Abstract：The bridge pile foundation in high-steep rock slope has double function，i. e. bearing vertical and horizontal loads from superstructure and counteracting landslide-thrust from pile foundation side；and the mechanical behavior in the pile in high-steep rock slope is much more complex than that of antislide pile and simplex inclined-loading pile. Considering the landslide-thrust of the high-steep rock slope，the law that the landslide-thrust of the high-steep rock slope has parabolic type is found from in-situ test；and the parabolic distribution loads of the landslide is put forward. The finite difference method is introduced to calculate the displacement and inner-force of the bridge pile foundation in high rock slope under inclined loads. The result from the bridge pile foundation in K83+745 of Shaoyang—Huaihua Expressway in Hunan Province shows a good agreement with measured result. This indicates that the presented approach is feasible and applicable in engineering practice.
