本文报导了自1983年以来对我国主要预应力钢绦厂生产的高强钢绦所进行的松弛性能试验研究。其中包括不同初始应力、时间以及超张拉工艺等因素对松弛的影响。共试验42根试件,取得3000多个数据,长期试件持续时间长达27500小时。根据试验研究结果,提出了我国高强钢绦松弛的规律并建议采用松弛应力损失的计算公式。 This article reports on the relaxation behavior of high-strength steel sockets produced in China’s major prestressing steel sills since 1983. Including different initial stress, time and over-tensioning process and other factors on the relaxation. A total of 42 test specimens, obtained more than 3000 data, long-term specimen duration of up to 27,500 hours. According to the experimental results, the relaxation rules of high-strength steel sash in China are proposed and the calculation formula of relaxation stress loss is proposed.