一、概述压紧挤密桩施工法是在松软地基中用振动或冲击行重来压入加固材料，常用的有砂、碎石、石灰及水泥等，通过造成大直径的压缩桩往来使地基稳定。对于砂质土地基，是为了夯实地基，孔隙比减小，密度增大，使砂土地基挤实到临界孔隙比以下，由于形成强度高的挤密桩，提高 I. Overview Compression compaction pile construction method is to use vibration or impact weight in soft soil foundation to press in the reinforcement material, commonly used sand, gravel, lime and cement, etc., through the large diameter of the compression pile to make the foundation stable. For sandy soil foundations, it is to compact the foundation, the void ratio is reduced, and the density is increased, so that the sand foundation is crushed below the critical porosity ratio, and the compaction piles with high strength are formed.