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Volume 37 Issue 8
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ZUO Yong-zhen, CHENG Zhan-lin, ZHAO Na. Expansion mechanism of shear bands in phyllite detritus soil by CT technology[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(8): 1524-1531. DOI: 10.11779/CJGE201508024
Citation: ZUO Yong-zhen, CHENG Zhan-lin, ZHAO Na. Expansion mechanism of shear bands in phyllite detritus soil by CT technology[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(8): 1524-1531. DOI: 10.11779/CJGE201508024
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Expansion mechanism of shear bands in phyllite detritus soil by CT technology

  • 1. Yangtze River Scientific Research Institute, Wuhan 430010, China;
    2. Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources, Wuhan 430010, China

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  • Received Date: November 07, 2014
  • Published Date: August 24, 2015
    Graphical Abstract
    • Abstract
  • The emergence and development of soil shear bands is one of the concerned problems of geotechnical engineering. Consolidation drained shear tests on phyllite detritus soils are conducted, and the real-time monitoring scan is performed in the test process by using the CT technology. A series of CT pictures at the same section position are obtained under different strain conditions. It can be observed that the shear band obviously appears in the specimen with the increase of strain from CT slices. Using the CT technology, the process from local crack to form the complete shear bands of specimen is reproduced under the axial force. Through the analysis of the average value of CT number and standard deviation of 7 regions in the CT pictures, it can be found that the range of axial strain of 3%~10% is the main stage for formation and development of shear band . The specimen is mainly compression when the strain is below 3%, but when the strain is over 3%, the specimen gradually shows local crack under the deviatoric stress, and the crack is more and more obvious with the increasing strain. The strain is not equal between the CT statistical values and macro cracks through macroscopic observation. It is suggested that the CT statistical values should be regarded as the criterion to determine the strain of micro cracks in the shear band.
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    • References (21)
  • [1]
    SKEPMTON A W. Long-term stability of clay slopes[J]. Géotechnique, 1964, 14(2): 77-102.
    [2]
    BJERRUM L. Progressive failure in slopes of overconsolidated plas tic clay and clay shales[J]. Journal of the Soil Mechanics and Foundations Division, ASCE, 1967, 93(5): 3-49.
    [3]
    蒋 刚, 李苏春. 南京粉土与粉质黏土的剪切带三轴试验与性状分析[J]. 南京工业大学学报, 2008, 30(5): 7-11. (JIANG Gang, LI Su-chu. Performance analysis on shear band under triaxial test of silt and silty clay in Nanjing[J]. Journal of Nanjing University of Technology, 2008, 30(5): 7-11. (in Chinese))
    [4]
    喻葭临, 孙 逊, 于玉贞, 等. 结构性土中剪切带扩展的模型试验研究[J]. 清华大学学报, 2010, 50(3): 367-371. (YU Jia-lin, SUN Xun, YU Yu-zhen, et al. Experimental study of the evolution of shear bands in structured soil[J]. Journal Tsing hua University, 2010, 50(3): 367-371. (in Chinese))
    [5]
    董建国, 李 蓓, 袁聚云, 等. 上海浅层褐黄色粉质黏土剪切带形成的试验研究[J]. 岩土工程学报, 2001, 23(1): 23-27. (DONG Jian-guo, LI Bei, YUAN Ju-yun, et al. Study of test on the formation of shear bands in Shanghai yellowish dark brown silty clay[J]. Chinese Journal of Geotechnical Engineering, 2001, 23(1): 23-27. (in Chinese))
    [6]
    蒋明镜, 彭立才, 朱合华, 等. 珠海海积软土剪切带微观结构试验研究[J]. 岩土力学, 2010, 31(7): 2017-2024. (JIANG Ming-jing, PENG Li-cai, ZHU He-hua, et al. Microscopic investigation on shear band of marine clay in Zhuhai[J]. Rock and Soil Mechanics, 2010, 31(7): 2017-2024. (in Chinese))
    [7]
    吴羿辰, 杨在峰, 马玉周, 等. 哈密地区夹白山韧性剪切带显微构造特征[J]. 新疆地质, 2010, 28(2): 154-156. (WU Yi-chen, YANG Zai-feng, MA Yu-zhou, et al. Micaostructure characteristics and dynamic analysis of the Jlabaishan ductile Shear Zone Xingjiang Hami District[J]. Xingjiang Geology, 2010, 28(2): 154-156. (in Chinese))
    [8]
    DESRUES J, CHAMBON R, MOKNI M, et al. Void ratio evolution inside shear bands in triaxial sand specimens studied by computed tomography[J]. Géotechnique, 1996, 46(3): 529-546.
