在毛主席无产阶级革命路线指引下,我国建筑用钢筋取得了较大的发展。近几年来,高强度低合金钢筋的大量出现,冷拔低碳钢丝的广泛应用,为大力推广预应力结构,降低工程成本,节约钢材等,发挥了积极的作用。为修订钢筋混凝土结构设计规范的需要,曾调查总结了全国主要生产建筑用钢筋的钢厂和一些施工、设计、科研等单位的生产、使用经验,收集统计了大量试验数据,补充做了一些试验,经反复分析比较,多次 Under the guidance of Chairman Mao’s proletarian revolutionary line, China’s construction steel bars have achieved greater development. In recent years, a large number of high-strength low-alloy steel bars have appeared, and the widespread use of cold-drawn low-carbon steel wires has played an active role in vigorously promoting prestressed structures, reducing engineering costs, and saving steel materials. In order to revise the requirements for the design of reinforced concrete structures, the company has investigated and summarized the production and use experience of steel mills that mainly produce steel for construction in the country and some construction, design, and scientific research units. A large number of experimental data have been collected and some experiments have been supplemented. After repeated analysis and comparison,