中部等截面轴心受压梭形钢管柱的弹性屈曲荷载  

Elastic buckling loads of shuttle tube steel columns with uniform cross section in the middle part under axial force

作　　者：郭彦林[1] 林冰[1,2] 

机构地区：[1]清华大学土木工程系,北京100084 [2]中国建筑工程总公司技术中心,北京101300

出　　处：《建筑结构》2009年第3期37-39,60,共4页Building Structure

摘　　要：利用有限单元法对无解析解的中部具有等截面部分的箱形管截面及圆管截面轴心受压梭形薄壁钢管柱的弹性屈曲荷载进行了数值计算,给出了适用于计算这类截面的轴心受压梭形钢管柱弹性屈曲荷载的拟合公式,并对9 742根这类柱子的弹性屈曲荷载用拟合公式和有限单元法的计算结果进行了对比。误差对比表明,拟合公式的计算结果与有限单元法计算结果的误差非常小,拟合公式具有足够的精度,为设计人员提供了一个简单可靠的计算公式。Elastic buckling loads of shuttle tube steel columns with uniform cross section in the middle part under the action of axial force is investigated by using the finite element method （FEM）. Based on the numerical results, formula which can calculate the elastic loads of this kind of columns is presented. Elastic buckling loads of 9 742 columns calculated by the formula and by the FEM respectively are compared, and results show that the formula is accurate enough, simple and suitable for practical design.

关 键 词：梭形钢管柱 轴心受压 弹性屈曲荷载 

分 类 号：TU313.1[建筑科学—结构工程] TU375.3