（中国建筑科学研究院工程抗震研究所  北京100013）
［提要］高层建筑结构转换层的质量和刚度较大。随着转换梁质量和刚度的增加，转换层上下结构的层间位移角差距明显增大，仅限制转换层上下结构侧向刚度比无法有效控制结构地震作用效应。定义层间位移角比为转换层下部与上部结构层间位移角的最大比值。计算分析发现，采用层间位移角比对结构进行控制可以得到比较好的抗震性能。
［关键词］高层建筑；转换结构；层间位移角比；侧向刚度
Application of Ratio of Story Drift Angles Above and Below the Transfer Floor in Seismic Design of Tall Building Structure/Rong Weisheng,Wang Yayong(Institute of Earthquake Engineering,China Academy of Building Research,Beijing 100013,China)Abstract:The mass and stiffness of transfer layer are large in highrise building.With the increasing of the mass and stiffness of transfer beam,the interstory displacement angle ratio of above and below the transfer layer diverse largely.The earthquake response of structure can not be controlled effectively only by limiting the lateral stiffness below and above the transfer story.The ratio of interstory displacement angle of above and below is defined as the maximum value of them.The calculation result shows that better structure seismic response can be got using the interstory displacement angle ratio as control index.
Keywords:highrise building； transfer structure; interstory displacement angle ratio; lateral stiffness