按三维弹性体建立的钢管混凝土轴压刚度  

THE COMPRESSIVE STIFFNESS OF CONCRETE-FILLED STEEL TUBE FOUNDED ON THREE-DIMENSION ELASTIC BODY

作　　者：陈波[1] 

机构地区：[1]兰州铁道学院土木建筑工程学院,甘肃兰州730070

出　　处：《甘肃科学学报》2003年第2期102-106,共5页Journal of Gansu Sciences

摘　　要：　钢管混凝土构件用约束效应系数来反映其组合作用时,可将其视为一种弹性体.根据此类构件的变形特点,按弹性体空间轴对称问题的处理方法,假定了一组试探位移函数,再利用变分原理推导出了圆钢管混凝土构件轴压刚度,结果令人满意.The axial compressive member of the concrete\|filled steel tube is considered to be an elastic body,as its composite effect can be reflected by an effective coefficient. So,a group of heuristic functions are assumed with regard to its deformed feature. The compressive stiffness,derived by using the variational principle and second Castingliano's theorem,shows that this result is satisfactory.

关 键 词：钢管混凝土构件 轴压刚度 位移函数 变分原理 

分 类 号：TU375[建筑科学—结构工程]