钢筋混凝土双向偏压异形柱构件非线性分析  

A New Method for the Nonlinear Analysis of Biaxial-loaded RC Special-shaped Columns

作　　者：何放龙[1] 张作鹏[1] 樊光发[1] 

机构地区：[1]湖南大学结构工程研究所,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2005年第4期1-5,共5页Journal of Hunan University:Natural Sciences

基　　金：湖南省建设厅科技项目资助(湘建2002-576-50)

摘　　要：基于一种合理的钢筋和混凝土本构模型,以x,y方向的曲率和截面形心应变为参数,利用数值方法对钢筋混凝土异形柱构件进行非线性全过程分析,得到了弯矩-曲率全曲线(N-M-φ全曲线).在得到N-M-φ全曲线基础上形成钢筋混凝土异形柱非线性分析的基本方程.通过与一般数值分析方法得到的异形柱N-M-φ全曲线进行对比,两者计算结果吻合较好,但该方法概念更加清晰.该研究成果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 between stress and strain tor steel and concrete, using tne curvature in the x direction, the y direction, and the strain in the sectional center of the form figure as parameters,the nonlinear analysis process was carried out in the method of numerical analysis for Reinforced Concrete（RC）special-shaped columns, and the whole curve（N-M-φ curve） of the relation between moment and curvature was obtained. The curve was consistent with the curve obtained in the normal numerical method. On the basis of the N-M-φ curve, the primary equation was achieved for the nonlinear analysis of RC special-shaped columns, and the result was also used in the whole process analysis of the nonlinear finite element for the RC special-shaped columns.

关 键 词：钢筋混凝土 抗弯刚度 异形柱 有限元 

分 类 号：TU375.4[建筑科学—结构工程]