低能强夯法在台背填料加固中的应用研究

公路工程建设过程中，台背路段常出现填料不均匀、压实控制难、处治时间紧等问题，致使土体的实际压实质量难以保证。根据填方路基强夯测试结果，分析了强夯法的地基加固机理，提出了低能满夯法加固台背填料的关键指标，结合工程实际，论述了低能满夯法加固台背填料的具体设计方案和加固效果评价方法。现场测试情况表明，所采用设计指标较为合理。

Study on Application of Low-energy Dynamic Compaction in Abutment Backfill Reinforcement

In road engineering，such problems as uneven filling behind abutment，difficult compaction control，and tight schedule of treatment are always arose in abutment section，resulting in the quality of soil compaction difficult to be assured.According to the test result of dynamic compaction on filling subgrade，this paper analyzed the mechanism of foundation reinforced by dynamic compaction and put forward the key indicators of low-energy dynamic compaction for abutment backfill reinforcement，furthermore，associated with the engineering practice，the specific design scheme thereof and the method evaluating the reinforcement effect were discussed.The field tests show that the design specifications used are reasonable.