| 膨胀性泥岩的非线性强度变形特性试验研究 |
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| 引用本文： | 李杭州,廖红建. 膨胀性泥岩的非线性强度变形特性试验研究[J]. 地下空间与工程学报, 2007, 3(1): 19-22 |
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| 作者姓名： | 李杭州 廖红建 |
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| 作者单位： | 西安交通大学土木工程系,西安,710049;西安交通大学土木工程系,西安,710049;中国科学院武汉岩土力学研究所,武汉,430071 |
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| 基金项目： | 国家自然科学基金 , 中国科学院重点实验室基金 |
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| 摘 要： | 膨胀性泥岩在不同围压下的固结不排水三轴试验的结果表明泥岩的应力应变关系呈应变软化特性,峰值强度、残余强度及残余强度比均随围压的增大而增大.根据应力应变关系的试验结果,分析了膨胀性泥岩的割线模量和发挥内摩擦角,结果表明割线模量和发挥内摩擦角均随围压的变化而变化,且拟合了割线模量和发挥内摩擦角与应变的关系.
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| 关 键 词： | 膨胀性泥岩 非线性 割线模量 内摩擦角 |
| 文章编号： | 1673-0836（2007）01-0019-04 |
| 修稿时间： | 2006-08-10 |
Experimental Study on Nonlinear Strength Deformation Characteristic of Expansive Mudstone |
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| LI Hang-zhou,LIAO Hong-Jian. Experimental Study on Nonlinear Strength Deformation Characteristic of Expansive Mudstone[J]. Chinese Journal of Underground Space and Engineering, 2007, 3(1): 19-22 |
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| Authors: | LI Hang-zhou LIAO Hong-Jian |
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| Abstract: | The results of undrained consolidated triaxial tests of expansive mudstone under different confining stress show that the stress-strain relationships have the characteristic of strain softening and the peak strength,residual strength and residual strength ratio increase with the increasing of confining stress.According to experimental results of stress-strain relationships,the secant modulus and mobilized internal friction angle are analyzed,and the results show that the modulus and mobilized friction angle change with variation of the strain,furthermore,equations between them and the strain are fitted.The factors that affected non-linear strength characteristic were analyzed. |
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| Keywords: | expansive mudstone non-linearity secant modulus internal friction angle |
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