A method for determination of ϕb for statically compacted soils
A method for determination of ϕb for statically compacted soils
复制标题
静力压实土 phib 的测定方法
DOI：
10.1139/t96-006
复制
发表时间：
1996
影响因子：
3.6
通讯作者：
D. Fredlund
中科院分区：
文献类型：
--
作者：
S. Oloo;D. Fredlund
非饱和抗剪强度参数B通常使用三轴直剪仪测定，该三轴直剪仪经过改进，可控制和（或）测量孔隙空气压力和孔隙水压力。使用这些改进的装置表征掺杂B需要相当高水平的专业知识。本文提出了一种确定不同含水量的静力压实土的抗压强度B的简便方法，并附有沿着分析方法。试验可以在常规的直接剪切装置上进行。的非饱和抗剪强度参数，B，使用所提出的程序获得的是可比的，使用修改后的直剪试验。由于建议的程序使用标准的实验室直接剪切设备，并需要相对较短的时间来完成，它提供了一个简单方便的替代方案，用于确定静态压实土壤的抗剪强度B。关键词：抗剪强度，基质吸力，非饱和土，静力击实土。
The unsaturated shear strength parameter, ϕb, is usually determined using triaxial of direct shear apparatus that have been modified to allow for the control and (or) measurement of pore-air and pore-water pressures. A fairly high level of expertise is required for the characterization of ϕb using these modified apparatus. A simple procedure for determining ϕb for statically compacted soils at different water contents is presented along with a method of analysis. The tests can be performed on a conventional direct shear apparatus. The unsaturated shear strength parameter, ϕb, obtained using the proposed procedure is shown to be comparable to that obtained using the modified direct shear test. Since the proposed procedure utilizes standard laboratory direct shear equipment and takes a relatively short time to complete, it offers an easy and convenient alternative for the determination of ϕb for statically compacted soils. Key words: shear strength, matric suction, unsaturated soils, statically compacted so...