Through a lot of engineering practice, this paper further summarizes the successful experience of foundation treatment by deep dynamic compaction method in hole in building foundation treatment engineering. Induction has the following characteristics
1. In the foundation treatment engineering, the deep dynamic compaction technology in the hole can be applied to various complex foundation reinforcement treatment compared with other technologies. Such as large thickness of loess, miscellaneous fill, liquefied soil foundation and all kinds of soft soil, wet soil and with acid, alkali, salt corrosion foundation, can also be used for uneven foundation with hard interlayer, stone and waste backfill, garbage foundation and underground civil air defense works and other complex construction sites. By drilling. As long as the foundation of pile hole can be formed by powerful punching, this method can be used to reinforce the foundation whether there is underground water in the hole. In short, the collapsibility and liquefaction of foundation soil can be eliminated by using deep dynamic compaction technology in the hole. It has the characteristics of bearing pile and uniform stiffness, which conforms to the characteristics of foundation, not only has high bearing capacity, but also has small compression deformation.
2. One of the technical features of this technology is that it can use local materials. All inorganic solid materials such as soil, sand, stone, broken tile, concrete block, industrial waste and its mixture can be used, and the materials need not be strictly processed. All inorganic solid materials that can be filled into the hole can be used without long-distance transportation,
The construction site is a more complex place, and the construction of buildings is not as simple as people see, just standing on the shelf plastering cement can be, construction workers in the construction also need a lot of construction methods to cooperate in order to be very good to the construction. Dynamic compaction is a common foundation treatment method in construction. Only when the staff understand the construction precautions can the whole construction process be completed better.
1、 In the dynamic compaction of the foundation, the construction personnel should first carry out a trial compaction to determine the number of tamping, and in the process of determination, except that the average tamping settlement of the last two tamping can meet the requirements, there should not be too large uplift around the tamping pit.
2、 If the water content of the ground to be rammed is relatively large, then before the construction, ten to twenty centimeter thick gravel should be paved on the compacted ground.
3、 Dynamic compaction is also divided into seasons. Dynamic compaction is not suitable for construction in winter. Construction personnel should pay attention to this point and calculate the time before construction.
4、 In the construction site, safety is the most important, not to mention the dynamic compaction construction, the person in charge of the construction should strengthen the safety measures in the dynamic compaction construction, truly ensure the safety of each construction personnel, reduce the probability of accidents.
These matters needing attention in dynamic compaction treatment should be kept in mind, whether for construction or for yourself.