Numerical Investigation on the Behaviour of Laterally Loaded Pile Embedded in Layered Soils of Addis Ababa
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Date
2019-10
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Abstract
A three-dimensional finite element technique was used to analyze behaviour of laterally loaded
single pile subjected to pure static lateral load. The main objective of this study is to assess the
influence of the pile diameter, pile length and site condition on the behaviour of laterally loaded
single pile embedded in layered soils. Most of the studies were focused on the behaviour of
laterally loaded pile embedded in homogenous soils, but in this study behaviour of laterally loaded
pile embedded in layered soils was considered.
A lateral load behavior of single piles in three different sites located in Addis Ababa city were
studied with different diameter and length of pile. The analysis was carried out by considering free
headed flexible piles. Full scale field test result obtained from the literature was used for the
validation of Plaxis 3D Foundation FEM. Lateral deflection, bending moment and shear force were
calculated for piles with different diameter and length for each three sites and their results were
presented.
In this study the result shows that the head deflection of a pile, lateral pile displacement,
distribution of bending moment, distribution of shear force along the pile length and lateral soil
resistance were influenced by pile diameter and site conditions. The analysis indicated that the
head deflection of the pile decreased with increase in pile diameter since its stiffness was increased
but remain constant with increase in length of pile since the embedded length of the pile is greater
than its critical length. Increase in pile diameter increased in ultimate lateral load capacity, bending
moment and shear force along the pile length and remain constant with increase in pile length. In
addition, the location and the thickness of the hard stratum near to the ground surface has a great
role in the response of laterally loaded piles.
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Keywords
Laterally Loaded Piles, Layered Soil, Finite Element