用双模量理论研究钢管混凝土柱的临界载荷  

Critical Load of Concrete-Filled Steel Tubular (CFST) Columns Based on Double Modulus Theory

作　　者：吴晓[1] 肖珍 李政 赵恒 吴桂华 Wu Xiao;Xiao Zhen;Li Zheng;Zhao Heng;Wu Guihua(College of Mechanical Engineering,Hunan University of Arts and Science,Changde415000,Hunan,China;School of Intelligent Building,Changde College,Changde415000,Hunan,China)

机构地区：[1]湖南文理学院机械工程学院,湖南常德415000 [2]常德学院智能建筑学院,湖南常德415000

出　　处：《工程与试验》2023年第3期4-5,20,共3页Engineering and Test

基　　金：湖南省教育厅重点项目(19B383)。

摘　　要：采用双模量弹性理论研究了钢管混凝土长柱的弹性稳定问题。利用钢管混凝土柱的轴向静力平衡方程确定中性轴位置,再利用钢管混凝土柱弯矩平衡方程得到弯曲微分方程,即可求得钢管混凝土长柱的临界载荷。算例分析表明,采用双模量弹性理论方法得到的计算结果,比有关文献方法的计算结果更接近试验结果。The elastic stability of concrete-filled steel tubular(CFST)columns is researched by using the double modulus elastic theory.First,the position of the neutral axis is determined by using the axial static balance equation of CFST columns,and then the bending differential equation is obtained by using the moment balance equation.In this way,the critical load of CFST columns can be obtained.The results of numerical examples show that the results calculated by the double modulus elastic theory method are more close to the experimental results than those calculated by the literature method.

关 键 词：双模量 钢管混凝土柱 临界载荷 

分 类 号：TU311[建筑科学—结构工程]