| 岩土类软化材料的柱形孔扩张统一解问题 |
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| 引用本文： | 蒋明镜,沈珠江.岩土类软化材料的柱形孔扩张统一解问题[J].岩土力学,1996,17(1):1-8. |
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| 作者姓名： | 蒋明镜 沈珠江 |
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| 作者单位： | 南京水利科学研究院土工所 |
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| 摘 要： | 用应力一次跌落应变软化模型来模拟岩土软化材料特性，采用双剪统一强度理论的屈眼函数形式，推导了柱形孔扩张问题应力场及位移场的统一计算公式，分析了不同模型、不同软化程度对柱形孔扩张时应力、位移及塑性区开展规律的影响。
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| 关 键 词： | 岩土材料 软化 应力跌落模型 双剪统一强度理论 柱形孔扩张统一解 |
Unified Solution to Expansion of Cylindrical Cavity for Geomaterials with Strain-softening Behaviour |
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| Jiang Mingjing, Shen Zhujiang.Unified Solution to Expansion of Cylindrical Cavity for Geomaterials with Strain-softening Behaviour[J].Rock and Soil Mechanics,1996,17(1):1-8. |
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| Authors: | Jiang Mingjing Shen Zhujiang |
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| Institution: | Geotechnical Engineering Dept.. Nanjing Hydraulic Research Institute. 210024 |
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| Abstract: | In this paper, a stress-dropping strain-softening model is proposed based on strain-softening behaviour of geomaterials. fly using yield function with the form of twin shear stress unified strength theory.unified formulas for calculating stress and displacement fields are derived for expansion of cylindrical cavity ininfinite mass. The effect of different parameters of strain-softening, yield functions on stress and dlsljlacement fields, development of plastic zone is analyzed using the derived formulas. |
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| Keywords: | geomaterials strain-softening stress-dropping model twin shear unified strength theory expansion of cylindrical cavity unified solution |
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