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通过碎石土回填地基采用强夯法加固的工程实例,叙述了国内首次应用10000kN·m高能级强夯加固的效果,分析了碎石土地基上强夯前后压缩试验、剪切试验的结果,得到了粉土层、粉质粘土层的压缩系数、压缩模量、内摩擦角和粘聚力在10000kN·m强夯前后的变化特征,为10000kN·m高能级强夯的的设计、监测和检测提供了依据,并为规范的修订提供参数。
Through the engineering example of strengthening the backfill foundation by dynamic compaction method, the effect of the first 10kN · m high strength dynamic compaction reinforcement in China was described. The results of the compression test and the shear test before and after dynamic compaction on the gravel soil were analyzed. The variation characteristics of compression coefficient, compressive modulus, internal friction angle and cohesion before and after 10000kN · m dynamic compaction in silt layer and silty clay layer were obtained, which were designed and monitored for the high energy level rammer of 10000kN · m The test provides the basis for the specification of the revised parameters.