（北京市建筑设计研究院有限公司， 北京100045）

［摘要］选取五种楼板计算模型分析了楼板计算模型对结构地震力分配和悬挑转换桁架内力的影响，计算了转换层楼板的应力状态。分析表明，楼板采用刚性、弹性模型会显著影响地震力在抗侧力构件中的分配。建议在悬挑转换桁架的分析中楼板采用弹性板或弹性膜计算模型。悬挑转换桁架中楼板受拉区域应设置楼板配筋加强区。

［关键词］转换桁架； 悬挑桁架； 楼板计算模型； 配筋加强区

中图分类号： TU375.5 文献标识码： A文章编号：  1002-848X(2016)S1-0233-04

Effect of slab calculation model on mechanical behavior of cantilever transfer truss

Tang Shaoxue

（Beijing Institute of Architectural Design, Beijing 100045, China）

Abstract: Seismic force distribution was analyzed with five slab calculation models. Seismic reaction of cantilever transfer truss and stress of transferring floor were also calculated. The results show that seismic force distribution is badly influenced by rigid or flexible calculation modal of slabs. The flexible plate or flexible membrane calculation model is advised in the analysis of cantilever transfer truss. Reinforcement strengthen region is added in the area with tension stress.

Keywords: transfer truss； cantilever truss； slab calculation model； reinforcement strengthen region