Study on Disturbance Mechanism of Squeezed and Non-Squeezed Soil Piles on Soft Soil Foundation

The construction process of pile foundations can significantly disrupt the soil. Therefore, it is necessary to limit degree soil disturbance caused by foundation an acceptable level. This paper examines effects driving on soft foundations, specifically analyzing squeezing effect squeezed piles and unloading non-squeezed piles. To investigate these effects, two typical piles, a hydrostatic pile, bag grouting as well (a bored pile) are selected. Specifically, novel method for numerical models, which simulates mechanical processes different types under standard grids, proposed. Three crucial indicators—soil displacement field, stress influence range—are chosen compare three Results indicate that cause significant especially in horizontal direction, while causing relatively slight field. Among them, magnitude range greater than those pile. For field changes minimally remains basically unchanged during quantify soil, direction each normalized its radius. values maximum all approximately 1/5 length above tip, with 7.6, 5.5, 3.5, respectively. deformation occurs near ground surface has 15.2, 7.5, 1.1 greatest effect, followed However, within allowable practical engineering, optimal piling be selected comprehensively considering factors such difficulty economic costs.