|Table of Contents|

Study on axial tensile damage evolution mechanism of wet-screened concrete based on GMM(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2024年03期
Page:
1-9
Research Field:
建筑材料
Publishing date:

Info

Title:
Study on axial tensile damage evolution mechanism of wet-screened concrete based on GMM
Author(s):
CHEN Xudong1;  SHI Zhenxiang1;  ZHANG Zhongcheng1;  NING yingjie2;  BAI Lihui2
(1. College of Civil Engineering and Transportation, Hohai University, Nanjing 210098, Jiangsu, China; 2. Zhejiang Communications Construction Group Co., Ltd., Hangzhou 310051, Zhejiang, China)
Keywords:
wet-screened concrete;  damage identification;  Gaussian mixture model;  acoustic emission;  uniaxial tension
PACS:
TU528
DOI:
10.19815/j.jace.2022.06019
Abstract:
In order to study the cracking mode and damage evolution process of two-stage wet-screened concrete under different loading stages, acoustic emission(AE)and Gaussian mixture model(GMM)were used as damage identification methods. Three loading rates(1×10-6, 5×10-6, 25×10-6 s-1)were used as test variables to carry out the experimental study on the spatiotemporal evolution mechanism of uniaxial tensile damage of two-stage wet-screened concrete. The results show that with the increase of loading rate, the internal crack development of wet-screened concrete specimens is more intensive, and the randomness of crack types is higher. After the GMM method being used to process and classify the acoustic emission data, the tensile cracks are the main cracking mode in the test loading process, and the increase of loading rate will lead to the increase of shear cracks. With the increase of loading rate, the frequency distribution of tensile cracks is significantly expanded, while the frequency distribution of shear cracks and mixed cracks is basically unchanged. With the loading process, the probability density regions of tensile cracks and shear cracks tend to the AF axis. The crack mode obtained by GMM method includes the following three categories: tensile crack, shear crack and mixed crack. With the loading process, the location of mixed fracture zone will also change. Compared with the conventional crack pattern classification method, GMM method provides better approximate value analysis of crack classification and more reliable expression of crack cracking pattern.

References:

