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目前我国最常用的预应力钢筋为冷拉5号蜾纹钢筋,由于其强度较低,节约钢材的效果不甚显著,限制了预应力结构的采用和进一步发展,因此十分需要研究高强度的配筋钢材,以满足建设工程的需要。国际上常用的预应力钢材有钢丝、钢绞线及高强度粗钢筋三种,高强度粗钢筋的强度虽较前二种钢材稍低,但其生产工艺较简单,价
At present, the most commonly used prestressed rebar in China is the cold drawn No. 5 rebar. Because of its low strength, the effect of saving steel is not significant, which limits the adoption and further development of prestressed structure. Therefore, it is very necessary to study the distribution of high strength Steel bars to meet the needs of construction projects. Internationally used prestressed steel wire, strand and high-strength crude steel three, although the strength of high strength crude steel slightly lower than the previous two kinds of steel, but its production process is relatively simple, the price