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（中國中元興華工程公司  北京100089)
［提要］懸挑樓梯屬于空間受力體系，受力復雜，計算繁瑣。介紹了一種簡易可行的鋼筋混凝土懸挑樓梯計算方法：在外力作用下，將樓梯梯段板簡化為一個受拉，一個受壓。根據計算假定進行懸挑樓梯的內力分析，計算出鋼筋截面面積，并提出相應的構造要求。經過對比分析，計算結果與板的相互作用法一致。
［關鍵詞］剪刀樓梯；梯段板；平面內彎矩；平面外彎矩；暗梁
Structural Design for RC Cantilever Stair/Jiang Zhongguo,Gu Demin(China IPPR Eng. Co.,Beijing 100089,China)Abstract:Cantilever stair is a space system, and traditional design method for it is very tedious. A simplified method is presented, in which stair plates are assumed as pull and pressed members. The constructional details and calculation process are also given. The final results are very good compared with analytical methods.
Keywords:cantilever stair; stair plate; momentinplane; momentoutplane; plate beam