[1] 米正祥,胡 昱,李庆斌.大坝混凝土断裂强度及其确定方法[J].水力发电学报,2019,38(6):19-28.
MI Zhengxiang,HU Yu,LI Qingbin.Fracture strength of dam concrete and its determination method[J].Journal of Hydroelectric Engineering,2019,38(6):19-28.
[2]SHEN L,WANG L C,SONG Y P,et al.Comparison between dynamic mechanical properties of dam and sieved concrete under biaxial tension-compression[J].Construction and Building Materials,2017,132:43-50.
[3]石 妍,刘战鳌,周世华,等.锈染骨料对湿筛与全级配大坝混凝土力学性能的影响对比[J].长江科学院院报,2021,38(12):146-151.
SHI Yan,LIU Zhan'ao,ZHOU Shihua,et al.Influence of rusty aggregate on mechanical properties of wet-screened and fully-graded dam concretes[J].Journal of Yangtze River Scientific Research Institute,2021,38(12):146-151.
[4]SERRA C,BATISTA A L,AZEVEDO N M,et al.Prediction of dam concrete compressive and splitting tensile strength based on wet-screened concrete test results[J].Journal of Materials in Civil Engineering,2017,29(10):04017188.
[5]PREM P R,MURTHY A R.Acoustic emission monitoring of reinforced concrete beams subjected to four-point-bending[J].Applied Acoustics,2017,117:28-38.
[6]MOHAN A R,POOBAL S.Crack detection using image processing:a critical review and analysis[J].Alexandria Engineering Journal,2018,57(2):787-798.
[7]王 伟,汪 涛,熊德发,等.三轴循环加卸载下砂岩声发射分形特征试验[J].工程科学与技术,2022,54(2):90-100.
WANG Wei,WANG Tao,XIONG Defa,et al.Experiment of fractal characteristics of acoustic emission of sandstone under triaxial cyclic loading and unloading[J].Advanced Engineering Sciences,2022,54(2):90-100.
[8]郁董凯,石启印,杨 帆.基于声发射和BP神经网络的预应力钢筋砼梁损伤过程分析[J].防灾减灾工程学报,2016,36(6):927-935.
YU Dongkai,SHI Qiyin,YANG Fan.Prestressed concrete beam damage process based on acoustic emission and BP neural network analysis[J].Journal of Disaster Prevention and Mitigation Engineering,2016,36(6):927-935.
[9]徐秀丽,张 勇,李雪红,等.基于声发射和深度置信网络的钢筋混凝土梁损伤识别方法研究[J].建筑结构学报,2018,39(增2):400-407.
XU Xiuli,ZHANG Yong,LI Xuehong,et al.Research on damage identification method of reinforced concrete beams based on acoustic emission and depth confidence network[J].Journal of Building Structures,2018,39(S2):400-407.
[10]刘 鑫,杨鼎宜,刘 廉,等.温度-恒载耦合作用下钢纤维混凝土损伤时变规律及其声发射响应[J].建筑材料学报,2019,22(1):24-30.
LIU Xin,YANG Dingyi,LIU Lian,et al.Time-varying law and acoustic emission response of steel fiber reinforced concrete under temperature-constant load coupling action[J].Journal of Building Materials,2019,22(1):24-30.
[11]DAS A K,SUTHAR D,LEUNG C K Y.Machine learning based crack mode classification from unlabeled acoustic emission waveform features[J].Cement and Concrete Research,2019,121:42-57.
[12]郑 泓,段忠东.考虑非线性环境因素影响的结构损伤预警方法研究[J].振动工程学报,2021,34(6):1101-1111.
ZHENG Hong,DUAN Zhongdong.Structural damage alert with consideration of the nonlinear environmental effects[J].Journal of Vibration Engineering,2021,34(6):1101-1111.
[13]宋玉普,段小亮,施林林.大骨料混凝土在动态三轴拉压压应力状态下的强度[J].建筑材料学报,2015,18(5):721-726.
SONG Yupu,DUAN Xiaoliang,SHI Linlin.Strength of large aggregate concrete under dynamic triaxial compression-compression-tension stress state[J].Journal of Building Materials,2015,18(5):721-726.
[14]卜静武,徐慧颖,羌宇杰,等.橡胶混凝土轴拉破坏过程中声发射特性[J].建筑科学与工程学报,2022,39(2):78-86.
BU Jingwu,XU Huiying,QIANG Yujie,et al.Acoustic emission characteristics of rubber concrete in axial tension process[J].Journal of Architecture and Civil Engineering,2022,39(2):78-86.
[15]DAS A K,LAI T T,CHAN C W,et al.A new non-linear framework for localization of acoustic sources[J].Structural Health Monitoring,2019,18(2):590-601.
[16]王桂林,王润秋,孙 帆,等.单轴压缩下溶隙灰岩声发射RA-AF特征及破裂模式研究[J].中国公路学报,2022,35(8):118-128.
WANG Guilin,WANG Runqiu,SUN Fan,et al.RA-AF characteristics of acoustic emission and failure mode of karst-fissure limestone under uniaxial compression[J].China Journal of Highway and Transport,2022,35(8):118-128.
[17]周逸飞,朱 星,刘文德.基于声发射和高斯混合模型的灰岩破裂特征识别研究[J].水利水电技术,2019,50(11):131-140.
ZHOU Yifei,ZHU Xing,LIU Wende.Identification of cracking characteristics of limestone under uniaxial compression condition using acoustic emission and GMM[J].Water Resources and Hydropower Engineering,2019,50(11):131-140.
[18]FARHIDZADEH A,SALAMONE S,SINGLA P.A probabilistic approach for damage identification and crack mode classification in reinforced concrete structures[J].Journal of Intelligent Material Systems and Structures,2013,24(14):1722-1735.
[19]王 刚,宋磊博,刘夕奇,等.非贯通节理花岗岩剪切断裂力学特性及声发射特征研究[J].岩土力学,2022,43(6):1533-1545.
WANG Gang,SONG Leibo,LIU Xiqi,et al.Shear fracture mechanical properties and acoustic emission characteristics of discontinuous jointed granite[J].Rock and Soil Mechanics,2022,43(6):1533-1545.

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Last Update: 2024-05-20