高效钢筋和预应力混凝土技术介绍

• 机 构: 建设部建筑业司
• 出 处: 建筑知识
• 发表日期: 1995年04期
• 关键词: 混凝土结构构件 普通碳素钢 低碳钢丝 冷拔 混凝土粘结 中强钢丝 配筋 混凝土结构性能 建筑结构 钢铰线

一、内容概述 我国建筑结构和工程构筑物大多采用钢筋混凝土和预应力混凝土结构和构件,钢筋年用量约1300万吨。其中,用量最大的是1级钢筋,占60％以上,其次是Ⅱ级钢筋。用Ⅰ,Ⅱ级钢筋配筋的普通钢筋混凝土结构是当今建筑结构的主体。预应力混凝土结构构件多数采用冷拔低碳钢丝或高松弛的普通碳素钢丝,这种钢丝与混凝土粘结差。1992年,全国预应力混凝土产量约1500万立方米,应用冷拔低碳钢丝

I. Summary of contents Most of China’s building structures and engineering structures use reinforced concrete and prestressed concrete structures and components. The annual amount of steel used is about 13 million tons. Among them, the largest amount of steel is grade 1, which accounts for more than 60%, followed by grade II steel. Ordinary reinforced concrete structures reinforced with grades I and II are the mainstay of today’s building structures. Most prestressed concrete structural members use cold-drawn low-carbon steel wire or high-relaxation ordinary carbon steel wire, which has poor adhesion to concrete. In 1992, the national production of prestressed concrete was about 15 million cubic meters, and cold-drawn low-carbon steel wire was used.