软土力学性质随含水量变化的试验研究

Experimental Research on Mechanic Characteristics Soft Soil Changing with the Water Content

通过试验研究了上海软土的孔隙水压力、应力 应变关系随含水量的变化规律 .试验表明 ,随着含水量的增加 ,土样破坏时的孔隙水压力逐渐增高 ;周围压力越高 ,土样破坏时主应力差越高 ,孔隙水压力越大 ;有效应力比随含水量的减少而增大 ,在周围压力较高时 ,规律更明显 ;

The experimental laws of the pore pressure, the relationship between stress and strain of soft soil changing in Shanghai with different water contents are studied. When the soil sample is destroyed, the pore pressure rises gradually with the increasing water content. The pore pressure rises with the increasing surrounding pressure and the decreasing water content, which is more evident when the surrounding pressure is high. The shear strengh of soil sample increases when the water content decreases.