常温拉伸应力松弛试验初始试验力保持时间的研究

Significance and Role of Initial Test Load Holding Time in Tensile Stress Relaxation Test at Room Temperature for the Pre-stressed Rolled Steel

本文探讨了预应力钢材常温拉伸应力松弛试验中,初始试验力保持时间的意义与作用。分析和论述了试验设备、试验方法及试样结构等因素对应力松弛试验结果的影响。验证了初始试验力保持时间,可以一定程度地消除和抑制干扰因素对松弛试验结果的影响。

This paper describes the significance and role of the initial test load holding time in the tensile stress relaxation test at room temperature for the pre-stressed rolled steel. The effects of some factors such as testing e-quipment,testing method and sample structure on the stress velaxation test results are analysed and discussed. The holding time of the initial test load, to a certain extent ,can eliminate and inhibit the scale of disturbing error.