【摘要】 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。更多还原

【Abstract】 An experimental investigation and finite element analysis of single-layer of reinforced concrete were carried out.The effects of the bench plate thickness,slope and the arrangement type of reinforcement on mechanical behaviors of stairs components were analyzed.The study results showed that when forward horizontal displacement was applied to the stairs model displacement,the stairs horizontal stiffness and the bearing capacity increased obviously with the increase of the step board thickness,but reduced significantly with the increase of the slope.When the reverse horizontal displacement was applied to the stairs model,the ladder board thickness and the slope had little influence on the stairs horizontal stiffness and the bearing capacity of the staircase model.The staircase models with upper longitudinal reinforcement through bench plate were more favourable for seismic performance of stairs.更多还原