基于DIC方法研究混凝土劈裂的变形和破坏

任会兰 杜一宁 宋水舟

任会兰, 杜一宁, 宋水舟. 基于DIC方法研究混凝土劈裂的变形和破坏[J]. 高压物理学报, 2022, 36(4): 044104. doi: 10.11858/gywlxb.20220509
引用本文: 任会兰, 杜一宁, 宋水舟. 基于DIC方法研究混凝土劈裂的变形和破坏[J]. 高压物理学报, 2022, 36(4): 044104. doi: 10.11858/gywlxb.20220509
REN Huilan, DU Yining, SONG Shuizhou. Deformation and Failure of Concrete Splitting Based on DIC Method[J]. Chinese Journal of High Pressure Physics, 2022, 36(4): 044104. doi: 10.11858/gywlxb.20220509
Citation: REN Huilan, DU Yining, SONG Shuizhou. Deformation and Failure of Concrete Splitting Based on DIC Method[J]. Chinese Journal of High Pressure Physics, 2022, 36(4): 044104. doi: 10.11858/gywlxb.20220509

基于DIC方法研究混凝土劈裂的变形和破坏

doi: 10.11858/gywlxb.20220509
基金项目: 国家自然科学基金(12072028)
详细信息
    作者简介:

    任会兰(1973-),女,教授,主要从事冲击动力学研究. E-mail:huilanren@bit.edu.cn

    通讯作者:

    杜一宁(1997-),女,硕士研究生,主要从事冲击动力学研究. E-mail:1041142453@qq.com

  • 中图分类号: O521.3; O347

Deformation and Failure of Concrete Splitting Based on DIC Method

  • 摘要: 混凝土是一种典型的拉压不对称准脆性复合材料,采用巴西劈裂试验研究其拉伸破坏时发现,不同加载方式对混凝土的变形和破坏特征的影响很大。通过直接加载、弧形垫块加载以及平台圆盘加载3种方式对混凝土圆盘试件进行准静态试验,基于数字图像相关法,研究混凝土拉伸劈裂破坏过程中的全场变形和局域化破坏特征。结果表明:(1) 标准圆盘直接加载时,试件顶部和底部附近的应力集中使试件端部先发生损伤,拉伸应变场中的高幅值区从加载端向中心迅速扩展;而采用弧形垫块或平台圆盘加载优化了应力集中问题,使得试件中心最先出现应变集中,继续加载时损伤向两端扩展,导致试件劈裂破坏。(2) 弧形垫块加载和平台圆盘加载满足了巴西劈裂试验的中心起裂假设。测得平台圆盘加载时混凝土试件的抗拉强度约为5 MPa, 比标准圆盘加载提高了31.2%左右,分析认为平台圆盘加载提高了试件中心的压拉比以及加载端处的摩擦力。(3) 3种加载方式下,混凝土试件中心位置变形的数字图像相关分析结果和应变试验测量结果吻合较好,验证了基于数字图像相关方法获得的混凝土试件全场变形的有效性。

     

  • 图  试验系统示意图

    Figure  1.  Schematic of test system

    图  混凝土试件正面散斑(a)和反面应变片(b)

    Figure  2.  Concrete specimen with speckle on the front (a) and strain gauge on the back (b)

    图  标准圆盘的载荷-时间曲线

    Figure  3.  Load-time curve of standard disk

    图  标准圆盘的拉伸应变场演化

    Figure  4.  Evolution of tensile strain field of standard disk

    图  弧形垫块加载下标准圆盘的载荷-时间曲线

    Figure  5.  Load-time curves of standard disks between loading arcs

    图  弧形垫块加载下标准圆盘的拉伸应变场演化

    Figure  6.  Evolution of tensile strain field of standard disks between loading arcs

    图  平台圆盘载荷-时间曲线

    Figure  7.  Load-time curves of flattened disk

    图  平台圆盘拉伸应变场演化

    Figure  8.  Evolution of tensile strain field of flattened disk

    图  准静态劈裂试验得到的试样载荷-时间曲线

    Figure  9.  Load-time curves of specimen inquasi-static splitting test

    图  10  DIC结果与应变计测量结果的对比

    Figure  10.  Comparison between tensile strain determined from DIC analysis and that measured by strain gauges

    表  1  混凝土试件的配合比

    Table  1.   Mix proportion of concrete specimen

    MaterialProportion/(kg·m–3)
    Cement398.93
    Water195.00
    Fine aggregate632.12
    Coarse aggregate1173.95
    下载: 导出CSV

