Impact compaction and dynamic compaction are widely used in deep foundation reinforcement and high fill subgrade construction. What is the difference between them? Let the rental manufacturer of dynamic compaction machine explain the relevant contents for you.
1、 Differences in construction methods
The compaction machinery used for impact rolling is impact roller. The impact compaction method is to use the non-circular impact roller of the impact roller to impact and compact the foundation to achieve the required compactness. At the same time, it can effectively reduce the settlement of the subgrade, improve the quality of the project, improve the strength of the subgrade, and then improve the quality of the project. It is suitable for large-area filling projects.
The tamping machine used for dynamic compaction is a dynamic tamping machine. The powerful compaction method is the dynamic compaction method, also known as the dynamic consolidation method. It is a method of strengthening the foundation by using the powerful compaction machinery to lift a 10-40 ton heavy hammer to a height of 10-40 meters so that it can fall freely. It relies on the powerful compaction energy and shock wave to tamp the soil layer to improve the foundation strength and reduce its compressibility.
2、 Difference of construction machinery
There are many tamping and compacting machines. Different types of tamping or compacting machines are required according to different construction processes of the project.
The compaction machinery used in the impact compaction method is the impact roller.
The tamping machines used in the strong tamping method are mainly high-speed hydraulic tamping machines and heavy hammer dynamic tamping machines.
3、 Differences in construction principles
The working principle of impact rolling is that the non-circular impact rolling wheel of the impact roller, driven by the traction machinery, converts the traveling kinetic energy and high potential energy into impact energy, and impacts the subgrade base to generate strong impact energy on the deep layer of the soil. The impact wave formed by the impact energy can be transmitted to a very deep depth, so it has great advantages in the compaction depth.
The working principle of dynamic compaction is that the tamping equipment uses the heavy hammer to tamp the foundation. Under the influence of huge instantaneous impact force, the tamping hammer can flush the upper soil mass and then damage the soil structure. Due to the short time of tamping action, the tamping action is often completed before the pressed material has time to "flow", so the instability caused by the "flow" of the foundation can be reduced.
We have discussed the difference between dynamic compaction machine and impact roller from three aspects. Of course, the choice of use depends on your actual situation. For more information, please visit our website http://www.sddhfjx.cn Right.