本文据根大量实验数据,采用统计方法,获得了铰JM12-6锚具变形损失的计算公式,可供预应力钢结构和无粘结束后张钢筋混凝土结构采用这种预应力筋时采用. 通过50万次的疲劳试验,证明锚具和钢铰线在八度地震区使用时,它的抗震性能是可靠的. 实验证明,天津钢厂生产的7φ4钢铰线的低温性能是良好的,在-30℃的低温下,承载力并不降低. In this paper, based on a large number of experimental data, using statistical methods, the formula for calculating the deformation loss of the hinged JM12-6 anchor is obtained, which can be used when prestressed steel structures and post-toughened reinforced concrete structures adopt such prestressed tendons. The 500,000-time fatigue test proved that the anchorage and the steel hinge line are reliable when used in the octaspheric earthquake zone. Experiments have proved that the low temperature performance of the 7φ4 steel hinge line produced by Tianjin Steel Works is good. -30 °C low temperature, bearing capacity does not decrease.