摘要
利用笔者研制的CT(ComputerizedTomography)机专用三轴加载试验设备 ,进行了实时的岩石疲劳损伤演化CT细观试验。从细观尺度证实了岩石疲劳破坏存在门槛值 ,研究了循环荷载最大应力值的变化对岩石疲劳破坏的影响机理 ,得到了岩石细观疲劳损伤扩展的初步规律。
It's the first time in the research field of rock mechanics that the computerized tomography (CT) real-time testing of fatigue damage meso-propagation law of rock have been accomplished in this paper using the specified loading equipment of the CT machine developed by the authors. Through the meso-scale CT testing ,it was confirmed that the fatigue damage of rock has a threshold value.The law of fatigue damage of rock about the variation of cyclic loading maximum stress value was studied.The initial fatigue meso-damage propagation law is given.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2001年第2期191-195,共5页
Chinese Journal of Geotechnical Engineering
基金
中科院寒区旱区环境与工程研究所冻土工程国家重点实验室资助!项目 (980 2
2 0 0 3)
关键词
岩石
疲劳损伤
CT实时分析
损伤扩展
门槛值
fatigue damage of rock
CT real-time analyse
damage propagation
threshold value
