Based on the first-hand data of dynamic compaction test, the relationship model between single point tamping settlement and tamping times is established, and the variation law of single point tamping settlement with tamping times is revealed. Based on the structural dissipation theory of rock and soil deformation, the effect of compaction energy on improving backfill is analyzed from the angle of energy

强夯地基处理夯沉量及夯击能量耗散分析

Analysis of dynamic compaction settlement and energy dissipation in dynamic compaction foundation treatment

利用强夯试验的一手数据,建立单点夯沉量与夯击次数的关系模型,揭示了单击夯沉量随夯击次数的变化规律;基于岩土体变形的结构耗散理论,从能量的角度分析了夯击能对提高回填土层开放系统有序性和稳定性的贡献,探讨了夯击能对系统的有效进化作用随夯击数的变化规律。

Based on the first-hand data of dynamic compaction test, the relationship model between single point tamping settlement and tamping times is established, and the variation law of single point tamping settlement with tamping times is revealed. Based on the structural dissipation theory of rock and soil deformation, the contribution of compaction energy to improving the order and stability of open system of backfill soil layer is analyzed from the angle of energy, The law of the effective evolution effect of tamping energy on the system with the tamping number is discussed.

强夯地基处理夯沉量及夯击能量耗散分析研究结果表明:

The results of dynamic compaction foundation treatment are as follows

①单击夯沉量随着夯击次数的增加的变化规律可分为两个阶段;

① The results show that the variation law of single click tamping settlement with the increase of tamping times can be divided into two stages;

②初始回填松散土层厚度对单击夯沉量曲线收敛所需的夯击数有影响,但对其收敛值的影响基本可忽略;

② The results show that the thickness of the initial backfill loose soil layer has an effect on the number of compaction required for the convergence of the settlement curve, but the influence on the convergence value can be ignored;

③随着系统有序度和稳定性的提高,夯击能用于保持并提高系统自身有序度和稳定性的能量减少,向外发散传递的能量增加强夯机租赁施工,系统趋于某个与夯击能对应的相对稳定状态广西强夯机租赁。

③ With the improvement of the order and stability of the system, the energy that can be used to maintain and improve the order and stability of the system is reduced, and the energy transmitted outward increases the lease construction of dynamic compaction machine. The system tends to be a relatively stable state corresponding to the tamping energy.

用强夯法加固松软地基，一定要根据现场的地质条件和工程使用要求，正确选用强夯参数，以达到经济的目的。

In order to achieve the economic purpose, dynamic compaction parameters must be selected correctly according to the geological conditions and engineering requirements.