插板强夯加固吹填砂及下伏浅层软土地基试验研究

摘要

通过对北方某港口区域特有的吹填砂及下伏浅层软土进行强夯试验研究,对试验过程进行监测和施工后的效果检测.试验结果表明:先插打排水板,先期采用低能级夯击,逐步增加夯击能和夯击遍数的施工工艺,有效的改善了地基土的物理力学性能和抗变形能力,得出可以指导大面积施工的施工参数,也为类似工程的地基处理设计和施工提供参考.%A dynamic compaction experiment has been done for the special reclaimed sand and shallow soft soil foundation within the range of a north harbor, including the monitoring of test process and the detection of construction effect. The results lead to a construction technology of drain band combining with low level ramming at first, and gradually increasing the tamping energy and tamping times, which can effectively improve the physical & mechanical properties of foundation soil and the resistance to deformation. Furthermore, the obtained parameters used for large-size construction give a reference for similar design and construction of foundation treatment.