强夯和强夯置换法是用起重设备将很重的夯锤(一般10~40t)起吊到必定高度(一般10~40m)，然后使其清闲下落，运用其发生的较大的冲击能对土进行强力夯实，以行进其强度、下降其紧缩性的一种地基加固处理办法。强夯法运用的设备简略，施工速度快，加固作用好，节约三材，经济效益明显。
Dynamic compaction and dynamic compaction replacement is a method of foundation consolidation, which lifts a heavy hammer (usually 10-40 t) to a certain height (usually 10-40 m) by lifting equipment, and then makes it fall idly. It can be used to compact the soil by using the large impact energy, so as to advance its strength and reduce its compactness. The dynamic compaction method has the advantages of simple equipment, fast construction speed, good reinforcement effect, saving three materials and obvious economic benefits.
工程实践证明，经强夯处理后的地基，其承载力可行进2~5倍，地基紧缩性可减小2~10倍，有用加固深度可达5~15m，可消除饱满砂土地基的液化。强夯法多年来广泛应用在修建、水利、交通、港口和石化等多种工程的地基加固上。
Engineering practice has proved that the bearing capacity of dynamic compaction treated foundation can be improved by 2-5 times, the compactness of foundation can be reduced by 2-10 times, the useful reinforcement depth can be up to 5-15m, and the liquefaction of saturated sand foundation can be eliminated. Dynamic compaction method has been widely used in foundation reinforcement of construction, water conservancy, transportation, port and petrochemical engineering for many years.
强夯法是一项动力固结技术，能否灵敏的使水从土体内排走，是抉择强夯作用好坏的要害。强夯施工首要适用于处理碎石土、砂土、低饱满度的粉土与粘性土、湿陷性黄土、素填土和杂填土等地基，关于高饱满度的粉土与粘性土应慎重选用。如单纯用强夯法处理高饱满度的粉土与粘性土，可在场所内安顿必定数量的碎石桩、砂桩或塑料排水板，构成排水通道，也能起到一定的加固处理作用。
Dynamic consolidation is a dynamic consolidation technology. Whether water can be discharged from soil sensitively or not is the key to the selection of dynamic consolidation. Dynamic compaction construction is mainly applicable to the treatment of gravel soil, sandy soil, silt and cohesive soil with low saturation, collapsible loess, plain fill and miscellaneous fill, etc. Silt and cohesive soil with high saturation should be carefully selected. If only dynamic compaction is used to treat silt and cohesive soil with high plumpness, a certain number of gravel piles, sand piles or plastic drainage boards can be installed in the site to form drainage channels, which can also play a role of reinforcement.
强夯置换法是选用在夯坑内回填块石、碎石等粗颗粒资料，用夯锤夯击构成接连的强夯置换墩。强夯置换法一般适用于高饱满度的粉土与软塑~流塑的粘性土等地基上对变形操控要求不严的工程。
The dynamic compaction replacement method is to select coarse grained materials such as backfilling stones and crushed stones in the compaction pit to form successive dynamic compaction replacement piers by ramming hammer. Dynamic compaction replacement method is generally applicable to projects with low requirements for deformation control on silt with high saturation and clay with soft-plastic to fluid-plastic properties.
强夯工程选用的夯击能一般为1000~8000kN.m，也有少数地基选用更高的夯击能，所处理的场所大多数为劈山填海及山地沟谷回填的地基，如回填土首要为碎石素填土，则非常适宜强夯处理。
The tamping energy used in dynamic compaction projects is generally 1000~8000kN.m, and a few of the foundations have higher tamping energy. Most of the sites treated are the ground filled by hill-splitting reclamation and mountain valley backfill. If the backfill is mainly gravel filling, it is very suitable for dynamic compaction.