折板楼梯的配筋要点

• 作 者: 杨升
• 出 处: 建筑工人
• 发表日期: 1999年02期
• 关键词: 配筋 混凝土保护层 受拉区 钢筋绑扎 结构隐患 纵向受力钢筋 钢筋加工 建筑设计 锚固长度 折角

由于折板楼梯外形简洁,易于布置,适应建筑设计的多样化,近几年经常被采用。但不少施工人员不了解其配筋要点,在受拉区的折角内侧连续弯折配筋,造成结构隐患,见图1(a)。因为当此钢筋受拉时,形成向外合力,很容易将薄薄的混凝土保护层崩裂,钢筋与混凝土分离而发生结构破坏,见图1(b)。正确的配筋为

Due to the concise shape of the folding staircases, their ease of layout and their adaptability to the diversity of architectural designs, they have been used in recent years. However, many construction workers do not understand the reinforcement points. Continuously bending reinforcements inside the folded corners of the tension zone cause structural problems, as shown in Figure 1(a). Because when the steel bar is pulled, it forms an outward force, it is easy to crack the thin concrete protective layer, and the structural damage occurs between the steel bar and the concrete. See Figure 1(b). The correct reinforcement is