合肥红土的强度与弹性模量

THE STRENGTH AND ELASTIC MODULUS OF LATERITE IN HEFEI

本文以合肥市红色页岩及砂岩的风化产物:红粘土及含泥砂土,进行单轴压缩试验,得出抗压强度及抗剪强度指标。同时得出这类土的应力应变曲线为软化型及塑流软化型,试样破坏的形态为剪切型及断裂型。观察到混有粘土的含泥砂土样的破坏及强度取决于含泥砂土的性质。采用又曲线模式描述红土软化型及塑流软化型的应力应变曲线,并据此推导出红土非线性弹性模量的表达式。

Based on the uniaxial compression fest of red clay and red sandy loam weathered from red shale and red sandstone respectively uniaxil compression strength and parameters of shear strength are taken. Sometime there are two shepes of stress-strais curve. softening and plastic softening. Two shapes of failure for sample-shear and plastic shear failure. The failure and strength of sandy loam are dependintion the characteristic of sand is it. Parabolic model may be used is describe the stress-strais curve and by means of if the, expression of nonlinear elastic modelus for laterite is get.