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冷拔低碳钢丝预应力混凝土生产技术具有显著的技术经济效益,在城乡住宅建设中得到广泛应用。正确控制和测定预应力钢丝的张拉力是保证和提高预应力混凝土构件的关键。因此,设计施工规程JGJ 19-84中规定,在钢丝张拉锚固之后,须检测钢丝的张拉力。力值误差必须在规定的范围内。但是以往由于缺乏相应的仪器,普遍存在张拉力误差过大的问题。浙江省建筑科研所根据建设部1983年下达的任务,
Cold-drawn low-carbon steel prestressed concrete production technology has significant technical and economic benefits, and is widely used in urban and rural residential construction. The correct control and determination of tensile force of prestressed steel wire is the key to ensure and improve prestressed concrete components. Therefore, the design and construction regulations JGJ 19-84 stipulates that the tensile force of the steel wire shall be tested after the steel wire is tensioned and anchored. The error in force must be within the specified range. However, due to the lack of corresponding instruments in the past, there was a general problem that the tension force error was too large. The Zhejiang Provincial Institute of Building Research and Research, according to the tasks assigned by the Ministry of Construction in 1983,