粉土强夯法地基处理参数的试验研究

Test study on foundation treatment parameters of silt soil by dynamic consolidation

某原料场工程采用强夯法对饱和粉土进行地基处理。针对该工程设计和施工中遇到的强夯参数和地基处理效果等问题进行试验研究,对该工程区域运用不同的强夯参数,通过加固过程中的夯坑沉降量、地面隆起量和孔隙水压力监测,以及加固后土层的静力触探、地基承载力等现场试验,对不同强夯参数下的加固效果进行比对,得出适用于该工程粉土地基的强夯参数。

Saturated silt soil foundation treatment with dynamic consolidation is used in Baogang Steel Co., Ltd. in Nantong city of Jiangsu province. This paper mainly studies the dynamic consolidation parameters and foundation treatment effect in the design and construction process with a series of tests. Different dynamic consolidation parameters are adopted in different project areas, including monitored tamping pit settlement, ground uplift amount, as well as the pore water pressure in the consolidation process. Based on the static cone penetration test and static load test after consolidation process, this paper compares the reinforcement effects under different dynamic consolidation parameters, and at last gets the silt soil foundation dynamic consolidation parameters adapting to this project.