|本期目录/Table of Contents|

[1]邱璐璐,刘晓斐,周 鑫,等.多级循环加卸载混凝土损伤特征及声学研究[J].建筑科学与工程学报,2023,40(05):43-51.[doi:10.19815/j.jace.2022.02026]
　QIU Lulu,LIU Xiaofei,ZHOU Xin,et al.Research on damage characteristics and acoustics of concrete under multi-stage cyclic loading and unloading[J].Journal of Architecture and Civil Engineering,2023,40(05):43-51.[doi:10.19815/j.jace.2022.02026]
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多级循环加卸载混凝土损伤特征及声学研究(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
40卷
期数:
2023年05期
页码:
43-51
栏目:
建筑材料
出版日期:
2023-09-15

文章信息/Info

Title:
Research on damage characteristics and acoustics of concrete under multi-stage cyclic loading and unloading
文章编号:
1673-2049(2023)05-0043-09
作者:
邱璐璐1,2,刘晓斐1,2,周 鑫1,2,王笑然1,2,张思清1,2
(1. 中国矿业大学 煤矿瓦斯与火灾防治教育部重点实验室,江苏 徐州 221116; 2. 中国矿业大学 安全工程学院,江苏 徐州 221116)
Author(s):
QIU Lulu1,2, LIU Xiaofei1,2, ZHOU Xin1,2, WANG Xiaoran1,2, ZHANG Siqing1,2
(1. Key Laboratory of Gas and Fire Control for Coal Mines, Ministry of Education, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China; 2. School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China)
关键词:
混凝土;  多级循环加卸载;  力学特性;  声学前兆;  声发射b值
Keywords:
concrete;  multi-stage cyclic loading and unloading;  mechanical property;  acoustic precursor;  acoustic emission b-value
分类号:
TU528
DOI:
10.19815/j.jace.2022.02026
文献标志码:
A
摘要:
为研究多级循环加卸载下混凝土损伤声学前兆响应及失稳破坏机理,构建了多级循环加卸载混凝土损伤声学试验系统,试验全程借助声发射监测技术,测试分析了不同加卸载幅度(2-4-6-8 MPa,3-6-9-12 MPa)下混凝土的力学特性、损伤演化特征及声学前兆响应规律,揭示循环加卸载条件下混凝土试样的损伤破坏机理。结果表明:多级循环加卸载下混凝土变形破坏过程可分为初始压密、弹性变形、扰动损伤、塑性变形和失稳破坏阶段,循环加卸载幅度为2-4-6-8 MPa时造成的累积损伤不会破坏混凝土试样,而幅度为3-6-9-12 MPa时可破坏试样; 多级循环加卸载会加速高应力状态下混凝土试样损伤破坏过程,增大其内部所积聚的能量,致使微破裂事件增多、声发射振铃计数更加活跃,且加卸载幅度越大试样破坏过程越剧烈,最终破裂也越严重; 在多级循环加卸载阶段,声发射时频参数表现出明显的Kaiser效应; 试样破坏前其声发射时频参数会出现突增现象,并与加卸载幅度呈正比关系; 声发射b值在临近应力峰值阶段呈下降趋势,预示着主破裂的来临,在试样发生主破裂后快速下降直至最低值。
Abstract:
In order to study the acoustic precursor response and instability failure mechanism of concrete damage under multi-stage cyclic loading and unloading, a multi-stage cyclic loading and unloading concrete damage acoustic test system was constructed. The mechanical properties, damage evolution characteristics and acoustic precursor response laws of concrete under different loading and unloading amplitudes(2-4-6-8 MPa, 3-6-9-12 MPa)were analyzed by using acoustic emission monitoring technology throughout test, and the damage failure mechanism of concrete samples under cyclic loading and unloading conditions was revealed. The results show that the deformation and failure process of concrete under multi-stage cyclic loading and unloading can be divided into initial compaction, elastic deformation, multi-stage cyclic loading and unloading damage, plastic deformation and instability failure stage. The cumulative damage caused by the cyclic loading and unloading amplitude of 2-4-6-8 MPa can not destroy the concrete sample, while the amplitude of 3-6-9-12 MPa can destroy the sample. The multi-stage cyclic loading and unloading can accelerate the damage and failure process of the concrete sample, increase the energy accumulated inside the sample and the number of micro-fracture events, make the acoustic emission ring count more active. The larger the loading and unloading amplitude, the more severe the failure process and the final rupture degree of the sample. The multi-stage cyclic loading and unloading stage has obvious Kaiser effect. Before the sample is destroyed, the acoustic emission time-domain and frequency-domain parameters will have a sudden increase, which is proportional to the loading and unloading amplitude. Near the stress peak stage, the acoustic emission b-value shows a downward trend, indicating the arrival of the main rupture. After the stress peak, the concrete sample has a main rupture, and the acoustic emission b-value rapidly drops to the lowest value.

