Deep dynamic compaction in hole is a proprietary patent technology of Beijing Ruilitong Foundation Engineering Co., Ltd., which has been applied in hundreds of projects and all meet the design requirements. DDC piles were rated as "the first in technology level at home and abroad" by Beijing Construction Committee, and the Ministry of Construction has compiled the technical regulations for DDC piles, and the technology of DDC piles has reached the international advanced level. DDC pile technology was listed as the national key promotion technology by the Ministry of Construction in 200 1, 2005, 2008 and 201. In 2003 10, DDC pile technology won the highest international award-Gold Award at the 52nd World Invention Expo held in Belgium, which is the only gold award of China's foundation treatment technology in the world so far.
SDDC is a patented technology of sharp penetration of foundation, a foundation reinforcement technology developed on the basis of dynamic compaction technology, and a foundation treatment technology that integrates the mechanism of dynamic compaction with modern science and technology. The bearing capacity of the treated foundation is extremely high, which can be increased by 2-9 times, and the compression deformation is extremely small.