Study on the AE Characteristics of Cracking Process in Prestressed Concrete Beams

王彬; 顾建祖; 骆英; 李忠芳

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Study on the AE Characteristics of Cracking Process in Prestressed Concrete Beams

更新时间：2025-12-11

- Study on the AE Characteristics of Cracking Process in Prestressed Concrete Beams
- Issue 4, Pages: 453-457(2006)
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  CLC： U375.1
- Published：2006
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[1]王彬,顾建祖,骆英,李忠芳.预应力钢筋混凝土梁破坏过程的声发射特性实验研究[J].防灾减灾工程学报,2006(04):453-457.

王彬, 顾建祖, 骆英, et al. Study on the AE Characteristics of Cracking Process in Prestressed Concrete Beams[J]. 2006, (4): 453-457.
[1]王彬,顾建祖,骆英,李忠芳.预应力钢筋混凝土梁破坏过程的声发射特性实验研究[J].防灾减灾工程学报,2006(04):453-457. DOI：

王彬, 顾建祖, 骆英, et al. Study on the AE Characteristics of Cracking Process in Prestressed Concrete Beams[J]. 2006, (4): 453-457. DOI：

摘要

利用全波形声发射技术记录了预应力钢筋混凝土梁在3点弯曲荷载下整个破坏过程的声发射信号

并在研究了声发射累计能量随时间变化关系曲线的基础上

采用谱分析对声发射全波形数据进行了分析和处理。以全波形声发射信号的能量分布特性为依据

通过对时域和频域内信号的振幅、频率特征和构件破坏过程的比较

初步得出了预应力钢筋混凝土梁破坏过程的声发射信号的参数特性

发现全波形声发射信号能够实时反映预应力混凝土梁破坏过程中的特征信息。

Abstract

A series of prestressed concrete beams were loaded at three points subjected to bending until failure.The waveform acoustic emission signals were recorded.Crack initiation and propagation due to bending were monitored and compared with observation.Based on the relationship between the cumulative energy of acoustic emission and time

the waveform acoustic emission signals of different destruction states was picked up and spectral analysis was carried out.According to the value of the energy amplitude of waveform acoustic emission and the comparison of the amplitude and frequency of waveform acoustic emission signals in time domain and frequency domain

different damage stages of the prestressed concrete specimens until failure were divided

and the parameter properties of prestressed concrete specimens were picked up.The research shows that waveform acoustic emission signals can be used to find the characteristics of the different damage stages of prestressed concrete beams under loading in real time.

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references

全波形声发射技术用于混凝土材料损伤监测研究 [J]. 王余刚,骆英,柳祖亭. 岩石力学与工程学报 . 2005(05)

声发射信号的谱分析和相关分析 [J]. 陈玉华,刘时风,耿荣生,沈功田. 无损检测 . 2002(09)

混凝土梁破坏机制的声发射特性实验研究 [J]. 陈兵,姚武,张东,吴科如. 建筑材料学报 . 2001(04)

声发射检测[M]. 机械工业出版社 , 《国防科技工业无损检测人员资格鉴定与认证培训教材》编审委员会编, 2005

声发射技术及其应用[M]. 机械工业出版社 , 袁振明等编著, 1985

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