基于声发射技术的水平套筒灌浆饱满度试验  

Experimental on Filling Degree of Horizontal Sleeve Grouting Based on Acoustic Emission Technology

作　　者：虞爱平 石津旭[2] 李秀鑫 李翔昊 邓雪莲 YU Ai-ping;SHI Jin-xu;LI Xiu-xin;LI Xiang-hao;DENG Xue-lian(Guangxi Key Laboratory of Green Building Materials and Construction Industrialization,Guilin 541000,China;College of Civil Engineering,Guilin University of Technology,Guilin 541000,China)

机构地区：[1]广西绿色建材与建筑工业化重点实验室,桂林541000 [2]桂林理工大学土木工程学院,桂林541000

出　　处：《科学技术与工程》2025年第10期4256-4264,共9页Science Technology and Engineering

基　　金：国家自然科学基金(51968014);广西自然科学基金(2022GXNSFAA035553);广西研究生教育创新计划(YCSW2023367);广西高校中青年科研基础能力提升项目(2024KY0276);广西绿色建材与建筑工业化重点实验室(桂科能19-J-21-27)。

摘　　要：预制梁中灌浆套筒的灌浆缺陷评价一直是学者研究的焦点,水平灌浆缺陷对性能的影响要比端部灌浆缺陷和竖直灌浆缺陷更大,针对水平灌浆缺陷评价问题,分别利用声发射仪内置的自动传感器测试(auto sensor test,AST)功能和断铅法(pencil-lead breakage,PLB)主动激发信号,结合水平套筒灌浆饱满度测试试验,通过参数分析和快速傅里叶变换研究了水平灌浆饱满度分别为50%、60%、70%、80%、90%、100%的套筒中声发射波速、能量、振铃计数以及波形参数的变化规律,建立了声发射能量与振铃计数参数和主频幅值随灌浆饱满度变化的关联关系式。结果表明,当激励源为AST时,声发射能量、振铃计数和波形的主频幅值与灌浆套筒饱满度的增加呈现良好的负指数相关性,结合关系式,可以对水平套筒的灌浆饱满度进行声发射定量分析评价。The evaluation of grouting defects in precast beam grouting sleeves has long been a focal point of scholarly research,with the impact of horizontal defects on performance surpassing that of end and vertical defects.Aiming at the problem of horizontal grouting defect evaluation,the active excitation signal of AST(auto sensor test)and PLB(pencil-lead breakage)function built in acoustic emission instrument was studied,combined with horizontal sleeve grouting fullness test.Through parameter analysis and fast Fourier transform,changes in acoustic emission wave velocity,energy,count and waveform parameters are examined at filling degrees of 50%,60%,70%,80%,90%and 100%.Furthermore,the correlation between acoustic emission energy,count parameters and main frequency amplitude with grouting fullness was established.The results show that when the excitation source is AST,the acoustic emission energy,count and the main frequency amplitude of its waveform show a good negative exponential correlation with the increase of grouting sleeve fullness,and the combination of the relational equations allows for quantitative acoustic emission analysis and evaluation of grouting fullness of horizontal grouting sleeves.

关 键 词：水平灌浆缺陷 声发射 自动传感器测试 断铅法 定量分析 

分 类 号：TU112.2[建筑科学—建筑理论]