论文部分内容阅读
强夯法是利用起重机械吊起大吨位夯锤,提升到一定高度自由下落,给地基以强大冲击能量的夯击。从能量守恒的角度看,就是势能向动能的转化,一部分动能由于空气摩擦力及地基基坑周边接触面摩擦阻力做功,损耗掉了;一部分由于土层在加固压缩的瞬间,以冲击压缩波的形式传递出去;而大部分动能用于压缩土体,使土体在压缩致密过程中做功,迫使土体改变结构,缩小空隙,排出气体和水份,使土粒重新排列,迅速固结,从而提高地基强度,降低其压缩性。从强夯法加固原理可以看出:强夯过程实际上就是能量转
Dynamic compaction method is the use of lifting machinery hoist large tonnage rammer, to a certain height to enhance the freedom to drop to the foundation to a strong impact of the impact of energy. From the viewpoint of conservation of energy, it is the conversion of potential energy to kinetic energy, and some of the kinetic energy is lost due to the frictional force of air friction and the contact friction around the foundation pit. In part, due to the soil strengthening compressive moment, And most of the kinetic energy is used to compress the soil so as to make the soil work in the process of compressing and compacting, forcing the soil to change its structure, narrowing the space, discharging the gas and water, rearranging the soil particles and quickly consolidating the soil Improve foundation strength and reduce its compressibility. From the principle of strong compaction reinforcement can be seen: Dynamic compaction process is actually energy transfer