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夯击能量和地基土体特性是影响强夯地面振动衰减的两个重要因素。观测和分析表明 ,夯击能量越大 ,地面振动衰减越快。在较小的夯检距上 ,强夯地面振动的强度对夯击能量的变化相对较敏感 ,表现为在近距离上地面振动强度随夯击能量增加的速率较大。地面振动随距离的负指数幂衰减公式中当量系数 k值的大小与强夯夯击能和场地介质条件有关 ;而衰减指数 β值的大小主要与场地介质条件有关。这些规律对于强夯振动效应的评价和岩土体动力学特性的研究具有重要意义
Ramming energy and soil properties of the foundation are two important factors that affect the attenuation of ground vibration of rammed rammer. Observations and analyzes show that the greater the impact energy, the faster the ground vibration attenuation. In the smaller ram survey, the intensity of ground compaction is more sensitive to the change of the compaction energy, which shows that the ground vibration intensity increases with the compaction energy at a short distance. The magnitude of k in the negative exponential decay formula of ground vibration with distance is related to the dynamic compaction energy of rammed earth and the medium conditions in the site. The value of attenuation index β is mainly related to the medium conditions in the site. These rules are of great significance for the evaluation of vibration effect of dynamic compaction and the study of dynamic characteristics of rock and soil