压弯荷载共同作用下肋板结构剪力滞分析  

Analysis of Shear Lag of Ribbed Slab Structure Under Combined Bending and Axial Loading

作　　者：李华[1] 任剑莹[1] 

机构地区：[1]石家庄铁道学院工程力学系,河北石家庄050043

出　　处：《桥梁建设》2005年第4期24-26,30,共4页Bridge Construction

摘　　要：利用最小势能原理分别建立了肋板结构仅在轴力及压弯荷载作用下考虑剪滞剪切变形综合效应控制微分方程,在获得方程解析解后,导出了可广泛应用的有限元列式。算例表明,该方法计算精度较高,便于实际应用,具有很高的工程应用价值。In accordance with principle of minimum potential energy, the governing differential equations for ribbed slab structure under axial loading only as well as under combined bending and axial loading are respectively established, in which the comprehensive effects of shear lag and shear deformation are considered. The finite element matrixes that are widely applicable are derived, based on obtained analytical solutions of the equations. The numerical calculation results indicate that the calculation method as provided in the paper is accurate, convenient for practical usage and is of great values of engineering application.

关 键 词：肋板结构 剪力滞 最小势能原理 计算方法 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]