中文摘要：

把强夯单击瞬时变形简化为侧限变形，运用Boyle定律分析孔隙气体的体积变化，根据有效加固深度、影响深度与夯沉量的关系确定孔隙气压力随深度的衰减系数，建立夯况量计算模型，并用工程实例验证了该模型的可靠性。采用提出的单击夯沉量计算模型，分析了夯前土体饱和度、孔隙比、夯击能对强夯加固位移模式和夯击效率的影响。采用最大孔隙比变化量和附加孔隙气压力随深度的衰减系数β描述强夯加固位移模式，结果表明：系数β与孔隙比无关，只与饱和度和夯击能有关；随着夯击能的增大，夯击效率降低。设夯击效率与夯击能曲线的最大曲率所对应的夯击能为最优夯击能，求出最优夯击能与饱和度、孔隙比的关系，结果表明：随着饱和度的增大最优夯击能减小，随着孔隙比的增大最优夯击能增大。

英文摘要：

The transient deformation of single tamp was assumed as confined deformation. The volume change of void atmosphere was analyzed by Boyle law. On the basis of the relationship between effective reinforced depth and influential depth and tamping settlement, attenuation coefficient of void atmosphere with depth was calculated. Computation model of tamping settlement was studied. The reliability of the model was verified by an engineering project. The effect of saturation degree and void ratio of soil mass before tamping and impact energy on the displacement model of single tamp and efficiency of compact energy was studied. The displacement model of dynamic consolidation could be described by maximum of variation of porosity ratio and attenuation coefficient （fl） of additional pore air pressure with depth. The results indicate that β is not related to void ratio and related to saturation and compact energy. The impact efficiency decreases when tamping energy increases. The optimal compact energy is assumed as maximal curvature Kmax of impact efficiency-compact energy diagram. The relationship between optimal compaction energy and saturation and void ratio is analyzed. The optimal compact energy decreases when the saturation degree is increased and the porosity ratio decreased.