A simplified analytical method for response of an axially loaded pile group subjected to lateral soil movement

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A simplified analytical method for response of an axially loaded pile group subjected to lateral soil movement

Liang, Fayun / Yu, Feng / Han, Jie

Abstract Based on the flexural differential equations of elastic piles and Winkler’s spring model of pile-soil interaction, the equations of axially loaded piles subjected to lateral soil movement were solved in this study. In the derivation, the flexural differential equations were established using a two-stage method and solved by the finite difference method. A method based on Mindlin’s solution was developed to analyze the shielding effect between piles, and this method was further applied to an axially loaded pile group with free heads or a pinned pile cap. A parametric study was conducted to investigate the influence of pile spacing, number, and location and magnitude of axial load. The results show that the axial load applied on piles or the pile cap affected the shielding effect and the response of the pile group subjected to lateral soil movement. The shielding effect depended on the pile spacing and number and the magnitude of axial loading.