对黄土地区某高速铁路长短桩复合地基的变形性状进行了计算分析。结果表明,提高短桩变形模量,减小其间距,或增加短桩桩长均可减小复合地基的变形,但效果并不明显;提高长桩变形模量,减小长桩间距则可明显减小复合地基沉降量。 The deformation characteristics of the long-short piles composite foundation of a high-speed railway in the loess area are calculated and analyzed. The results show that increasing the deformation modulus of the short piles, reducing the distance between them or increasing the length of the short piles can reduce the deformation of the composite foundation, but the effect is not obvious; increasing the deformation modulus of the long piles and decreasing the distance between the long piles Significantly reduce the settlement of composite foundation.