在为期半年的松弛性能试验的基础上,研究了规格为FA11的AFRP(芳纶纤维)筋的松弛率随时间的变化规律。研究表明,AFRP筋的松弛较明显,松弛率与时间对数线性相关,且松弛率与张拉控制应力成正比关系。
Based on the relaxation experiments of AFRP tendons for half a year, the variation regularities of the relaxation rate according to time of one kind of AFRP, FA11, are studied. The results indicate that the relaxation of AFRP is obvious, and the relaxation rate linearly depends on time and is in direct ratio with tension control stress.