Three‐dimensional analysis of single pile response to lateral soil movements

Abstract

SUMMARYThree-dimensional finite element analysis was carried out to investigate the behaviour of single piles subjected to lateral soil movements and to determine the ultimate soil pressures acting along the pile shaft. The finite element analysis program ABAQUS was used for the analysis and run on a SUN Workstation. The von Mises constitutive model was employed to model the non-linear stress-strain soil behaviour. The pile was assumed to have linear elastic behaviour. This was considered to be a reasonable approximation, as the maximum stress developed in the pile did not exceed the yield stress of the concrete pile. The length of the pile is 15 m; the width of the square pile is 1 m: The three-dimensional finite element mesh used in the analysis was optimized taking into account the computing capacity limitations of the Sun Workstation. The computed ultimate soil pressures agreed well with those from the literature. The shapes of the soil pressure versus soil movement curves and the soil pressure versus the relative soil-pile displacement curves as well as the magnitude of the relative soil-pile displacement to mobilize the ultimate soil pressures were in reasonable agreement with those reported by other researchers.

Investigation of Pile- Soil Interaction Subjected to Lateral Loads in Layered Soils

“…Also, the diagrams of the displacement and the bending moment of the piles are shown in Fig. 3-6 [6][7][8] . The length of the pile is changed , respectively and the amount of the load is 300 kN.…”

Behavior of Model Group Piles Subjected to Lateral Soil Movement in Sand

“…These soil movements can generate lateral thrusts on the piles supporting both onshore and offshore structures, in a variety of circumstances. In all these conditions, the externally imposed soil movements will impart extra forces, cause an increase in bending moments and lateral deflections in piles which may finally cause problems and even damage to the structure of piles [2] and [3].…”

Modelling the Response of Single Passive Piles Subjected to Lateral Soil Movement using PLAXIS

“…Passive pressures and relative soil-pile displacements play an essential role in the behaviour of piled foundations and may induces deflections and bending moments which can cause serviceability problems and even damage to the passive piles [2] and [3]. One of the most famous damage caused by horizontal soil movement is the collapse of 13-storey building in China in 2009 under nearby surcharge loading and excavation works [4] as shown in Fig.…”