某物流仓储区强夯加固填土地基的试验与应用

Test and Application of Heavy Tamping and Reinforing Fill Foundation in a Logistics Storage Area

某拟建物流仓储区为了土方挖填平衡,大量的削高填低,形成了较大面积的填土区。为了节省工程造价,采用强夯加固填土地基。在正式大面积施工之前进行了大量的试验工作:对比填土层强夯前后的工程性质(标准贯入击数、现场载荷实验、土样的室内实验等)、观测孔隙水压力变化情况。通过试验,确定了正式施工时适合的夯击遍数、夯击能、两遍夯击的时间间隔等参数。

A proposed logistics storage area for earthwork excavation and filling balance,cutting high and filling low largely,formed a large area of fill area.In order to save the project cost,heavy tamping is used to reinforce the fill foundation.A large number of experiments were carried out before the formal large area construction:comparing the engineering properties before and after heavy tamping of fill layer(standard penetration number,field load experiment,indoor experiment of soil sample,etc.),observing the change of pore water pressure.The parameters such as the number of tamping times,the energy of tamping and the time interval of two tamping are determined by experiment。