摘要
采用有限元工程分析软件ANSYS对竖向荷载作用下,钢筋混凝土梁板体系中梁板的相互作用关系进行研究分析,通过调整梁与板的抗弯刚度比来分析梁的刚度对板的弯矩的影响.研究结果表明:当梁与板的抗弯刚度比α大于25时,梁的竖向变形相对于楼板可忽略,梁可近似看作楼板竖向无位移的支座,此时楼板支座负弯矩在梁跨中位置最大;随着α的减小,楼板支座负弯矩的分布规律也相应发生变化,当α<10时,楼板支座负弯矩在靠近柱支承处迅速增加.
In the paper, the influence of the rigidity ratio of beam and slab on the moment of the slab in RC floor system under the vertical loads is investigated by means of Finite element analysis soft ware ANSYS. A parametric study has been carried out using the rigidity ratio of beam and slab. It is showed that the deformation of the beam can be neglected compared with that of the slab in the case of the rigidity ratio of beam and slab being higher than 25.decreased shear forces on the frame columns. However, in the case of the rigidity ratio of beam and slab being lower than 10, the moment of slab near the frame columns are increased rapidly.
