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结合具体的工程实例,对强夯法在特殊土质和特殊环境条件下的应用进行研究。提出了在厚度差别大且碎石含量多、周围房屋距离近的杂填土地基上强夯施工以及在粉煤灰回填土地基上设置排水沟后进行低能量强夯的施工工艺。建议了相应的工艺参数,包括砂石混合土回填分层分区、排水沟设置、夯点布置、夯击能量等,并给出了处理后地基的承载力等设计指标参考值。
Combined with specific engineering examples, the application of dynamic compaction method in special soil and special environmental conditions is studied. The paper puts forward the construction technology of dynamic compaction on miscellaneous fill foundation with large difference in thickness and large amount of gravel and surrounding houses and the construction of drainage ditches on fly ash backfill foundation after low energy dynamic compaction. The corresponding process parameters are suggested, including sandstone and gravel mixed soil backfilling stratified zone, drainage ditch setting, ramming point arrangement, ramming energy etc, and the reference value of design indexes such as the bearing capacity of the treated foundation is given.