局部荷载作用下网架结构的拟夹层板分析法  

EQUIVALENT SANDWICH PLATE METHOD FOR DOUBLE-LAYER SPACE GRIDS UNDER LOCAL LOADING

作　　者：张文福[1] 刘文洋[1] 计静[1] 白那[1] 

机构地区：[1]大庆石油学院土木建筑工程学院,大庆163318

出　　处：《力学与实践》2004年第3期54-56,共3页Mechanics in Engineering

摘　　要：把正交正放类网架结构简化为构造上正交异性的夹层板,采用考虑剪切变形的具有三个广义位移的平板弯曲理论来分析,给出了网架结构在局部荷载作用下的内力、位移解析计算公式,并用有限元方法进行了验证。In this paper the orthogonal and ortho-laid space grids are assumed as an orthotropic sandwich plate, which is analyzed by the theory of plate with consideration of shear deformation and three generalized displacements. The calculating formulas for internal forces and displace- ments of double-layer space grids under local loading are given based upon ESPM, and have been validated by the finite element method (ANSYS). In general, the differ- ences between ESPM and FEM are less than 10% and 5% for internal forces and displacements, respectively. So this method can be used in the design of double-layer space grids.

关 键 词：网架结构 拟夹层板法 局部荷载 有限元法 结构力学 边界条件 

分 类 号：TU311[建筑科学—结构工程]