超大梁转换层结构两种分析方法的比较研究

Comparative study on two analysis models for the transfer floors with huge girders

以一高层建筑超大梁转换层结构为背景,分别采用基于刚性楼板假定的计算模型和基于板壳单元的弹性楼板有限元模型对超大梁转换层结构进行计算分析,通过对转换层结构上述两种分析模型的主要计算结果的比较研究,探讨了这两种分析模型在转换主梁应力分布、次梁内力以及转换层附近剪力墙应力分布等数值结果的差异,得到了一些有应用价值的结论.

In this paper, a transfer floor composed with huge girders is taken into consideration. The floor is analyzed with two kinds of models, one based on the rigid-floor assumption, the other is on the finite element method using shell element and elastic analysis. The results between these two kinds of models are compared to explore the stress distribution in transfer girders, internal force in secondary beams and stress distribution in shear walls which are constructed close to the transfer floors. Finally, a valuable conclusion is achieved and summarized.