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高强精轧螺纹钢筋是在整根钢筋上轧有规则的非完整外螺纹的直条钢筋(图1)。该钢筋在纵长的任意截面处都能拧上连接器进行连接或拧上螺帽进行锚固,避免了焊接,所以钢筋不受可焊性的约束,它为高效钢材的生产和应用开拓了新的途径。精轧螺纹钢筋具有连接、锚固简便、粘着力强、张拉锚固安全可靠、施工方便等优点,是发展预应力混凝土构件的新型材料。精轧螺纹钢筋七十年代初期始于联邦德国,后被日、英、美等国引进。我国冶金、建筑、铁道、交通等部门亦于七十年代中、后期开始研制、生产和应用。鉴于高强精轧螺纹钢筋具有广泛的应用领域,特别是在发
High-strength finishing rolled rebar is a straight bar with regular, non-external external threads rolled over the entire bar (Figure 1). The steel bar can be screwed on the connector at any arbitrary length to connect or screw nuts to avoid the welding. Therefore, the steel bar is not constrained by the weldability. It has opened up new possibilities for the production and application of high-efficiency steel. Way. Finished rolled steel bar has the advantages of easy connection, simple anchorage, strong adhesion, safe and reliable tension and anchorage, convenient construction, etc. It is a new type of material for the development of prestressed concrete components. Finished rolled steel bars began in the Federal Republic of Germany in the early 1970s and were introduced by Japan, the United Kingdom, and the United States. China’s metallurgy, construction, railways, transportation and other departments also began to develop, produce and apply in the mid and late seventies. In view of the fact that high-strength fine-rolled rebar has a wide range of applications, especially in the hair