岩土力学2025，Vol.46Issue(6)：1709-1718,10.DOI:10.16285/j.rsm.2024.1002
不同加载速率下花岗岩多期应力记忆方向独立性试验研究
Experimental study on directional independence of multi-stage stress memory in granite under different loading rates
摘要
Abstract
To investigate the directional independence of multi-stage stress memory in granite under different loading rates,uniaxial cyclic loading and unloading tests were performed at five loading rates and different deflection angles.Acoustic emission technology was employed to reveal how different loading rates affect the rock's multi-stage stress memory,including the Kaiser effect(KE)and the incomplete erasion phenomenon(IEP).The results indicate that granite shows directional independence of multi-stage stress memory at different loading rates.The critical angle of directional independence for KE is higher than that for IEP at each loading rate.As the loading rate increases,the KE critical angle of granite gradually increases.When the loading rate is below 10 kN/min,the IEP critical angle also increases,but it decreases to 0º-5º when the loading rate exceeds 10 kN/min.The results offer an experimental foundation for a more systematic and in-depth understanding of the directional independence of multi-stage stress memory in rocks.关键词
声发射法/应力记忆/Kaiser效应/抹录不净现象/不同加载速率/偏转加载Key words
acoustic emission method/stress memory/Kaiser effect/incomplete erasion phenomenon/different loading rates/deflection loading分类
土木建筑引用本文复制引用
马春德,康子豪,阳文源,谭观霜,赵俊康..不同加载速率下花岗岩多期应力记忆方向独立性试验研究[J].岩土力学,2025,46(6):1709-1718,10.基金项目
国家自然科学基金(No.52074352) （No.52074352）
湖南省自然科学基金(No.2023JJ30680).This work was supported by the National Natural Science Foundation of China(52074352)and the Natural Science Foundation of Hunan Province(2023JJ30680). （No.2023JJ30680）
