Washington State University. National Center for Transportation Infrastructure Durability & Life Extension (TriDurLE) UTC
Abstract
69A3551947137This report and the accompanying computer code (Software, Drag_Pile) describe the mobilized response analysis of piles under axial loads with the consideration of downdrag forces caused by the settlement of inundated collapsible soil layer(s). Pile foundations in collapsible soils may experience a sudden increase in the axial load (i.e., negative skin friction) due to the inundation of the surrounding soils, which may lead to significant reduction in the pile capacity and excessive pile settlement. A soil-pile model is developed to determine the downdrag force (negative skin friction) acting on the pile and pile settlement due to the inundation of the collapsible soil layer(s) in the vicinity of the pile foundations
