元分析公式．所得到的考虑大位移影响的三阶是小位移刚度矩阵、二阶和其它几个矩阵的简单叠加．文中分析了二阶与三阶单元刚度矩阵分析结果的差别．并把理论分析计算结果与实验结果进行比较，两者吻合很好．
On the basis of the. formulations of the second-order reinforced concrete column element this paper derives the third-orde finite element formulations of the winforced concrete beam-column elements with arbitrary cross-section. The thed-order elemental sitffness matrices are the simple addition of the small-displacement stiffness matrices, the second effect matrix and a few other component matrices. The difference betweeen the second-order and the third-order effcts is analyzed. The theoretical re sults comepond wad with the experimental data.
出处
《哈尔滨建筑大学学报》
1995年第6期26-32,共7页
Journal of Harbin University of Civil Engineering and Architecture
基金
国家自然科学基金
关键词
钢筋混凝土
梁
柱
几何非线性
三阶效应
reinforced concrete
material nonlinerity, geometrice nonlinearity,se cond-order effects,third-order effects
