DONG Tong, ZHENG Ying-ren, KONG Liang, ZHE Mei. Control and realization of generalized stress paths in HCA test[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(s1): 106-110. DOI: 10.11779/CJGE2017S1021
    Citation: DONG Tong, ZHENG Ying-ren, KONG Liang, ZHE Mei. Control and realization of generalized stress paths in HCA test[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(s1): 106-110. DOI: 10.11779/CJGE2017S1021

    Control and realization of generalized stress paths in HCA test

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    • Received Date: November 27, 2016
    • Published Date: November 19, 2017
    • Artificial assumptions are needed to set the generalized stress paths in hollow cylinder apparatus (HCA). The resulting limitations to imitate the generalized stress paths in HCA are analyzed. According to the function that GCTS HCA-100 can apply axial loads, torques, inner and outer pressures independently, the method that can determine the external loads directly by the target generalized stress path is put forward. In this way, the generalized stress paths of arbitrary form are presented by the exactly mathematical derivation, and the feasibility is verified by tests. The typical features of the generalized stress path tests are analyzed in 3-D coordinate system b-σ-τ. Based on the cyclic principal stress rotation stress path with constant q, the relationship between the inner and outer pressures and the generalized stress paths is discussed. The controlling process of HCA is simplified and improved, and it may provide a theoretical basis for future tests.
    • [1]
      SAYAO A, VAID Y P. A critical assessment of stress nonuniformities in hollow cylinder test specimens[J]. Soils & Foundations, 2008, 31: 60-72.
      [2]
      刘奉银, 俞茂宏, 殷建华, 等. 双剪统一强度研究的扭剪试验应力路径与控制[J]. 岩石力学与工程学报, 2005, 24(14): 2463-2467. (LIU Feng-yin, YU Mao-hong, YIN Jian-hua, et al. Stress control in hollow cylindrical torsional specimen for study of double shear unified strength[J]. Chinese Journal of Rock Mechanics & Engineering, 2005, 24(14): 2463-2467. (in Chinese))
      [3]
      沈 扬, 周 建, 龚晓南. 空心圆柱仪(HCA)模拟恒定围压下主应力轴循环旋转应力路径能力分析[J]. 岩土工程学报, 2006, 28(3): 281-287. (SHEN Yang, ZHOU Jian, GONG Xiao-nan. Analysis on ability of HCA to imitate cyclic principal stress rotation under constant confining pressure[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(3): 281-287. (in Chinese))
      [4]
      潘 华, 陈国兴. 动态围压下空心圆柱扭剪仪模拟主应力轴旋转应力路径能力分析[J]. 岩土力学, 2011, 32(6): 1701-1706. (PAN Hua, CHEN Guo-xing. Analysis of capabilities of HCA to simulate stress paths for principal stress rotation under dynamic confining pressure[J]. Rock & Soil Mechanics, 2011, 32(6): 1701-1706. (in Chinese))
      [5]
      HIGHT D W, SYMES M J, GENS A. The development of a new hollow cylinder apparatus for investigating the effects of principal stress rotation in soils[J]. Géotechnique, 1983, 33(4): 355-383.
      [6]
      SYMES M J. Drained principal stress rotation in saturated sand[J]. Géotechnique, 1988, 38(1): 58-81.
      [7]
      KUMRUZZAMAN M, YIN J H. Influences of principal stress direction and intermediate principal stress on the stress-strain-strength behaviour of completely decomposed granite[J]. Canadian Geotechnical Journal, 2010, 47(2): 164-179.
      [8]
      SAADA A S. Hollow cylinder torsional devices: their advantages and limitations. Advanced Triaxial Testing of Soil and Rock, American Society for Testing and Materials, 1988: 766-795.
      [9]
      王常晶, 陈云敏. 移动荷载引起的地基应力状态变化及主应力轴旋转[J]. 岩石力学与工程学报, 2007, 26(8): 1698-1704. (WANG Chang-jing, CHEN Yun-min. Stress state variation and principal stress axes rotation of ground induced by moving loads[J]. Chinese Journal of Rock Mechanics & Engineering, 2007, 26(8): 1698-1704. (in Chinese))
      [10]
      TONG Z X, YU Y L, ZHANG J M, et al. Deformation behavior of sands subjected to cyclic rotation of principal stress axes[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(8): 1196-1202.

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