    [9]
    TANI K. X-ray computed tomography technique to observe shear banding in dense sands[C]// Proc of Int Symp on Deformation and Progressive Failure in Geomechanics. Nagoya, 1997: 315-320.
    [10]
    FINNO R J, HARRIS W W, MOONEY M A, et al. Shear bands in plane strain compression of loose sand[J]. Géotechnique, 1997, 47(1): 149-165.
    [11]
    OTANI J, MUKUNOKI T, OBARA Y. Application of X-ray CT method for characterization of failure in soils[J]. Soils and Foundations, 2000, 40(2): 111-118.
    [12]
    施 斌, 姜洪涛. 在外力作用下土体内部裂隙发育过程的CT研究[J]. 岩土工程学报, 2000, 22(5): 537-541. (SHI Bin, JIANG Hong-tao. A study on the development of failures inside soil under the external force using CT technique[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(5): 537-541. (in Chinese))
    [13]
    孙 红, 葛修润, 牛富俊, 等. 上海粉质黏土的三轴CT实时细观试验[J]. 岩石力学与工程学报, 2005, 24(24): 4559-4664. (SUN Hong, GE Xiu-run, NIU Fu-jun, et al. Real-Time CT meso-testing on Shanghai silty clay subjected to Trlaxial Loading[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(24): 4559-4664. (in Chinese))
    [14]
    刘增利, 李洪升, 朱元林, 等. 冻土初始与附加细观损伤的CT 识别模型[J]. 冰川冻土, 2002, 24(5): 676-680. (LIU Zeng-li, LI Hong-sheng, ZHU Yuan-lin, et al. A distinguish model for initial and additional micro-damages on frozen soil[J]. Journal Ournal of Glaciology and Geocryology, 2002, 24(5): 676-680. (in Chinese))
    [15]
    黄质宏, 朱立军, 蒲毅彬, 等. 三轴应力条件下红黏土力学特性动态变化的CT分析[J]. 岩土力学, 2004, 25(8): 1215-1219. (HUANG Zhi-Hong, ZHU Li-Jun, PU Yi-bin, et al. CT analysis of dynamic change of mechanical properties of red clay under triaxial stress[J]. Rock and Soil Mechanics, 2004, 25(8): 1215-1219. (in Chinese))
    [16]
    卢再华, 陈正汉, 蒲毅彬. 原状膨胀土损伤演化的三轴CT试验研究[J]. 水利学报, 2002, 6: 106-112. (LU Zai-hua, CHEN Zheng-han, PU Yi-bin. Study on damage evolution of natural expansive soil with computerized tomography during triaxial shear test[J]. Journal of Hydraulic Engineering, 2002, 6: 106-112. (in Chinese))
    [17]
    陈正汉. 非饱和土与特殊土力学的基本理论研究[J]. 岩土工程学报, 2014, 36(2): 201-272. (CHEN Zheng-han. On basic theories of unsaturated soils and special soils[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(2): 201-272. (in Chinese))
    [18]
    陈正汉, 方祥位, 朱元青, 等. 膨胀土和黄土的细观结构及其演化规律研究[J]. 岩土力学, 2009, 30(1): 1-11. (CHEN Zheng-han, FANG Xiang-wei, ZHU Yuan-qing, et al. Research on meso-structures and their evolution laws of expansive soil and loess[J]. Rock and Soil Mechanics, 2009, 30(1): 1-11. (in Chinese))
    [19]
    方祥位, 申春妮, 陈正汉, 等. 原状Q2黄土CT-三轴浸水试验研究[J]. 土木工程学报, 2011, 44(10): 98-106. (FANG Xiang-wei, SHEN Chun-ni, CHEN Zheng-han, et al. Triaxial wetting tests of intact Q2 loess by computed tomography[J]. China Civil Engineering Journal, 2011, 44(10): 98-106. (in Chinese))
    [20]
    SL237—1999 土工试验规程[S]. 1999. (SL237—1999 Specification of soil test[S]. 1999. (in Chinese))
    [21]
    程展林, 吴良平, 丁红顺. 粗粒土组构之颗粒运动研究[J]. 岩土力学, 2007, 28(增刊): 29-33. (CHENG Zhan-lin, WU Liang-ping, DING Hong-shun. Research on movement of particle of fabric of granular material[J]. Rock and Soil Mechanics, 2007, 28(S0): 29-33. (in Chinese))
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