高能级强夯置换处理软土地基孔隙水压力研究.pdf

施工技术 2017年4月下 12 CONSTRUCTION TECHNOLOGY 第46卷第8期 D0:10.7672/8gjs2017080012 高能级强夯置换处理软土地基孔隙水压力研究 马健，姜爽，刘丽 (北京泰斯特工程检测有限公司，北京102600) [摘要]以港口饱和软土地基处理为例，采用高能级强夯置换法进行地基处理.以确定施工参数和评价地基处理 效果为目开展强夯置换试验研究.通过对单点夯试验过程中孔隙水压力监测结果的分析确定施工参数，并分析强 夯置换墩体成型状态进而评价地基处理效果；通过对群夯试验过程中超孔隙水压力的消散情况分析确定每遍强夯 的间歇周期.试验结果显示：强夯置换墩体的形成与孔隙水压力的变化有特定的相关性，强夯置换墩体的成型深 度决定了强夯置换影响深度，强夯置换墩体的形成利于场区地基土强夯过程中超孔隙水压力的消散. [关键词]地基；高能级强夯置换；孔隙水压力；墩体；研究 [中图分类号]TU472.1 [文献标识码]A [文章编号]1002-8498(2017)08-0012-04 Research on Pore Water Pressure for Treatment of Soft Soil Foundation by High Energy Dynamic Compaction Replacement Method MA Jian JIANG Shuang LIU Li Beijing Taisite Engineering Testing Co.Ltd.Beijing 102600 China) Abstract:Taking saturation soft soil ground treatment in port as an example the high energy level dynamic paction replacement method is used for the foundation treatment.The study of the dynamic paction replacement test is worked out to determine the working parameters and evaluate foundation treatment effect.Based on the analysis of the monitoring of the pore water pressure during the single-point dynamic paction test the working parameters is defined.The analysis of dynamic paction replacement piers can evaluate foundation treatment effect.Based on the analysis of the pore water pressure monitoring results for the all process of dynamic paction the dynamic paction of intermittent cycle is determined.The test results show that the formation of the dynamic paction replacement piers and the cha...