    表  2  3种圆盘加载试验得到的抗拉强度

    Table  2.   Tensile strength of three disc loading test

    No.Loading methodspc/kNTensile strength/MPaAverage tensile strength/MPa
    BD-01Standard disk
    direct loading
    31.8684.0583.836
    BD-0231.3743.995
    BD-0329.8063.795
    BD-0429.6223.772
    BD-0529.3823.741
    BD-0628.6883.653
    ArcBD-01Standard disk
    arc loading
    31.3423.8514.007
    ArcBD-0235.2334.328
    ArcBD-0330.6473.765
    ArcBD-0433.7884.151
    ArcBD-0532.2773.965
    ArcBD-0632.4163.982
    FBD-01Flattened disk loading40.4004.9145.031
    FBD-0238.2354.651
    FBD-0339.7534.836
    FBD-0444.4175.403
    FBD-0543.8545.334
    FBD-0641.5115.050
    下载: 导出CSV
  • [1] PETERS W H, RANSON W F. Digital imaging techniques in experimental stress analysis [J]. Optical Engineering, 1982, 21(3): 213427. doi: 10.1117/12.7972925
    [2] 马少鹏, 金观昌, 潘一山. 白光DSCM方法用于岩石变形观测的研究 [J]. 实验力学, 2002, 17(1): 10–16. doi: 10.3969/j.issn.1001-4888.2002.01.002

    MA S P, JIN G C, PAN Y S. Study on the white light DSCM method for deformation measurement of rock materials [J]. Journal of Experimental Mechanics, 2002, 17(1): 10–16. doi: 10.3969/j.issn.1001-4888.2002.01.002
    [3] 雷冬, 乔丕忠. 混凝土压缩破坏的数字图像相关研究 [J]. 力学季刊, 2011, 32(2): 173–177. doi: 10.15959/j.cnki.0254-0053.2011.02.003

    LEI D, QIAO P Z. Study on compression damage of concrete using digital image correlation method [J]. Chinese Quarterly of Mechanics, 2011, 32(2): 173–177. doi: 10.15959/j.cnki.0254-0053.2011.02.003
    [4] 俞鑫炉, 付应乾, 董新龙, 等. 混凝土一维应力层裂实验的全场DIC分析 [J]. 力学学报, 2019, 51(4): 1064–1072. doi: 10.6052/0459-1879-19-008

    YU X L, FU Y Q, DONG X L, et al. Full field DIC analysis of one-dimensional spall strength for concrete [J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(4): 1064–1072. doi: 10.6052/0459-1879-19-008
    [5] 徐纪鹏, 董新龙, 付应乾, 等. 不同加载边界下混凝土巴西劈裂过程及强度的DIC实验分析 [J]. 力学学报, 2020, 52(3): 864–876. doi: 10.6052/0459-1879-19-303

    XU J P, DONG X L, FU Y Q, et al. Experimental analysis of process and tensile strength for concrete Brazilian splitting test with different loading boundaries by DIC method [J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(3): 864–876. doi: 10.6052/0459-1879-19-303
    [6] KOURKOULIS S K, MARKIDES C F, CHATZISTERGOS P E. The standardized Brazilian disc test as a contact problem [J]. International Journal of Rock Mechanics and Mining Sciences, 2013, 57: 132–141. doi: 10.1016/j.ijrmms.2012.07.016
    [7] 马永尚, 陈卫忠, 杨典森, 等. 基于三维数字图像相关技术的脆性岩石破坏试验研究 [J]. 岩土力学, 2017, 38(1): 117–123. doi: 10.16285/j.rsm.2017.01.015

    MA Y S, CHEN W Z, YANG D S, et al. Experimental study of brittle rock failure based on three-dimensional digital image correlation technique [J]. Rock and Soil Mechanics, 2017, 38(1): 117–123. doi: 10.16285/j.rsm.2017.01.015
    [8] 卿龙邦, 曹国瑞, 管俊峰. 基于DIC方法的混凝土允许损伤尺度试验研究 [J]. 工程力学, 2019, 36(10): 115–121. doi: 10.6052/j.issn.1000-4750.2018.09.0500

    QING L B, CAO G R, GUAN J F. Experimental investigation of the concrete permissible damage scale based on the digital image correlation method [J]. Engineering Mechanics, 2019, 36(10): 115–121. doi: 10.6052/j.issn.1000-4750.2018.09.0500
    [9] 王凡, 赵亮, 吴晓东, 等. 基于CT及数字图像相关法的混凝土变形场测量分析 [J]. 激光与光电子学进展, 2020, 57(20): 200401. doi: 10.3788/LOP57.200401

    WANG F, ZHAO L, WU X D, et al. Measurement and analysis of concrete deformation field based on CT and digital image correlation method [J]. Laser and Optoelectronics Progress, 2020, 57(20): 200401. doi: 10.3788/LOP57.200401
    [10] GARCÍA V J, MÁRQUEZ C O, ZÚÑIGA-SUÁREZ A R, et al. Brazilian test of concrete specimens subjected to different loading geometries: review and new insights [J]. International Journal of Concrete Structures and Materials, 2017, 11(2): 343–363. doi: 10.1007/s40069-017-0194-7
    [11] ERARSLAN N, WILLIAMS D J. Experimental, numerical and analytical studies on tensile strength of rocks [J]. International Journal of Rock Mechanics and Mining Sciences, 2012, 49: 21–30. doi: 10.1016/j.ijrmms.2011.11.007
    [12] MA C C, HUNG K M. Exact full-field analysis of strain and displacement for circular disks subjected to partially distributed compressions [J]. International Journal of Mechanical Sciences, 2008, 50(2): 275–292. doi: 10.1016/j.ijmecsci.2007.06.005
    [13] HUNG K M, MA C C. Theoretical analysis and digital photoelastic measurement of circular disks subjected to partially distributed compressions [J]. Experimental Mechanics, 2003, 43(2): 216–224. doi: 10.1007/BF02410502
    [14] 王启智, 贾学明. 用平台巴西圆盘试样确定脆性岩石的弹性模量、拉伸强度和断裂韧度——第一部分: 解析和数值结果 [J]. 岩石力学与工程学报, 2002, 21(9): 1285–1289. doi: 10.3321/j.issn:1000-6915.2002.09.001

