| 基于统一强度理论的柱形孔扩张问题研究 |
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| 引用本文： | 王延斌,范文,徐栓强.基于统一强度理论的柱形孔扩张问题研究[J].岩土力学,2003(Z2). |
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| 作者姓名： | 王延斌 范文 徐栓强 |
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| 作者单位： | 西安交通大学建筑工程与力学学院 西安710049
(王延斌)，长安大学地测学院 西安710054
(范文)，西安交通大学建筑工程与力学学院 西安710049(徐栓强) |
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| 基金项目： | 国家自然科学基金资助研究项目(59779028)。 |
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| 摘 要： | 考虑了岩土材料的软化和剪胀特性,利用空间轴对称问题的统一强度理论分析了柱形孔扩张问题,求出了岩土材料在柱形孔扩张时的应力场、应变场、位移场和最终扩张压力的统一解表达式。对蒋明镜-沈珠江扩孔公式从不同的方面作了论述。通过算例分析了岩土材料的软化和剪胀特性以及统一强度理论参数对应力场、位移场和扩张压力的影响。已有的关于该问题的Tresca解和Mohr-Coulomb解均为本文的一个特例。
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| 关 键 词： | 软化 剪胀 柱形扩孔 统一强度理论 |
Solution to expansion of cylindrical cavity based on the unified strength theory |
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| WANG Yan-bin,FAN Wen,XU Shuan-qiang.Solution to expansion of cylindrical cavity based on the unified strength theory[J].Rock and Soil Mechanics,2003(Z2). |
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| Authors: | WANG Yan-bin FAN Wen XU Shuan-qiang |
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| Institution: | WANG Yan-bin1,FAN Wen2,XU Shuan-qiang1 |
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| Abstract: | A unified analytical solution to cylindrical cavity expansion is derived by considering the strain-softening and shear dilatation behavior of geomaterials using the unified strength theory (UST, Yu, 1991). The stress fields, stain fields, displacement fields and final expansion pressure are obtained. The effects of strain-softening and shear dilatation behavior of geomaterials and the parameter b of the UST on stress fields, displacement fields and expansion pressure are discussed. The solutions of the Tresca criterion and the Mohr-Coulomb Criterion are special cases of the unified solution. |
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| Keywords: | strain-softening shear dilatation expansion of cylindrical cavity unified strength theory (UST) |
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