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首页> 外文会议>GeoShanghai International Conference; 20060606-08; Shanghai(CN) >An Experimental Study on the Shear Strength of Undisturbed Loess
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An Experimental Study on the Shear Strength of Undisturbed Loess

机译：原状黄土抗剪强度的试验研究

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摘要

On the basis of the double-stress-state variable theory, the consolidated drained shear tests on undisturbed unsaturated loess with suction control were conducted using direct shear apparatus. From the tests results, influence of net vertical pressure and matric suction on the shear strength for undisturbed unsaturated loess was found directly. Thus measuring soil-water characteristic curve was avoided to obtain the shear strength indirectly and the test process for unsaturated soil strength was simplified. Based on these tests results, we have obtained the shear strength characteristics of undisturbed unsaturated loess and relevant relationship curve under different matric suction and proposed a new equation for shear strength expressed as a function of net pressure and matric suction. All coefficients in this equation are determined.
机译：在双应力状态变量理论的基础上，采用直接剪切装置对带吸力控制的未扰动黄土进行了固结排水剪切试验。根据试验结果，直接发现净竖向压力和基质吸力对未扰动黄土的抗剪强度的影响。这样就避免了测量土-水特征曲线，从而间接获得抗剪强度，简化了非饱和土强度的测试过程。基于这些测试结果，我们获得了不同基质吸力下未扰动黄土的抗剪强度特性及相关关系曲线，并提出了一个由净压力和基质吸力表示的抗剪强度新方程。确定该方程式中的所有系数。

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