参考文献/References:

[1] 郑元勋,郭慧吉,谢 宁.基于统计分析的桥梁坍塌事故原因剖析及预防措施研究[J].中外公路,2017,37(6):125-133.
ZHENG Yuanxun,GUO Huiji,XIE Ning.Cause analysis and preventive measures of bridge collapse accident based on statistical analysis[J].Journal of China & Foreign Highway,2017,37(6):125-133.
[2]赵少杰,唐细彪,任伟新.桥梁事故的统计特征分析及安全风险防控原则[J].铁道工程学报,2017,34(5):59-64.
ZHAO Shaojie,TANG Xibiao,REN Weixin.The statistical characteristics analysis of bridge accidents and prevention principle of security risk[J].Journal of Railway Engineering Society,2017,34(5):59-64.
[3]桂志敬.美国明尼苏达州钢桁架拱桥坍塌事故回顾[J].中外公路,2012,32(2):138-140.
GUI Zhijing.Review of collapse accident of steel truss arch bridge in Minnesota,USA[J].Journal of China & Foreign Highway,2012,32(2):138-140.
[4]林广元.韩国汉城一座桥梁的坍塌事故[J].国外桥梁,1995,23(3):225-226.
LIN Guangyuan.The collapse of a bridge in Seoul,South Korea[J].Foreign Bridges,1995,23(3):225-226.
[5]王跃年,胡海波.明尼阿波利斯市州际公路Ⅰ-35W大桥坍塌事故调查[J].世界桥梁,2008,36(4):68-69.
WANG Yuenian,HU Haibo.Investigation on the collapse accident of Ⅰ-35W bridge on interstate highway in Minneapolis[J].World Bridges,2008,36(4):68-69.
[6]张楚汉,金 峰,王进廷,等.高混凝土坝抗震安全评价的关键问题与研究进展[J].水利学报,2016,47(3):253-264.
ZHANG Chuhan,JIN Feng,WANG Jinting,et al.Key issues and developments on seismic safety evaluation of high concrete dams[J].Journal of Hydraulic Engineering,2016,47(3):253-264.
[7]李洪亚,杨渝南,刘 杰,等.多级循环加卸载作用下砂岩变形规律试验研究[J].地下空间与工程学报,2020,16(6):1636-1645.
LI Hongya,YANG Yunan,LIU Jie,et al.Experimental study on deformation law of sandstone under multi-stage cyclic loading and unloading[J].Chinese Journal of Underground Space and Engineering,2020,16(6):1636-1645.
[8]李志成,刘建锋,边 宇,等.三轴循环加卸载过程中盐岩声发射演化特征分析[J].地下空间与工程学报,2017,13(6):1566-1572.
LI Zhicheng,LIU Jianfeng,BIAN Yu,et al.Characteristic analysis on rock salt account emission evaluation in the triaxial loading and unloading process[J].Chinese Journal of Underground Space and Engineering,2017,13(6):1566-1572.
[9]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.
[10]刘娟红,周昱程,纪洪广.单轴加卸载作用下井壁混凝土能量演化机理[J].煤炭学报,2018,43(12):3364-3370.
LIU Juanhong,ZHOU Yucheng,JI Hongguang.Energy evolution mechanism of shaft wall concrete under uniaxial loading and unloading compression[J].Journal of China Coal Society,2018,43(12):3364-3370.
[11]徐松林,王鹏飞,单俊芳,等.真三轴静载作用下混凝土的动态力学性能研究[J].振动与冲击,2018,37(15):59-67.
XU Songlin,WANG Pengfei,SHAN Junfang,et al.Dynamic behavior of concrete under static tri-axial loadings[J].Journal of Vibration and Shock,2018,37(15):59-67.
[12]郑 丹,王海龙,李庆斌.惯性与黏性对动载下混凝土强度的作用机理[J].水力发电学报,2018,37(8):85-93.
ZHENG Dan,WANG Hailong,LI Qingbin.Mechanism of inertia and viscosity effects on concrete strength under dynamic loading[J].Journal of Hydroelectric Engineering,2018,37(8):85-93.
[13]CHEN X D,WU S X,ZHOU J K.Large-beam tests on mechanical behavior of dam concrete under dynamic loading[J].Journal of Materials in Civil Engineering,2015,27(10):06015001.
[14]HUANG Z,LI Y,LIU Y C,et al.Experimental evaluation of the influence of early disturbance on the performance of basalt fiber concrete[J].Advances in Civil Engineering,2020,2020:1-9.
[15]ISHIDA T,LABUZ J F,MANTHEI G,et al.ISRM suggested method for laboratory acoustic emission monitoring[J].Rock Mechanics and Rock Engineering,2017,50(3):665-674.
[16]纪洪广,裴广文,单晓云.混凝土材料声发射技术研究综述[J].应用声学,2002,21(4):1-5.
JI Hongguang,PEI Guangwen,SHAN Xiaoyun.Technique of acoustic emission for concrete material[J].Journal of Applied Acoustics,2002,21(4):1-5.
