| 不同应力状态下红粘土的强度特性分析 |
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| 引用本文： | 郑焱,王丽锋,谢新柱.不同应力状态下红粘土的强度特性分析[J].企业技术开发,2009,28(4). |
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| 作者姓名： | 郑焱 王丽锋 谢新柱 |
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| 作者单位： | 郑焱,谢新柱,ZHENG Yan,XIE Xin-zhu(山东通达路桥工程有限公司,山东,荷泽,274000);王丽锋,WANG Li-feng(中交第四公路工程局,北京,100123)
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| 摘 要： | 通过对不同深度红粘土试样进行固结不排水三轴剪切试验,分析红粘土在不同应力状态下应力应变变形,其结果表明:应力峰值出现在应变约2%处;围压越大,其屈服破坏的偏应力值越大,土体抵抗变形的能力越强;不同深度处土层,由应力应变反映出红粘土的固结特性不同;且随着土层深度的增加,红粘土的粘聚力增大,而摩擦角减小。
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| 关 键 词： | 红粘土 三轴剪切试验 应力应变关系 粘聚力 摩擦角 |
Analysis of red clay strength characteristic under different stress states |
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| ZHENG Yan,WANG Li-feng,XIE Xin-zhu.Analysis of red clay strength characteristic under different stress states[J].Technological Development of Enterprise,2009,28(4). |
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| Authors: | ZHENG Yan WANG Li-feng XIE Xin-zhu |
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| Institution: | 1.Shandong Tongda Road and Bridge Engineering Limit Company;Hezhe;Shandong 274000;China;2.Fourth Highway Engineering Co.;Ltd.;Beijing 100123;China |
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| Abstract: | Through some consolidation undrain triaxial shear tests on the different depth natural structural red clay samples, it is discussed of red clay stress and strain relation under different stress states. The results show that the maximum stresses arise when strains of soil sample reach about 2%. Deviatoric stress leading to soil yield failure will increase with confining pressure increasing, which can make soil resist bigger distortion. The consolidation character of red clay is different with soil depth incr... |
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| Keywords: | red clay triaxial shear test stress- strain relationship cohesion friction angle |
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