巫山加筋土的三轴试验研究

Triaxial experiment study on Wushan reinforced soil

用常规三轴仪 ,研究了巫山县集仙中路 1号加筋土挡墙加筋填土在不固结、不排水条件下的变形破坏机理和抗剪强度性质。试验结果表明 ,该加筋填土的抗剪强度性质虽较不加筋土有一定提高 ,但由于筋带表面网格细微 ,与土体之间的咬合摩擦力较弱 ,易在筋带与土体之间产生人为的滑动面 ,从而造成加筋土抵抗小 ,变形的能力减低 ;同时试验还表明 。

The deformation failure mechanism and shear strength characteristics of reinforced filling soil in Wushan county are studied with triaxial apparatus. It is shown that the shear strength of the reinforced soil is higher than that of the unreinforced soil, but the frction force between geotextile band and soil is quite weak because the surface of the geotextile band is relativly smooth. As a result, a sliding plane is formed between getotextile band and soil, and the ability to resist the slight deformation is weakened. Meanwhile, it is found that enclosure pressure and layers of geotextile band also can affect the shear strength of the reinforced soil.