Abstract
This study investigates time-dependent lateral response of piles in elastoplastic soils under combined axial and lateral loadings. Mohr Coulomb model representing the soil and the finite element formulation were described and verified. The transient analysis of pile problem was then carried out and the results of the analysis were presented which demonstrate the effects of the consolidation process on the lateral response of the pile under combined loadings. Lower vertical to horizontal load ratio gives lower differences in deformations with time and becomes more significant with increasing load ratio. Also lateral soil pressure and shear stress in soil increased with time and depth but in a rate lowered as the load ratio decreased.
Highlights
The stability of foundations and earthworks such as piles in saturated soils is a time-dependent process
The formula was described for elastoplastic analysis of consolidation of an axisymmetric soil body subjected to three-dimensional loading and used for consolidation analysis of piles under pure lateral loading
A horizontal load, H, The time dependent behavior of a vertical pile varied from H = 5 γw x D3p to H = 15 γw × D3p are embedded in a saturated elasto plastic soil and applied to the pile head during a total time of subjected to a lateral load applied at the midline, is T = 0.0001
Summary
The stability of foundations and earthworks such as piles in saturated soils is a time-dependent process. This is because any change in total normal stress is initially resisted by pore pressures, which dissipates over a period of time. The performance of pile foundations subject to axial and lateral load is of considerable importance in geotechnical practice. It is generally accepted that the finite element method is the major technique used in numerical analysis of geotechnical problems piles and soil consolidation. The formula was described for elastoplastic analysis of consolidation of an axisymmetric soil body subjected to three-dimensional loading and used for consolidation analysis of piles under pure lateral loading
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