Dynamic compaction machine is widely used in various foundation treatment projects. During this period, dynamic compaction technology scheme is appropriate for soft soil foundation construction of highway engineering. In order to tamp the foundation, the construction sequence of dynamic tamping is to reinforce the deep soil, then the middle soil, and the surface soil. After all tamping, the tamping pit will be leveled.

对于强夯机的夯锤应为具有较高弹性模量的圆柱形钢夯，或为将钢筋混凝土浇注在厚钢外壳中的圆柱形夯，强夯机夯锤的重量为10吨。

The rammer of dynamic compaction machine shall be cylindrical steel rammer with high elastic modulus, or cylindrical rammer with reinforced concrete poured in thick steel shell, and the weight of dynamic compaction machine rammer shall be 10 tons.

在夯锤的底部，应对称设置与顶部表面相连的4-6个通风孔，以便夯锤可以在提起锤子时清洁底部的空气并减少坑底部的吸力。那在强夯机进行施工的过程中，强夯机施工的速度会受到哪些方面的影响呢？那我们又该如何进行改 善呢？

At the bottom of the rammer, 4-6 ventilation holes connected with the top surface shall be symmetrically arranged, so that the air at the bottom of the rammer can be cleaned when lifting the hammer and the suction at the bottom of the pit can be reduced. In the process of dynamic compaction machine construction, which aspects will affect the construction speed of dynamic compaction machine? How can we improve it?

强夯机在建设工程中，填海工程中广泛应用，强夯置换后的地基竣工验收时，承载力检验除应采用单墩载菏试验检验外，应采用动力触探等有用手段查明置换墩着底情况及承载力与密度随深度的变化，对饱和粉土地基允许采用单墩复合地基载荷试验代替单墩载荷试验。

Dynamic compaction machine is widely used in construction projects and reclamation projects. In addition to the single pier loading test, dynamic penetration test and other useful means should be used to check the change of bearing capacity and density with the depth of the replacement pier, For saturated silt foundation, it is allowed to use single pier composite foundation load test instead of single pier load test.

强夯机的施工速度与强夯击能有关，强夯机夯击的强度不够会导致土地基地无法夯实，地基空隙没有彻 底消失，夯击的强度一般取决于夯锤的夯击高度于夯锤本身的体重有关。

The construction speed of the dynamic rammer is related to the dynamic ramming energy. The insufficient ramming strength of the dynamic rammer will lead to the failure of tamping the land base, and the foundation gap does not disappear completely. The ramming strength generally depends on the ramming height of the rammer and the weight of the rammer itself.