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通过用不同的计算软件对密肋楼盖在竖向荷载作用下的受力机理进行分析。结果表明,不同软件由于计算原理不同,计算结果会有一定的差异,选取的软件需要考虑柱帽刚度的影响。密肋楼盖的柱帽对主梁及与柱帽相连的第一跨次梁弯矩影响较大,而对其他跨的次梁影响较小,这是由于柱帽相当于一个刚臂,能有效减小与之相连梁的跨度。因此,在密肋楼盖结构设计中,做好柱帽的设计,是结构设计的关键,并给出柱帽的配筋示意图。同时,需要根据柱帽的影响,调整好密肋主梁的配筋。另外,分析显示,对梁来说,楼板作为翼缘的作用,无形中增大梁的刚度,造成“强柱弱梁”不易实现。
By using different calculation software, the stress mechanism of the ribbed floor under vertical load is analyzed. The results show that different softwares have different calculation principles due to different calculation principles. The selected software needs to consider the effect of column cap stiffness. The column cap of the ribbed floor has a great influence on the bending moment of the first span beam connected to the main beam and the column cap, but has less influence on the secondary beams of the other span. This is because the column cap is equivalent to a rigid arm, Effectively reduce the span of the beam connected to it. Therefore, in the design of the ribbed floor structure, the design of the column cap is the key to structural design, and the diagram of the reinforcement of the column cap is given. At the same time, according to the impact of column cap, adjust the reinforcement of the dense rib girder. In addition, the analysis shows that for the beam, the effect of the floor as a flange virtually increases the rigidity of the beam, resulting in a “strong column weak beam” difficult to achieve.