摘要
结合国内外相关文献,简要阐述了声发射的定义和原理。通过试验对土体在加载下四通道声发射振铃计数参数进行了分析,通过分析应力与应变、时间关系图和四通道下声发射振铃计数随时间的分布图,表明振铃计数对于土中应力的变化敏感,为从声发射的角度研究土的力学性质和破坏机理提供了新的技术手段;通过分析四个通道的声发射振铃计数的分布为以后利用声发射技术检测土体裂隙产生部位提供了理论依据。
Combining the relevant literature at home and abroad, the definition and principle of a- coustic emission are briefly described. Through the test and analysis of the soil in the loading of 4 channel acoustic emission ringing count parameters, through the comparative analysis of stress and strain, time curve and four channel acoustic emission counts with time distribution results show that counts for sensitive to the change of stress in soil, the mechanical properties and failure mechanism of the acoustic emission of soil provides a new technical means ; It is analyzed by analyzing the distribution of the acoustic emission ring count of the four channels for the later detection of soil fissures by acoustic emission production site provides a theoretical basis.
作者
孙振国
李明宝
张旭
SUN Zhenguo LI Mingbao ZHANG Xu(School of Civil Engineering,Northeast Forestry University, Harbin 150040, China)
出处
《低温建筑技术》
2017年第9期93-95,107,共4页
Low Temperature Architecture Technology
基金
哈尔滨市优秀学科带头人基金(2013RFXXJ033)
关键词
声发射
振铃计数
应力
应变
acoustic emission
ringing count
stress
strain
