高速公路液化土与软土交互地基强夯法处理研究

Research on dynamic compaction treatment of foundation for expressway with interbedded liquefiable soil and soft soil

针对某高速公路中液化土与软土交互层特殊地基进行强夯法试验研究 ,提出了拟静力法确定强夯加固深度的公式 ,与Menard公式对比分析表明本文提出的强夯有效加固深度的公式具有鲜明的土力学基础 ,理论计算结果与实际检测的结果相吻合。

The dynamic compaction treatment method of foundation with interbedded liquefiable soil and soft soil is studied for expressway in this paper. The formula of treatment depth for dynamic compaction is presented according to the pseudostatic mechanics method. It is of obvious meaning of soil mechanics compared with Mendard's formula. The results calculated by the formula of treatment depth for dynamic compaction are in agreement with the measured results. Simultaneously, the treatment method of low energy dynamic compaction is put forward based on the measured results for the foundation interbedded with liquefiable soil and soft soil. These methods are of practical value for foundation treatment of the expressway.