（ 深圳市清华苑建筑设计有限公司,深圳 518052）

[摘  要]  梯板平面内横梯方向的刚度及横梯方向的地震分量对传统楼梯的受力、安全都有着一定的影响。在钢筋混凝土耐震楼梯设计中，可以在梯板的端部设置可滑动支撑面同时在侧面设置缓冲构造，用以消除横向地震力破坏效应。本文对国家新的楼梯设计标准详图提出了改进意见。

[关键词]  横梯方向；耐震设计；缓冲构造

中图分类号：TU375      文献标识码：A      文章编号：1002-848X（2013）S1-1142-03

作者简介：刘一威, 硕士, 教授级高工, Email: liuyiweihrb@126.com

There should be the buffer joints on the sides of slabs of the reinforced concrete shock-bearing stairs

Liu Yiwei

( Tsinghua-Yuan Architectural Design Ltd., Shenzhen 518052, China)

Abstract: There must be some influence on the inner force and the safety of traditional stairs, by the cross planer rigidity of stair slabs and cross component of earthquake.  In the shock-bearing design of reinforced concrete stairs, a buffer joint can be laid on the side of the stair slabs, coexisting with the slidable surface on a supported end, to eliminate the destroying effect from the cross component of earthquake. Some suggestions are given for the new standard drawing.   

Keywords: cross direction; shock-bearing design; buffer joint