论文部分内容阅读
在土方工程施工中,如果天然地面标高低于设计标高,往往要进行填土。控制填土压实质量的指标是土的干容重γ_d,即单位体积土中固体颗粒的重量。γ_d的数值越大.说明填土越密实。土的密实度与许多因素有关,除了夯实机械作功的能量外,还有不可忽视的土中的含水量w,即单位体积土中水的重量和颗粒重量的比值。土是由固体颗粒,水和空气所组成的三相体系。土中的水按分子
In the construction of earthworks, if the natural ground elevation is lower than the design elevation, filling is often required. The indicator for controlling the compaction quality of the filling is the dry bulk density γ_d of the soil, ie, the weight of the solid particles in the unit volume of soil. The larger the value of γ_d, the more dense the fill. The compactness of soil is related to many factors. In addition to compacting the energy of the mechanical work, there is also the water content w in the soil that cannot be ignored, that is, the ratio of the weight of water in a unit volume of soil to the weight of the particles. Soil is a three-phase system consisting of solid particles, water and air. Water in the soil by molecules