dynamic compaction的意思|示意

Dynamic compaction, also known as controlled sinking, is a ground improvement technique used to densify soil or fill materials. It is achieved by repeatedly dropping a heavy weight onto the soil or fill surface in a predetermined pattern until the desired degree of compaction is achieved.

Dynamic compaction is most often used in subsurface construction and highway construction. It is ideal for sites where the soil is too wet or too soft to compact with heavy machinery alone. It can also be used in conjunction with other forms of soil compaction, such as vibratory compaction and roller compaction.

The primary application of dynamic compaction is to reduce the settlement of structures on weak soils or fill, or to improve the stiffness or bearing capacity of a site. It is typically used in cases where either the weight of the structure or the permissible settlement is too high for the soil to complete naturally.

The procedure for dynamic compaction involves the following steps: select a suitable surface for compaction; drill the surface for insertion of the weight; install a weight and vibratory hammer; drop the weight from a predetermined height; measure the soil's reaction to the compaction; add additional material if needed; and repeat the steps until the desired degree of compaction is achieved.

Dynamic compaction is a cost-effective and efficient method for ground improvement. It is used on a variety of sites, including highway slopes, embankments, riverbanks, and landfill sites. It is typically much faster than other methods of ground compaction, saving both time and money.