振冲碎石桩法地基处理在阴坪水电站中的应用

 振冲碎石桩可通过对软弱地基进行置换及挤密形成复合地基，以提高地基变形模量和承载力，改善地基不均一性，减少不均匀沉降，并有效防止地基地震液化。作为一种较成熟的地基处理方法，该方法已得到广泛应用，但一般处理范围较小且处理深度不大。通过使用大功率机械设备并采取相应工程措施，在复杂工程地质条件下，可以应用振冲碎石桩对地基进行大面积、大深度处理，并有效解决地基砂土液化问题、承载力问题及抗剪强度问题。

APPLICATION OF FOUNDATION TREATMENT WITH VIBRO-REPLACEMENT STONE PILES TO YINPING HYDROPOWER STATION

The vibro-replacement stone pile can form composite foundation by replacing and squeezing the soft foundation. It can increase the soil deformation modulus and bearing capacity，improve the soil inhomogenity，reduce uneven settlement of foundation，and effectively prevent earthquake liquefaction of foundation. Although this method has been widely used，it is generally applied in small range and shallow depth. By using high-power equipment and taking corresponding engineering measures，foundation treatment can be carried out in large range and great depth with vibro-replacement stone effectively under complex condition of engineering geology. The problems of sand liquefaction，bearing capacity and shear strength of foundation can be solved effectively.