关键词: 水平受荷桩, 砂土, 双曲线模型, 极限抗力

Abstract: For analysis of laterally loaded piles in sand, the p-y curve method was widely used. There were many different p-y curve models with different curve forms and parameters. The pile and soil parameters in p-y curves were analyzed; reasonable standard parameters were selected to normalize p-y curves; the hyperbolic model was chosen to fit normalized curves. By summarizing the current researches on ground reaction modulus and the ultimate resistance of the soil, considering the pile diameter, construction and other factors, appropriate parameters of hyperbolic model were selected. Through the comparative analysis of examples, the validity and applicability of the hyperbolic model are proved. The form of hyperbolic model is simple and in line with the ideal soil stress - strain relationship, and the model could approximate fitted the existing measured p-y curves in sand. Therefore, hyperbolic model could be used in the nonlinear analysis of laterally loaded piles in sand in practice.

Key words: laterally loaded piles, sand, hyperbola model, limiting resistance