含穿透裂纹岩石的高频疲劳特性研究  

THE HIGH-FREQUENCY FATIGUE CHARACTERISTICS OF ROCK WITH CRACKS

作　　者：周有成[1] 陈有亮[1] 邵伟[1] 

机构地区：[1]上海理工大学土木工程学系,上海200093

出　　处：《工程力学》2011年第7期98-102,共5页Engineering Mechanics

基　　金：国家自然科学基金项目(10872133);上海市浦江人才计划项目(09PJ1407700)

摘　　要：该文以高强度白水泥为模拟材料,对含预置不同数目穿透裂纹的岩石进行了单轴压缩试验以及高频疲劳单轴压缩试验研究。该文充分考虑了裂纹对岩石试块宏观力学性能的影响,描述了裂纹扩展的规律,得到了含穿透裂纹的岩石材料的S-lgN曲线和考虑裂纹相互作用的疲劳方程。In this paper,high-strength white cement is adopted as the experimental material for simulating rocks,and high-frequency fatigue uniaxial compression tests of rock specimen with different number of cracks are conducted.Considering the influence of cracks on the mechanical properties of specimens,the crack extension mechanism is investigated,while the S-lgN curves and the fatigue equation for the rock specimens are obtained.

关 键 词：岩石 疲劳 高频试验 穿透裂纹 断裂 

分 类 号：TU458[建筑科学—岩土工程]