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| 钢筋混凝土梁破坏过程的声发射特征试验研究 | |
| 引用本文： | 葛若东,刘茂军,吕海波.钢筋混凝土梁破坏过程的声发射特征试验研究[J].广西大学学报(自然科学版),2011,36(1). |
| 作者姓名： | 葛若东 刘茂军 吕海波 |
| 作者单位： | 1. 广西大学土木建筑工程学院,广西,南宁,530004 2. 广西大学土木建筑工程学院,广西,南宁,530004;桂林理工大学南宁分校,广西,南宁,530001 3. 广西大学土木建筑工程学院,广西,南宁,530004;桂林理工大学土木与建筑工程学院,广西,桂林,541004 |
| 基金项目： | 国家自然科学基金资助项目(50909021); 广西科学研究与技术开发计划项目(桂科攻0992027-9); 广西建筑工程检测与试验重点实验室开放基金(桂科能07109005-A) |
| 摘 要： | 对原型钢筋混凝土简支梁进行了跨中集中力加载破坏的声发射试验,根据声发射信号的特点及试验全过程的声发射信号的能量—平均频率关联图,分析了简支梁破坏过程中的平均频率分布范围及变化特点,确定了声发射参数统计分析方法及滤波范围,并通过钢筋拔出试验从能量的角度对声发射信号的突变点进行了解释,得出了简支梁破坏过程中声发射参数的变化规律。在此基础上,对声发射在监测钢筋混凝土梁的破坏、预测梁极限承载力两方面的应用进行了初步探讨。 |
| 关 键 词： | 钢筋混凝土梁 声发射 监测 极限承载力 |
Experimental research on acoustic emission characteristics of reinforced concrete beams during failure process |
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| GE Ruo-dong,LIU Mao-jun,LU Hai-bo.Experimental research on acoustic emission characteristics of reinforced concrete beams during failure process[J].Journal of Guangxi University(Natural Science Edition),2011,36(1). | |
| Authors: | GE Ruo-dong LIU Mao-jun LU Hai-bo |
| Institution: | GE Ruo-dong1,LIU Mao-jun1,3,LU Hai-bo 1,2(1.College of Civil and Architectural Engineering,Guangxi University,Nanning 530004,China,2.College of Civil and Architectural Engineering,Guilin University of Technology,Guilin 541004,3.Nanning Branch School,China) |
| Abstract: | AE tests on the reinforced concrete beams under cross-loading were carried out.After studying the characteristics of AE signal and AE energy-frequency curve,the scope of the AE frequency were analyzed and statistical analysis methods of AE parameters and the filtering range were identified.Based on the pull-out test of reinforcing bar,the transition point of the AE signal was interpreted and the variation of the acoustic emission parameters in the reinforced concrete beams was obtained.Finally,the applicati... |
| Keywords: | reinforced concrete beam acoustic emission(AE) monitor ultimate bearing capacity |
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