冷轧扭钢筋的性能及工程应用

• 作 者: 刘立新 申玉花
• 出 处: 中州建筑
• 发表日期: 1995年03期
• 关键词: 钢筋直径 工程结构 普通低碳钢 钢筋砼构件 粘结锚固 冷拉 工艺参数 裂缝宽度 钢筋砼结构 调直

冷轧扭钢筋是由普通低碳钢Q235、Q215(相当于原3号钢)的热轧圆盘条(母材)用专门的冷轧扭机按规定的工艺参数经调直、冷拉、冷扎、冷扭一次加工成型的呈连续螺旋状的冷强化钢筋(图1)。热轧圆盘条经冷轧扭加工后,其搞拉强度大大提高,与砼的粘结锚固作用明显增强,并仍可保留必要的塑性。用冷轧扭钢筋代替普通热轧圆盘条应用于工程结构可节材35％以上,并可提高工效,有显著的社会经济效

The cold-rolled and twisted steel bar is made by ordinary cold-rolled twisting machines of ordinary low-carbon steels Q235 and Q215 (equivalent to the original No. Cold-rolled, cold-twisted cold-strengthened steel bars that are continuously formed and shaped in a single spiral (Figure 1). After hot-rolled and twisted hot-rolled discs, their tensile strength is greatly improved, and the bonding and anchoring effect with yttrium is obviously enhanced, and the necessary plasticity can still be retained. The use of cold-rolled and twisted steel bars in place of ordinary hot-rolled discs for engineering structures can save more than 35% of materials, improve ergonomics, and have significant socioeconomic effects.