混凝土结构声发射检测参数设置研究  

The Setting of Acoustic Emission Detecting Parameters in Concrete Structure

作　　者：欧阳利军[1] 陆洲导[1] 赵艳林[2,3] 吕海波[2] 

机构地区：[1]同济大学土木工程学院,上海200092 [2]广西大学土木建筑工程学院,南宁530004 [3]桂林工学院土木工程系,桂林541004

出　　处：《重庆建筑大学学报》2008年第5期37-41,共5页Journal of Chongqing Jianzhu University

基　　金：广西教育厅重点科研项目(桂教科研[2003]22);广西大学科学技术研究重点基金资助项目(2003ZD03)

摘　　要：为系统解决混凝土声发射检测参数设置依靠经验选取的问题,通过模拟加载和断芯试验确定了适合试验检测环境的门槛值;通过断芯试验确定了适合被检测混凝土材料的检测时间参数值(PDT,HDT,HLT),并测定了信号在被检测材料中传播的波速和衰减。试验确定声发射检测参数的方法在混凝土结构声发射检测中具有普遍适用性。In order to solve the problem that the choice of acoustic emission （AE） parameters in concrete detection are determined only by experience, several tests were conducted. Through lead- breaking and stimulant loading tests, the reasonable value of threshold at which noise can be efficiently insulated was obtained. Through lead-breaking tests, time parameters （PDT, HDT, H LT） which fit concrete samples were obtained. The velocity and attenuation of AE signals in concrete also were measured through lead-breaking tests. This method of ascertaining detection parameters by testing is practical for AE detection in concrete structures.

关 键 词：混凝土 声发射 检测参数 

分 类 号：TU112.2[建筑科学—建筑理论] TU528