薄膜元理论在钢筋混凝土纯扭构件计算中的应用  

The Application of Membrane-element Theory in the Calculation for Pure Torsion Member

作　　者：闫肖武[1] 张三柱[1] 

机构地区：[1]淮海工学院土木工程系,江苏连云港222005

出　　处：《淮海工学院学报（自然科学版）》2003年第4期63-66,共4页Journal of Huaihai Institute of Technology:Natural Sciences Edition

基　　金：淮海工学院自然科学科研课题 ( Z2 0 0 3 0 18)

摘　　要：对薄膜元理论在受扭构件中的应用进行了探讨 ,以软化变角空间桁架理论为基础 ,考虑混凝土的“软化效应”,通过建立应力平衡方程、应变协调方程、本构关系方程 ,用反复迭代的数值分析方法 ,模拟构件受力的全过程。用此方法对纯扭构件作了全过程分析 ,对构件的破坏荷载和变形进行了计算 。The application of membrane-element theory in the calculation for pure torsion member is studied in this paper on the basis of variable-angle space truss theory. Concrete softening is taken into account, the stress equilibrium equations, strain compatibility equations and constitutive laws equations for concrete and steel are established, and the whole-process of loaded member is simulated with iterative numerical analysis method. By this method, the whole-process analysis of pure-torsion members is done, and the capacity and deformation are calculated. It is shown that theoretical analysis conforms well to experimental results.

关 键 词：薄膜元理论 钢筋混凝土 软化变角空间桁架模型 纯扭构件 

分 类 号：TU375.5[建筑科学—结构工程]