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    空心圆柱扭剪试验中广义应力路径的控制与实现

    董彤, 郑颖人, 孔亮, 柘美

    董彤, 郑颖人, 孔亮, 柘美. 空心圆柱扭剪试验中广义应力路径的控制与实现[J]. 岩土工程学报, 2017, 39(s1): 106-110. DOI: 10.11779/CJGE2017S1021
    引用本文: 董彤, 郑颖人, 孔亮, 柘美. 空心圆柱扭剪试验中广义应力路径的控制与实现[J]. 岩土工程学报, 2017, 39(s1): 106-110. DOI: 10.11779/CJGE2017S1021
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    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
    shu

    空心圆柱扭剪试验中广义应力路径的控制与实现  English Version

    • 1. 后勤工程学院岩土力学与地质环境保护重庆市重点实验室,重庆 401311;
      2. 重庆市地质灾害防治工程技术研究中心,重庆 400041;
      3. 青岛理工大学理学院,山东 青岛 266033;
      4. 重庆交通大学土木建筑学院,重庆 400074

    基金项目: 国家自然科学基金项目（11572165）
    详细信息
      作者简介:

      董彤（1990-）,男,山东新泰人,博士研究生,主要从事岩土本构关系方面的研究。E-mail：dt0706@126.com。

    Control and realization of generalized stress paths in HCA test

    • 1. Chongqing Key Laboratory of Geomechanics Geoenvironmental Protection,Logistical Engineering University, Chongqing 401311, China;
      2. Chongqing Engineering and Technology Research Center of Geological Hazard Prevention and Treatment, Chongqing 400041, China;
      3. School of Sciences, Qingdao University of Technology, Qingdao 266033, China;
      4. Institute of Civil Engineering and Construction, Chongqing Jiao Tong University, Chongqing 400074, China

    摘要

      摘要
    • 摘要: 针对国内外动态空心圆柱扭剪仪（HCA）在设置广义应力路径时大都需要人为假设外荷载加载形式的现状,指出了这种假定对HCA仪模拟广义应力路径能力的局限。考虑到GCTS公司HCA-100能够独立地控制轴力、扭矩及内外围压独立地加载,通过缜密的数学推导,提出了由目标广义应力路径直接确定外荷载加载方式的计算公式,据此可以实现对任意形式的广义应力路径的模拟并通过试验验证了其可行性。在三维应力坐标系中,探讨了典型广义应力路径的表示方法,以恒定的主应力轴连续旋转的应力路径为例,讨论了内、外围压与广义应力路径之间的关系。简化并完善了HCA仪的控制过程,为后续试验研究提供了理论依据。
      Abstract: 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.
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      • 参考文献(10)
    • [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))
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      [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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    出版历程
    • 收稿日期:  2016-11-27
    • 发布日期:  2017-11-19

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