韩小雷    （华南理工大学建筑学院  广州 510641）

周    玉    （广州市设计院  广州 510620）

 

[提要]  依据对普通梁板结构和无梁楼板传力方式的比较，指出了出现“无梁楼板同时向两个方向传递荷载，因而不要在两个方向各计算一次内力”的错误认识的根源，通过用ANSYS有限元软件对一区格为5x5的无梁楼板计算，与半经验板带直接设计法结果进行了比较，论证了无梁楼板荷载计算两次的合理性。
[关键词]  无梁楼盖  板柱结构  内力计算  有限元  板带

Two approaches for gravity load analysis of two-way column-supported slabs, the equivalent frame method and the direct design method, both require that 100 percent of the applied load must be carried in each direction. Some designers are not sure about the requirement. This paper explains the two different load-transmitting concepts for beam-slab and column-slab systems and clears the doubt. The comparisons between the results obtained from ANSYS finite element program analysis and those data calculated by the direct design method are also given, the two types data are very similar. The requirement that load should be calculated twice is reasonable.
Keywords: column-supported slab; internal force analysis; finite element; slab strip