以往对钢筋混凝土悬挑式楼梯的研究大部分(图1)是采用梁理论的设计方法,与实验情况相差较大。本文把具有■型平面的悬挑式楼梯,当作由平板与倾斜板组合而成的折板结构,采用有限单元法进行弹性分析与振动分析,研讨其力学特性。并对这种由楼梯段间细小间隔所形成的矩形状的,即所谓■型钢筋混凝土悬挑式楼梯提出一种结构设计方法。 Most of the previous research on reinforced concrete cantilevered staircases (Fig. 1) is based on the beam theory design method, which is quite different from the experimental situation. In this paper, a cantilevered staircase with a flat surface is regarded as a folded plate structure composed of a flat plate and an inclined plate. The finite element method is used for elastic analysis and vibration analysis to study its mechanical properties. A method of structural design is proposed for this type of rectangular-shaped, so-called ■ type reinforced concrete cantilevered staircase formed by the fine spacing between the stair sections.