结合沉管砂桩与强夯法联合加固吹填土地基的现场试验,研究强夯过程中夯坑沉降量的变化过程、地层孔隙水压力的增长和消散规律及其空间分布特征。结果表明,随强夯遍数的增加,夯坑沉降量呈现明显的减小的趋势;强夯荷载作用下,地层中孔隙水压力的上升是十分明显的,且随离开强夯点水平距离的增大,最大孔隙水压力出现的深度有所下移。利用上述方法加固后,吹填软土地基的承载力特征值可达到143 kPa。 Based on the field test of strengthening the foundation of dredger fill with the combination of pipe-sinking sand piles and dynamic consolidation method, the changing process of rammer settlement during dynamic compaction, the growth and dissipation of pore water pressure and its spatial distribution are studied. The results show that with the increase of the number of dynamic compaction, the settlement of tampede decreases obviously. Under the action of dynamic compaction, the increase of pore water pressure in the stratum is very obvious. With the departure from the horizontal distance of strong tamping point Increase, the maximum pore water pressure appears depth down. After the above method is used to reinforce, the bearing capacity of infilled soft ground can reach 143 kPa.