强夯法来源于法国,1969年首要用于法国某海滨20来栋八层居住修建的地基加固工程。现场的地质条件为:表层4-8米为采石场废石弃土填海造地,以下15-20米为夹有高紧缩性淤泥的沙质粉土,再下为泥灰岩。原拟选用桩根底,不只桩长要抵达30-35米,而且负摩擦力所发生的荷载将占整个桩根底承载力的60—70%,很不经济。后改用堆土(高5m,100kpa)预压加固,历时三个月,沉降仅20cm,毕竟选用强力夯实,只一遍(锤重80kN,落距10m)就沉降了50㎝ 。随即引起了人们的留神。我国从1978年在塘沽新港初度运用往后,展开很快。
The dynamic compaction method originated from France. In 1969, it was mainly used to reinforce the foundation of more than 20 eight-storey residential buildings on a French coast. The geological conditions of the site are as follows: the surface layer is 4-8 meters for reclamation of waste rock from quarry, the following 15-20 meters are sandy silt with high compacting silt, and then the bottom is marl. It is not only 30-35 meters long, but also 60-70% of the total bearing capacity of pile foundation caused by negative friction. After three months, the settlement was only 20 cm. After all, the settlement was 50_after only one time (weighing 80 kN, falling distance 10 m). Then it aroused people's attention. Since its initial application in Tanggu New Port in 1978, China has developed rapidly.