[17]王笑然,王恩元,刘晓斐,等.裂隙砂岩裂纹扩展声发射响应及速率效应研究[J].岩石力学与工程学报,2018,37(6):1446-1458.
WANG Xiaoran,WANG Enyuan,LIU Xiaofei,et al.Macro-crack propagation process and corresponding AE behaviors of fractured sandstone under different loading rates[J].Chinese Journal of Rock Mechanics and Engineering,2018,37(6):1446-1458.
[18]董陇军,张义涵,孙道元,等.花岗岩破裂的声发射阶段特征及裂纹不稳定扩展状态识别[J].岩石力学与工程学报,2022,41(1):120-131.
DONG Longjun,ZHANG Yihan,SUN Daoyuan,et al.Stage characteristics of acoustic emission and identification of unstable crack state for granite fractures[J].Chinese Journal of Rock Mechanics and Engineering,2022,41(1):120-131.
[19]DU F Z,LI D S,SHAN B H,et al.Failure behavior monitoring and evaluation of steel-confined reinforced concrete columns by acoustic emission under quasi-static loading[J].Latin American Journal of Solids and Structures,2018,15(11):e132.
[20]赖于树,熊 燕,程龙飞.受载混凝土破坏全过程声发射信号频带能量特征[J].振动与冲击,2014,33(10):177-182.
LAI Yushu,XIONG Yan,CHENG Longfei.Frequency band energy characteristics of acoustic emission signals in damage process of concrete under uniaxial compression[J].Journal of Vibration and Shock,2014,33(10):177-182.
[21]FAN X Q,HU S W,LU J,et al.Acoustic emission properties of concrete on dynamic tensile test[J].Construction and Building Materials,2016,114:66-75.
[22]BEHNIA A,CHAI H K,SHIOTANI T.Advanced structural health monitoring of concrete structures with the aid of acoustic emission[J].Construction and Building Materials,2014,65:282-302.
[23]WANG X R,WANG E Y,LIU X F.Damage characterization of concrete under multi-step loading by integrated ultrasonic and acoustic emission techniques[J].Construction and Building Materials,2019,221:678-690.
[24]王笑然,王恩元,刘晓斐,等.混凝土损伤演化声发射和超声波时-频-空联合响应[J].中国矿业大学学报,2019,48(2):268-277.
WANG Xiaoran,WANG Enyuan,LIU Xiaofei,et al.Time-frequency-space response of damage evolution for concrete based on AE-UT joint monitoring under step-loading[J].Journal of China University of Mining & Technology,2019,48(2):268-277.
[25]丁 鑫,肖晓春,吕祥锋,等.煤岩破裂过程声发射时-频信号特征与演化机制[J].煤炭学报,2019,44(10):2999-3011.
DING Xin,XIAO Xiaochun,LÜ Xiangfeng,et al.Characteristics and evolution mechanism of acoustic emission time-frequency signal during coal failure process[J].Journal of China Coal Society,2019,44(10):2999-3011.
[26]胡伟华,彭 刚,黄仕超,等.基于声发射技术的混凝土动态损伤特性研究[J].长江科学院院报,2015,32(2):123-127,132.
HU Weihua,PENG Gang,HUANG Shichao,et al.Dynamic damage features of concrete based on acoustic emission technology[J].Journal of Yangtze River Scientific Research Institute,2015,32(2):123-127,132.
[27]李 楠,王恩元,赵恩来,等.岩石循环加载和分级加载损伤破坏声发射实验研究[J].煤炭学报,2010,35(7):1099-1103.
LI Nan,WANG Enyuan,ZHAO Enlai,et al.Experiment on acoustic emission of rock damage and fracture under cyclic loading and multi-stage loading[J].Journal of China Coal Society,2010,35(7):1099-1103.
[28]武 丹,金贤玉,付传清,等.锈蚀钢筋混凝土柱荷载损伤的声发射b值研究[J].混凝土,2016(12):5-8,11.
WU Dan,JIN Xianyu,FU Chuanqing,et al.Study on b-value of acoustic emission during corroded reinforced concrete column failure process[J].Concrete,2016(12):5-8,11.

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　LIU Han-kun,SUN Chao,LI Jie.Three-demensional Mesoscopic Numerical Simulation of Concrete Based on CT Scan[J].Journal of Architecture and Civil Engineering,2010,27(05):54.

备注/Memo

备注/Memo:
收稿日期:2022-02-13
基金项目:国家自然科学基金项目(52174218,52227901)
通信作者:刘晓斐(1981-),男,工学博士,教授,博士生导师,E-mail:liuxiaofei@cumt.edu.cn。
更新日期/Last Update: 2023-09-01