岩石疲劳损伤扩展规律CT细观分析初探

岩石疲劳损伤扩展规律CT细观分析初探 English Version

中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室!甘肃兰州730000.中国科学院武汉岩土力学研究所；湖北武汉430071 上海交通大学；上海200030；中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室!甘肃兰州730000 中国科学院武汉岩土力学研究所；湖北武汉430071；

基金项目: 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)

1.State Key Laboratory of Frozen Soil Engineering The Chinese Academy of Sciences Lanzhou 730000 China 2.Institute of Rock and Soil Mechanics The Chinese Academy of Sciences

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。
- 岩石疲劳损伤 /
- CT实时分析 /
- 损伤扩展 /
- 门槛值
Abstract: 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.
- fatigue damage of rock /
- CT real-time analyse /
- damage propagation /
- threshold value