段士伟
    （冶金工业部建筑研究总院 北京 100088）

[提要]  通过一系列典型试验和理论分析，阐明在强夯工法加固地基时，试图以加大夯击能量无限制地提高影响深度是行不通的。在设计强夯加固地基工艺时，应考虑到“极限影响范围”的存在，而该影响范围仅与夯锤底面的尺寸有关。最后介绍了用强夯法加固回填地基的实例。
[关键词]  地基处理 强夯 影响深度 极限影响范围

Through a series of typical tests and theoretical analyses, it is confirmed that it is unfeasible to ceaslessly increase the depth of influence when a soil foundation is reinforced with larger ramrning energy. The existence of  "the ultimate scope of influence" should be taken into account when designing the process of reinforcing a ground by the dynamic consolidation. lt also points out that  "the ultimate scope of influence " is related only to the dimension of the bottom face of a pounder. Finally, an example of reinforcing a back-filling ground by the dynamic consolidation is introduced.
Keywords:  soil treatment; dynamic consolidation;influencing depth; ultimate scope