粉体搅拌桩是采用搅拌机械,直接将粉体材料与天然地基土就地强制搅拌,从而形成固体混合物的一种软土地基加固措施。文章以苏州中环快速路建设为例,采取粉体搅拌桩固化河塘软基土质层,提高地基的整体承载力。按照路基主线段粉体搅拌桩工艺进行施工,使软弱的土硬结成具有整体性、水稳定性和相当强度的加固体,提高其强度,从而起到加固地基的作用。 Powder mixing pile is the use of mixing machinery, powder materials and natural ground directly to force the local agitation, forming a solid mixture of soft ground reinforcement measures. Taking the Central Expressway construction in Suzhou as an example, the article takes the powder mixing pile to solidify the soft soil layer of river ponds to improve the overall bearing capacity of foundation. In accordance with the main line of subgrade powder mixing pile construction process, the weak soil hard to form a holistic, water stability and considerable strength of the reinforcement, to enhance its strength, and thus play the role of strengthening the foundation.