Question 1: What is the significance of dynamic compaction in foundation engineering? One method of land supply treatment is to use a hammer with a certain weight to fall from a certain height and hit the foundation soil to increase its bearing capacity. Generally, it is mostly used to treat large-area thick fill sites.

Question 2: Definition of Dynamic Compaction Dynamic Compaction refers to the method of tamping the soil layer from a certain height with a heavy hammer to quickly consolidate the foundation in order to improve the bearing capacity of soft foundation. Dynamic compaction method is to use lifting equipment to lift the heavy hammer of 10 ~ 40 tons to the height of 10 ~ 40 meters to make it fall freely, and use powerful tamping energy and shock wave to tamp the soil layer. Dynamic compaction method is mainly used for sandy soil, unsaturated cohesive soil and miscellaneous fill foundation. For unsaturated cohesive soil foundation, continuous compaction or intermittent compaction is generally adopted; According to the engineering requirements, the compaction times and effective compaction depth are determined by field tests. The existing experience shows that the effective compaction depth of 3 ~ 6 meters can be obtained at the compaction energy of 100 ~ 200 tons meters. This is developed on the basis of heavy hammer compaction method, and its reinforcement mechanism is different from it. This is a new foundation treatment method.

Question 3: What do you mean by piling on the basis of dynamic compaction? Dynamic compaction can improve the strength of foundation soil, reduce its compressibility, improve its ability to resist vibration and liquefaction, and eliminate the collapsibility of soil. It is suitable for treating gravel soil, sandy soil, silty soil, cohesive soil, miscellaneous fill and plain fill foundation, and is also commonly used for treating liquefiable sandy soil foundation and collapsible loess foundation.

Piling on dynamic compaction foundation means that dynamic compaction foundation soil can not meet the foundation structure requirements of superstructure, so piling is needed to further strengthen foundation strength. For example, in many reclamation projects, after backfilling, they are left to dry for a period of time and then rammed. When there are structures above the plane, most of them still need to use pile foundation to strengthen the stability of the foundation.

Question 4: What is dynamic compaction? What does "he" do? Dynamic compaction is a foundation treatment technology. Dynamic compaction is also called dynamic compaction or dynamic compaction. This method is to lift the rammer (generally 10 ~ 40t) to a certain height repeatedly, so that it can fall freely (generally 10 ~ 40m) and give the foundation impact and vibration energy, thus improving the bearing capacity of the foundation, reducing its compressibility and improving its performance. Dynamic compaction method has the advantages of obvious reinforcement effect, wide application of soil types, simple equipment, convenient construction, labor saving, short construction period, material saving, civilized construction and low cost. Since its introduction in 1970s, it has been rapidly popularized and applied in China. A large number of engineering examples have proved that the dynamic compaction method can generally achieve good results in dealing with gravel soil, sandy soil, low saturation silt and cohesive soil, collapsible loess, plain fill and miscellaneous fill. For soft soil foundation, generally speaking, the treatment effect is not significant.

Question 5: What parameters are related to the price of dynamic compaction? There are many factors that affect the price of dynamic compaction, such as tamping times and foundation engineering area. The larger the area, the higher the price. But you don't know whether you are talking about the total price or the unit price of dynamic compaction. Generally, the unit price of dynamic compaction is multiplied by the total area. Generally, there is no charge outside Nanjing. Hengtong Dynamic Compaction Company charges a one-time fee, other dynamic compaction dehydration, and some companies charge extra.

Question 6: 400t dynamic compaction of foundation? What does m mean? A 20-ton rammer can increase the energy generated by a 20-meter free fall, which is equivalent to 4000 kn * m.

Question 7: What does a dynamic compaction mean in a construction project? Dynamic compaction is a foundation treatment method, which is very effective in eliminating the collapsibility of soil. It is often used to treat collapsible soil, miscellaneous fill and other soils with high porosity. Dynamic compaction construction parameters should be based on design and local construction experience, and the one-time budget estimate of dynamic compaction is a subtitle adjusted on the basis of basic subtitle.