探析液压夯技术在建筑地基处理中应用

Application of the Hydraulic Compaction Method in Ground Improvements for Building Foundations

液压夯技术以其灵活的机动性,高频的击打、柔和的作用等优势在路基工程中得以广泛使用和推广,但在浅层地基处理中应用仍较少。以某房建项目为研究对象,阐述了液压夯的作用机理和施工工艺,通过与现行强夯技术的对比,分析它们的优劣,对局部范围或场地条件限制的软弱地基换填进行试验并对夯实后的数据进行了研究分析。结果表明:相对于有场地条件限制要求的其它换填夯实作业法,液压夯技术场地适应性更强,质量也较为可靠,换填夯实后的建筑地基能满足承载力和均匀性要求,且经济效果显著。

The hydraulic compaction method has been widely promoted and used in roadway engineering due to its mobility,high-frequency impact,and minimal side effects,but it is less applied in the ground improvement for the shallow foundation of buildings.A case history of a real estate construction projects is presented in this paper with the mechanism and the construction process of the hydraulic compaction method.By comparing this method with the current dynamic compaction method,the advantages and disadvantages are analyzed.Experiments are conducted on the soft soil replacement based on the site conditions,and the data after compaction is studied and analyzed.The results show that the hydraulic compaction method has a strong adaptability to the site and is more reliable comparing with the quality of replacement and the compaction.Its satisfactory compaction effect can effectively solve the problem for the building foundations meeting the requirements of bearing capacity and deformations after the soil replacement and compaction.The economic effect is significant.