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为了解决强夯时产生的超孔隙水压力问题 ,提出了加固饱和粉土、粉质粘土地基的强夯碎石桩法。工程试验研究表明 ,该法克服了一般强夯法对这类场地效果不理想的缺点 ,加固后的复合地基不仅碎石桩本身桩体长、影响深、强度高 ,而且 ,桩间土的承载力得到很大的提高。复合地基比天然地基的承载力提高幅度在一倍以上。工程应用结果表明 ,该方法是可行的。
In order to solve the problem of excess pore water pressure during dynamic compaction, a strong compaction gravel pile method for strengthening saturated silt and silty clay foundation is proposed. Engineering tests show that the method overcomes the shortcomings of the general dynamic compaction method on the effect of such sites is not ideal, the reinforced composite foundation not only the pile itself pile length, the impact of deep, high strength, and, piles of soil bearing The power is greatly improved. The bearing capacity of composite foundation is more than double that of natural foundation. The engineering application shows that this method is feasible.