DETERMINATION OF SOIL STRENGTH BY WHEEL SINKAGE

摘要

It has been known from empirical equations that soil strength can be determined if wheel sinkage and slip of a vehicle can be measured on soil surface. A field data of wheel sinkage and slip was collected from three tractors of different sizes on a dry sandy soil. Using an empirical equation, rated cone index was evaluated with measured wheel sinkage and slip data. Values of the rated cone index demonstrated that the same soil strength can be obtained with measured wheel sinkage and slip regardless of the vehicle used for the sinkage and slip measurements. It also demonstrated that soil strength can be determined in real time by measuring wheel sinkage and slippage.