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地震作用产生的地基液化是导致建筑物破坏的一个重要原因。我国沿海地区由于河流的堆积作用存在大量的砂土和粉土地基,存在液化可能,所以地基液化的处理是很多工程中必须要面临的问题。共振法是一种新型液化地基处理方法。本文依托江苏省无锡至南通过江通道公路北接线工程,通过静力触探试验和标准贯入试验研究共振法处理液化地基的效果。试验结果得出,共振法处理后地基土的锥尖阻力和侧壁摩阻力均得到了很大提高,且随着深度的增加,提高量也在增加。共振法处理后地基土的标准贯入锤击数得到了很大提高,且地基土不再液化。
Ground liquefaction caused by earthquake action is one of the important causes of building damage. In coastal areas of our country, because of the accumulation of rivers there is a large amount of sandy soil and silt foundation, which may exist in liquefaction. Therefore, liquefaction of foundation is a problem that many projects must face. Resonance method is a new liquefaction foundation treatment method. In this paper, relying on the Jiangsu-Wuxi-Nantong River Road northbound junction project, through the static cone penetration test and standard penetration test resonance method to deal with the effect of liquefied ground. The experimental results show that the cone tip resistance and frictional resistance of the foundation soil have been greatly improved after the resonance treatment, and the amount of increase also increases with the increase of the depth. After the resonance method, the standard penetration hammer of foundation soil is greatly improved, and the foundation soil is no longer liquefied.