Dynamic compaction machine is widely used in construction projects and reclamation projects, followed by the renewal of equipment, which strengthens the role of leasing industry. Dynamic compaction machine replacement is a method of dynamic compaction used to reinforce saturated soft clay foundation. In the process of dynamic compaction replacement, the soil structure is damaged, and the foundation soil produces excess pore water pressure. However, with the increase of time, the structural strength of soil will be restored, and the granular material will be recycled Generally, piers have good water permeability, which is conducive to the dissipation of excess pore water pressure and consolidation.
In the process of constructing high fill embankment by layered dynamic compaction, multiple cables with lifting capacity of more than 15 tons or single cable crawler crane with lifting capacity of more than 20 degrees can be used to cooperate with and assist the mast. For joint cooperation, for example, multi rope crane should be used with automatic decoupling equipment, and the larger forward moving height of rammer should be 15 meters.
In the implementation of layered dynamic compaction construction, the height of a layer of dynamic compaction starts from the filling height of 8-12m, and the layer less than this height does not use dynamic compaction, and the upper embankment filling 8mi will carry out dynamic compaction until it reaches the top of the embankment.
The rammer of dynamic compaction machine shall be cylindrical steel rammer with high elastic modulus, or cylindrical rammer pouring reinforced concrete into thick steel shell. The weight of the rammer is 10 tons. At the bottom of the rammer, 4-6 ventilation holes connected with the top surface shall be symmetrically set, so that the air at the bottom of the rammer can be cleaned and the suction at the bottom of the pit can be reduced when lifting the hammer.