    WANG Q Z, JIA X M. Determination of elastic modulus, tensile strength and fracture toughness of brittle rocks by using flattened Brazilian disk specimen——Part Ⅰ: analytical and numerical results [J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 21(9): 1285–1289. doi: 10.3321/j.issn:1000-6915.2002.09.001
    [15] 黄耀光, 王连国, 陈家瑞, 等. 平台巴西劈裂试验确定岩石抗拉强度的理论分析 [J]. 岩土力学, 2015, 36(3): 739–748, 754. doi: 10.16285/j.rsm.2015.03.018

    HUANG Y G, WANG L G, CHEN J R, et al. Theoretical analysis of flattened Brazilian splitting test for determining tensile strength of rocks [J]. Rock and Soil Mechanics, 2015, 36(3): 739–748, 754. doi: 10.16285/j.rsm.2015.03.018
    [16] KHAVARI P, HEIDARI M. Numerical and experimental studies on the effect of loading angle on the validity of flattened Brazilian disc test [J]. Journal of Geology and Mining Research, 2016, 8(1): 1–12. doi: 10.5897/JGMR15.0243
    [17] 于庆磊, 唐春安, 杨天鸿, 等. 平台中心角对岩石抗拉强度测定影响的数值分析 [J]. 岩土力学, 2008, 29(12): 3251–3255, 3260. doi: 10.3969/j.issn.1000-7598.2008.12.013

    YU Q L, TANG C A, YANG T H, et al. Numerical analysis of influence of central angle of flats on tensile strength of granite in split test with flattened disk [J]. Rock and Soil Mechanics, 2008, 29(12): 3251–3255, 3260. doi: 10.3969/j.issn.1000-7598.2008.12.013
    [18] 尤明庆, 苏承东. 平台巴西圆盘劈裂和岩石抗拉强度的试验研究 [J]. 岩石力学与工程学报, 2004, 23(18): 3106–3112. doi: 10.3321/j.issn:1000-6915.2004.18.014

    YOU M Q, SU C D. Experimental study on split test with flattened disk and tensile strength of rock [J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(18): 3106–3112. doi: 10.3321/j.issn:1000-6915.2004.18.014
    [19] 任会兰, 宁建国, 宋水舟, 等. 基于声发射矩张量分析混凝土破坏的裂纹运动 [J]. 力学学报, 2019, 51(6): 1830–1840. doi: 10.6052/0459-1879-19-170

    REN H L, NING J G, SONG S Z, et al. Investigation on crack growth in concrete by moment tensor analysis of acoustic emission [J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(6): 1830–1840. doi: 10.6052/0459-1879-19-170
    [20] 王一阳, 任会兰, 宋水舟, 等. 基于颗粒流法研究混凝土的劈裂拉伸破坏特性 [J]. 北京理工大学学报, 2021, 42(3): 9. doi: 10.15918/j.tbit1001-0645.2021.048

    WANG Y Y, REN H L, SONG S Z, et al. Study on the splitting tensile failure characteristics of concrete based on the particle flow method [J]. Transactions of Beijing Institute of Technology, 2021, 42(3): 9. doi: 10.15918/j.tbit1001-0645.2021.048
    [21] SATOH Y. Position and load of failure in Brazilian test: a numerical analysis by Griffith criterion [J]. Journal of the Society of Materials Science, Japan, 1987, 36(410): 1219–1224. doi: 10.2472/jsms.36.1219
    [22] 王启智, 吴礼舟. 用平台巴西圆盘试样确定脆性岩石的弹性模量、拉伸强度和断裂韧度——第二部分: 试验结果 [J]. 岩石力学与工程学报, 2004, 23(2): 199–204. doi: 10.3321/j.issn:1000-6915.2002.09.001

    WANG Q Z, WU L Z. Determination of elastic modulus, tensile strength and fracture toughness of britle rocks by using flattened Brazilian disk specimen——Part Ⅱ: experimental results [J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(2): 199–204. doi: 10.3321/j.issn:1000-6915.2002.09.001
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出版历程
  • 收稿日期:  2022-01-28
  • 修回日期:  2022-02-21
  • 录用日期:  2022-02-28
  • 网络出版日期:  2022-07-27
  • 刊出日期:  2022-07-28

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