18000kN·m高能级强夯处理深厚填土地基效果检验分析

Effect Test and Analysis of Processing Deep Fill Ground by 18000 kN·m High Energy Level Dynamic Compaction

通过在某沿海碎石回填土地基上国内首次实施18 000 kN.m高能级强夯法加固地基,并分别应用平板载荷试验、超重型动力触探试验、标准贯入试验以及瑞利波试验方法对高能级强夯处理地基进行效果检验及分析,得到了碎石回填土地基上18 000 kN.m高能级强夯的有效加固深度等检测效果,有效加固深度为15.5 m,地基承载力为290 kPa,若用Menard公式计算,其修正系数为0.37,为18 000 kN.m高能级强夯法的参数设计、施工工艺和工程检测提供依据.

Through the successful implementation of the first 18 000 kN·m high energy level dynamic compaction in certain coastal gravel backfilling ground,this paper did an analysis of the effect of the post-test for the 18 000 kN·m of high-level dynamic design by using the plate loading test,ultra heavy dynamic sounding,standard penetration and Rayleigh wave.Some conclusions such as effective depth of improvement on rubble fills site with 18 000 kN·m HELDC are acquired.The characteristic value of foundation bearing capacity of the ground is 290 kPa,and the effective reinforcement depth 15.5 m.We conclude that the coefficient of Menard formula is 0.37,providing the basis for the high-level dynamic foundation parameter design,construction technology and project testing.