[摘要] 本文归纳了6种类型的不规则楼板，简述了它们的受力特点和分析要点。文中给出了二个工程实例，应用弹性楼板模型对不规则楼板的平面应力及楼板与竖向构件之间的相互影响进行了详细剖析。当楼板的凹槽或洞口实质性地改变了水平力的传力途径，可能会造成应力集中，影响到竖向构件的内力分布。对于刚度较强的电梯井壁，井道贯通、楼板缺失，通过竖向构件也是可以传递水平力剪力、协调变形的。但是对井壁角部的应力水平应加以注意，尤其是处于高烈度区结构的顶部区域。凹槽附近，除了楼板需要加强以外，对竖向构件也要采取加强措施，避免过早出现塑性铰，成为结构的薄弱部位。

[关键词] 楼板，楼板不规则，楼板与竖向构件之间的相互影响

Abstract: The slab irregularity was defined in this paper. To study the dynamic behavior of the irregular slab and the slab-vertical element cross-effects, two engineering projects were analyzed by using finite element method. The results show that the deep slot or big holing in slab may change the direction of the in-planar stress flow, resulting in stress concentration both in the slab and vertical elements in vicinity of the slot or hole. For no slab lift well, the wall, which is stiff, may resist the horizontal force and be deformed as integrity. However, caution should be taken on the stress intensity at corner of the wall in upper portion of the designed structures in high seismic zone. For the slot-shape irregularity, both slab and vertical elements around the slot should be designed for avoiding earlier yielding by the over-strength factor.

Key words: slab, slab irregularity, slab-vertical element cross-effects