Abstract:In the analytical analysis of the lateral displacement caused by pile installation, an elasticplastic model of soils and the effects of the ground surface boundary were synchronously considered in this study. To be specific, the modified Cam Clay constitutive model was used to capture the soil behavior after yielding. The initial solution of ground displacement induced by installation of pile with infinite was derived based on the theory of cavity expansion. The effects of boundary surface and depth of pile buried in soils were considered by introducing a modified function into the initial solution. The analytical solution was validated using the field measure data first. Then it is exploited to undertaken parameter analysis. The results show that the soil displacement caused by pile installation increases nonlinearly with the increase of pile diameter and the decrease of preboredhole diameter. In addition, the displacement also increases with OCR, which can be attributed to the obvious squeezing effect of the heavily consolidated soils with compact structures.
