[1]门进杰,朱 乐,李 欢,等.钢筋混凝土梁声发射检测参数设置和受力特征试验研究[J].西安建筑科技大学学报：自然版,2015,47(06):793-798.[doi:10.15986/j.1006-7930.2015.06. 005]
　MEN Jinjie,ZHU Le,LI Huan,et al.Experimental research on the acoustic emission detecting parameters and mechanical behaviors for reinforced concrete structure[J].J.Xi’an Univ. of Arch. & Tech.：Natural Science Edition,2015,47(06):793-798.[doi:10.15986/j.1006-7930.2015.06. 005]
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钢筋混凝土梁声发射检测参数设置和受力特征试验研究()
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西安建筑科技大学学报：自然版[ISSN:1006-7930/CN:61-1295/TU]

卷:
47
期数:
2015年06期
页码:
793-798
栏目:
出版日期:
2016-01-15

文章信息/Info

Title:
Experimental research on the acoustic emission detecting parameters and mechanical behaviors for reinforced concrete structure
文章编号:
1006-7930(2015)06-0793-06
作者:
门进杰; 朱 乐; 李 欢; 王晓丹
(西安建筑科技大学土木工程学院,陕西 西安710055)
Author(s):
MEN Jinjie;  ZHU Le;  LI Huan;  WANG Xiaodan
(School of Civil Engineering, Xi’an Univ. of Arch. & Tech. Xi’an 710055, China)
关键词:
声发射; 钢筋混凝土结构; 无损检测; 断铅试验; 基于参数的分析
Keywords:
Acoustic emission;  reinforced concrete structure;  non-destructive testing;  PLBs;  parameter-based analysis
分类号:
TU375
DOI:
10.15986/j.1006-7930.2015.06. 005
文献标志码:
A
摘要:
为了建立声发射参数与钢筋混凝土梁受力特征之间的关系，进行了钢筋混凝土梁的四点弯曲试验和声发射测试试验.通过预加载和断铅试验，给出了适用于钢筋混凝土梁的门槛值确定方法、时间参数（峰值定义时间、撞击定义时间和撞击闭锁时间）确定方法、声发射波速的测定方法，以及相应的测试结果.通过四点弯曲试验和声发射测试试验，得到了振幅、振铃计数、能量和上升时间等声发射参数随荷载的变化关系，揭示了利用上述声发射参数表征钢筋混凝土梁受力特征的规律和方法.基于声发射参数，通过计算得到了试件在初始开裂和屈服时的裂缝分布情况，与试验结果相比，在裂缝数量和裂缝位置上，均吻合较好
Abstract:
Four-point bending test and AE test of a RC beam were conducted in order to capture the relations between acoustic emission (AE) parameters and mechanical characteristic for reinforced concrete (RC) structure. Procedures to determine the threshold level, time parameters (PDT, HDT, HLT) and wave velocity for RC beam were demonstrated by AE pre-test and Pencil Lead Breaks (PLBs). Relations between AE parameters, such as amplitude, ringdown count, energy and rise time, and the applied load were obtained based on four-point bending test and AE test. Then the method to assess the mechanical behaviors of RC beams by these AE parameters were established. In addition, the crack locations, when the beam began to crack and to yield, were calculated by AE parameters. The results show close correlation in the calculated crack location and crack amount with the bending test

参考文献/References:

References

[1] GROSSE C U , Ohtsu M. Acoustic emission testing: basic for research-applications in civil engineering [D]. Berlin Heidelberg: Springer-Verlag, 2008.

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JI Hongguang, ZHANG Tiansen, CAI Mengfeng, et al. Experimental study on concrete damage by dynamic meas urement of acoustic emission[J]. Chinese Journal of Rock Mechanics and Engineering, 2000, 19(2):165-168.

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[6] 江煜，许飞云，许丙胜 等. 声发射层析成像技术在混凝土结构中的应用[J]. 东南大学学报：自然科学版, 2014，44(4): 822-825.

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OUYANG Lijun, LU Zhoudao, ZHAO Yanlin, et al. The setting of acoustic emission detecting parameters in concrete structure [J]. Journal of Chongqin Jianzhu University, 2008, 30(5):37-41.

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National defense science and technology industrial nondestructive testing personnel qualification and certification training materials. Acoustic emission detection[M]. Beijing: Mechanical Industry Press, 2005

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[1]范旭红,章立栋,杨 帆,等.基于BA-Elman算法的预应力钢筋混凝土梁损伤识别研究[J].西安建筑科技大学学报：自然版,2023,55(03):332.[doi:10.15986/j.1006-7930.2023.03.003 ]
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备注/Memo

备注/Memo:
收稿日期：2015-07-13 修改稿日期：2015-12-04
基金项目：国家自然科学基金项目( 51008244，51178380) ；陕西省自然科学基础研究计划基金项目(2015JM5173, 2014JQ7245，2014KJXX-67)
作者简介：门进杰 (1979-)，男，教授， 博士，主要从事结构理论分析、建筑结构及其抗震的研究．Email:men2009@163.com
更新日期/Last Update: 2016-01-29