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对单层板式钢筋混凝土楼梯进行试验研究和有限元分析,在分析中考虑了梯段板厚度、坡度、钢筋布置形式三个因素对楼梯构件受力性能的影响。研究结果表明:对楼梯模型施加正向水平位移时,楼梯水平方向的刚度、承载力随梯段板厚度的增加而明显增大,随梯段板坡度的增加而明显降低。对楼梯模型施加反向水平位移时,梯段板厚度、坡度对楼梯水平方向的刚度及承载力几乎没有影响,梯段板上层纵筋贯通对楼梯的抗震性能更有利。
The experimental research and finite element analysis of the single-storey reinforced concrete staircase are taken into account. The influences of the three factors of the thickness, the slope and the arrangement of the reinforcement on the performance of the staircase are considered in the analysis. The results show that when the horizontal displacement is applied to the staircase model, the stiffness and the bearing capacity in the horizontal direction of the staircase obviously increase with the increase of the thickness of the staircase, and decrease obviously with the increase of the slope of the staircase. When applying the reverse horizontal displacement to the staircase model, the thickness and slope of the slab have almost no effect on the horizontal stiffness and bearing capacity of the staircase. The longitudinal reinforcement on the upper slab is more favorable to the seismic performance of the staircase.