强夯块石墩复合地基的强度变形特性

 强夯块石墩是以高夯击能的重锤将块石送入软土中形成墩体， 以改善软土地基的工程性质。对于极软的粘土地基，单一的强夯块石墩加固，效果有限。如结合堆载预压，承载力提高，效果更显著，而且复合地基的变形性能亦可明显改善。

^Strength and Deformation Characteristics of Composite Foundation Formed by Heavily Rammed Stone-Piers

For improving the mechanical properties of soft foundation the composite foundation consisting of stone-piers and soft clay is adopted. The stones are rammed into the soft clay with a heavy hammer,forming a stone pier. When the stone piers are used as a only measure for very soft clay foundation, its effect is insignificant. However, if the stone piers and precompression by loading are employed together, the bearing capacity of the foundation will be greatly increased, moreover, its deformation characteristics will be improved obviously.