非饱和砂土强度特性的室内试验研究

Test Study on Deformation and Strength Character of Unsaturated Sand

以广东珠三角地区某场地砂土为研究对象,通过同时控制吸力、净室压力的非饱和土三轴剪切试验和同时控制吸力和净竖向压力的非饱和直剪试验,分析探讨了非饱和砂土的应力—应变性状及强度规律,得到了各自的变形和强度参数,并将这些参数进行了比较和分析,得出随吸力和净围压的变化,其强度、变形和各强度参数之间的变化规律。

With the sand in Guangzhou Pearl River Delta region,parameters of deformation and strength are obtained through unsaturated triaxial test and unsaturated shear test by controlling suction and pressure.It is concluded that strength,deformation and parameteras of strength vary with suction and pressure.